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Saturday, August 4, 2018

Buddhist philosophy

From Wikipedia, the free encyclopedia
The Buddhist Nalanda university and monastery was a major center of learning in India from the 5th century AD to c. 1200

Buddhist philosophy refers to the philosophical investigations and systems of inquiry that developed among various Buddhist schools in India following the death of the Buddha and later spread throughout Asia. Buddhism's main concern has always been freedom from dukkha (unease), and the path to that ultimate freedom consists in ethical action (karma), meditation and in direct insight (prajña) into the nature of "things as they truly are" (yathābhūtaṃ viditvā). Indian Buddhists sought this understanding not just from the revealed teachings of the Buddha, but through philosophical analysis and rational deliberation.[2] Buddhist thinkers in India and subsequently in East Asia have covered topics as varied as phenomenology, ethics, ontology, epistemology, logic and philosophy of time in their analysis of this path.

Early Buddhism was based on empirical evidence gained by the sense organs (ayatana)[3] and the Buddha seems to have retained a skeptical distance from certain metaphysical questions, refusing to answer them because they were not conducive to liberation but led instead to further speculation. A recurrent theme in Buddhist philosophy has been the reification of concepts, and the subsequent return to the Buddhist Middle Way.[4][5]

Particular points of Buddhist philosophy have often been the subject of disputes between different schools of Buddhism. These elaborations and disputes gave rise to various schools in early Buddhism of Abhidharma, and to the Mahayana traditions and schools of the prajnaparamita, Madhyamaka, Buddha-nature and Yogacara.

Philosophical orientation

Philosophy in India was aimed mainly at spiritual liberation and had soteriological goals. In his study of Mādhyamaka Buddhist philosophy in India, Peter Deller Santina writes:[6]
Attention must first of all be drawn to the fact that philosophical systems in India were seldom, if ever, purely speculative or descriptive. Virtually all the great philosophical systems of India: Sāṅkhya, Advaitavedānta, Mādhyamaka and so forth, were preeminently concerned with providing a means to liberation or salvation. It was a tacit assumption with these systems that if their philosophy were correctly understood and assimilated, an unconditioned state free of suffering and limitation could be achieved. [...] If this fact is overlooked, as often happens as a result of the propensity engendered by formal Occidental philosophy to consider the philosophical enterprise as a purely descriptive one, the real significance of Indian and Buddhist philosophy will be missed.
The goal of Buddhist philosophy is nirvana and to achieve this it needs to investigate the nature of the world. For the Indian Buddhist philosophers, the teachings of the Buddha were not meant to be taken on faith alone, but to be confirmed by logical analysis (pramana) of the world.[2] The early Buddhist texts mention that a person becomes a follower of the Buddha's teachings after having pondered them over with wisdom and the gradual training also requires that a disciple “investigate” (upaparikkhati) and “scrutinize” (tuleti) the teachings.[7] The Buddha also expected his disciples to approach him as a teacher in a critical fashion and scrutinize his actions and words, as shown in the Vīmaṃsaka Sutta.

The Buddha and early Buddhism

Gautama Buddha surrounded by followers, from an 18th-century Burmese watercolour

The Buddha

The Buddha (circa 5th century BC) was a north Indian sramana from Magadha. He cultivated various yogic techniques and ascetic practices and taught throughout north India, where his teachings took hold. These teachings are preserved in the Pali Nikayas and in the Agamas as well as in other surviving fragmentary textual collections. Dating these texts is difficult, and there is disagreement on how much of this material goes back to a single religious founder. While the focus of the Buddha's teachings are about attaining the highest good of nirvana, they also contain an analysis of the source of human suffering, the nature of personal identity, and the process of acquiring knowledge about the world.

The Middle Way

The Buddha defined his teaching as "the middle way". In the Dhammacakkappavattana Sutta, this is used to refer to the fact that his teachings steer a middle course between the extremes of asceticism and bodily denial (as practiced by the Jains and other sramanas) and sensual hedonism or indulgence. Many sramanas of the Buddha's time placed much emphasis on a denial of the body, using practices such as fasting, to liberate the mind from the body. The Buddha however, realized that the mind was embodied and causally dependent on the body, and therefore that a malnourished body did not allow the mind to be trained and developed.[8]

Basic teachings

Certain basic teachings appear in many places throughout these early texts, so older studies by various scholars conclude that the Buddha must at least have taught some of these key teachings:[9]
Critical studies by Schmithausen, Vetter, Bronkhorst, Gombrich and others have adjusted this list of basic teachings, and revealed a more nuanced genesis of the Buddhist teachings. According to Vetter, the description of the Buddhist path may initially have been as simple as the term "the middle way".[10] In time, this short description was elaborated, resulting in the description of the eightfold path.[10] Vetter argues that the eightfold path constitutes a body of practices which prepare one, and lead up to, the practice of dhyana.[11] According to Vetter and Bronkhorst, dhyāna constituted the original "liberating practice",[12][13][14] while discriminating insight into transiency as a separate path to liberation was a later development.[15][16]

According to Bronkhorst, the four truths may not have been formulated in earliest Buddhism, and did not serve in earliest Buddhism as a description of "liberating insight".[17] Lambert Schmithausen concluded that the four truths were a later development in early Buddhism.[13] Carol Anderson, following Lambert Schmithausen and K.R. Norman, notes that the four truths are missing in critical passages in the canon,[18] and states:
... the four noble truths were probably not part of the earliest strata of what came to be recognized as Buddhism, but that they emerged as a central teaching in a slightly later period that still preceded the final redactions of the various Buddhist canons.[19]
According to both Bronkhorst and Anderson, the four truths became a substitution for prajna, or "liberating insight", in the suttas[20][21] in those texts where "liberating insight" was preceded by the four jhanas.[22]

According to some scholars, the philosophical outlook of earliest Buddhism was primarily negative, in the sense that it focused on what doctrines to reject more than on what doctrines to accept.[a] Only knowledge that is useful in achieving enlightenment is valued. According to this theory, the cycle of philosophical upheavals that in part drove the diversification of Buddhism into its many schools and sects only began once Buddhists began attempting to make explicit the implicit philosophy of the Buddha and the early texts.

The noble truths and causation

The four noble truths or "truths of the noble one" are a central feature of the teachings and are put forth in the Dhammacakkappavattana Sutta. The first truth of Dukkha, often translated as suffering, is the inherent unsatisfactoriness of life. This unpleasantness is said to be not just physical pain, but also a kind of existential unease caused by the inevitable facts of our mortality and ultimately by the impermanence of all phenomena.[23] It also arises because of contact with unpleasant events, and due to not getting what one desires. The second truth is that this unease arises out of conditions, mainly 'craving' (tanha) and ignorance (avidya). The third truth is then the fact that if you let go of craving and remove ignorance through knowledge, dukkha ceases (nirodha). The fourth is the eightfold path which are eight practices that end suffering, they are: right view, right intention, right speech, right action, right livelihood, right effort, right mindfulness and right samadhi (mental unification, meditation). The goal taught by the Buddha, nirvana, literally means 'extinguishing' and signified "the complete extinguishing of greed, hatred, and delusion (i.e. ignorance), the forces which power samsara".[24] Nirvana also means that after an enlightened being's death, there is no further rebirth.

The working of the rising and ceasing of suffering is explained by dependent origination, the dynamic arising of events based on causal conditioning. The Buddha understood the world in procedural terms, not in terms of things or substances.[25] His theory posits a flux of events arising under certain conditions which are interconnected and dependent, such that the processes in question at no time, are considered to be static or independent. Craving, for example, is always dependent on, and caused by sensations. Sensations are always dependent on contact with our surroundings. Buddha's causal theory is simply descriptive: ‘This existing, that exists; this arising, that arises; this not existing, that does not exist; this ceasing, that ceases.’ This understanding of causation as 'impersonal lawlike causal ordering' is important because it shows how the processes that give rise to suffering work, and also how they can be reversed.[24]

The removal of suffering then, requires a deep understanding of the nature of reality (prajña). While philosophical analysis of arguments and concepts is clearly necessary to develop this understanding, it is not enough to remove our unskillful mental habits and deeply ingrained prejudices, which require meditation, paired with understanding.[26] According to the Buddha, we need to train the mind in meditation to be able to truly see the nature of reality, which is said to have the marks of suffering, impermanence and not-self. Understanding and meditation are said to work together to 'clearly see' (vipassana) the nature of human experience and this is said to lead to liberation.

Anatta

The Buddha argued that there is no permanent self, no 'essence of a person' or 'what makes me, me'. This means there is no part of a person which is unchanging and essential for continuity, it means that there is no individual "part of the person that accounts for the identity of that person over time".[27] This is in opposition to the Upanishadic concept of an unchanging ultimate self and any view of an eternal soul. The Buddha held that attachment to the appearance of a permanent self in this world of change is the cause of suffering, and the main obstacle to liberation.

The most widely used argument that the Buddha employed against the idea of an unchanging ego is an empiricist one, based on the observation of the five aggregates that make up a person and the fact that these are always changing. This argument can be put in this way:[28]
  1. All psycho-physical processes (skandhas) are impermanent.
  2. If there were a self it would be permanent.
IP [There is no more to the person than the five skandhas.]
∴ There is no self.
This argument requires the implied premise that the five aggregates are an exhaustive account of what makes up a person, or else the self could exist outside of these aggregates.[27]

This argument is famously expounded in the Anattalakkhana Sutta. According to this argument, the apparently fixed self is merely the result of identification with the temporary aggregates, the changing processes making up an individual human being. In this view a 'person' is only a convenient nominal designation on a certain grouping of processes and characteristics, an 'individual' is a conceptual construction overlaid upon a stream of experiences just like a chariot is merely a conventional designation for the parts of a chariot and how they are put together. The foundation of this argument is empiricist, for it is based on the fact that all we observe is subject to change, especially everything observed when looking inwardly in meditation.[29]

Another argument for 'non-self', the 'argument from lack of control'[30] and it is based on the fact that we often seek to change certain parts of ourselves, that the 'executive function' of the mind is that which finds certain things unsatisfactory and attempts to alter them. Furthermore, it is also based on the Indian 'Anti Reflexivity Principle' which states an entity cannot operate on or control itself (a knife can cut other things but not itself, a finger can point at other things but not at itself, etc.). This means then, that the self could never desire to change itself and could not do so, the Buddha uses this idea to attack the concept of self. This argument could be structured thus:[31]
  1. If the self existed it would be the part of the person that performs the executive function, the "controller."
  2. The self could never desire that it be changed (anti-reflexivity principle).
  3. Each of the five kinds of psycho-physical element is such that one can desire that it be changed.
IP [There is no more to the person than the five skandhas.]
∴ There is no self.
This argument then denies that there is one permanent "controller" in the person. Instead it views the person as a set of constantly changing processes which include volitional events seeking change and an awareness of that desire for change. According to Mark Siderits:

"What the Buddhist has in mind is that on one occasion one part of the person might perform the executive function, on another occasion another part might do so. This would make it possible for every part to be subject to control without there being any part that always fills the role of controller (and so is the self). On some occasions a given part might fall on the controller side, while on other occasions it might fall on the side of the controlled. This would explain how it's possible for us to seek to change any of the skandhas while there is nothing more to us than just those skandhas."[32]

As noted by K.R. Norman and Richard Gombrich, the Buddha extended his anatta critique to the Brahmanical belief expounded in the Brihadaranyaka Upanishad that the Self (Atman) was indeed the whole world, or Brahman.[33][34] This is shown by the Alagaddūpama-sutta, where the Buddha argues that an individual cannot experience the suffering of the entire world. He used the example of someone carrying off and burning grass and sticks from the Jeta grove and how a monk would not sense or consider themselves harmed by that action. In this example the Buddha is arguing that we do not have direct experience of the entire world, and hence the Self cannot be the whole world. [b] In this sutta (as well as in the Soattā Sutta) the Buddha outlines six wrong views about Self:
"There are six wrong views: An unwise, untrained person may think of the body, ‘This is mine, this is me, this is my self’; he may think that of feelings; of perceptions; of volitions; or of what has been seen, heard, thought, cognized, reached, sought or considered by the mind. The sixth is to identify the world and self, to believe: ‘At death I shall become permanent, eternal, unchanging, and so remain forever the same; and that is mine, that is me, that is my self.’ A wise and well-trained person sees that all these positions are wrong, and so he is not worried about something that does not exist."[33]
Furthermore, the Buddha argues that the world can be observed to be a cause of suffering (Brahman was held to be ultimately blissful) and that since we cannot control the world as we wish, the world cannot be the Self. The idea that "this cosmos is the self" is one of the views rejected by the Buddha [35] along with the related Monistic theory that held that "everything is a Oneness" (SN 12.48 Lokayatika Sutta).[36] The Buddha also held that understanding and seeing the truth of not-self led to un-attachment, and hence to the cessation of suffering, while ignorance about the true nature of personality led to further suffering.

Epistemology

All schools of Indian philosophy recognize various sets of valid justifications for knowledge, or pramāṇa and many see the Vedas as providing access to truth. The Buddha denied the authority of the Vedas, though like his contemporaries, he affirmed the soteriological importance of having a proper understanding of reality ('right view').[37] However, this understanding was not conceived primarily as metaphysical and cosmological knowledge, but as a knowledge into the arising and cessation of suffering in human experience.[38] Therefore, the Buddha's epistemic project is different than that of modern philosophy, it is primarily a solution to the fundamental human spiritual/existential problem.

The Buddha's epistemology has been compared to empiricism, in the sense that it was based on experience of the world through the senses.[39][40] The Buddha taught that empirical observation through the six sense fields (ayatanas) was the proper way of verifying any knowledge claims. Some suttas go further, stating that "the All", or everything that exists (sabbam), are these six sense spheres (SN 35.23, Sabba Sutta) [41] and that anyone who attempts to describe another "All" will be unable to do so because "it lies beyond range".[42] This sutta seems to indicate that for the Buddha, things in themselves or noumena, are beyond our epistemological reach (avisaya).[43]

Furthermore, in the Kalama sutta the Buddha tells a group of confused villagers that the only proper reason for one's beliefs is verification in one’s own personal experience (and the experience of the wise) and denies any verification which stems from personal authority, sacred tradition (anussava) or any kind of rationalism which constructs metaphysical theories (takka).[44] In the Tevijja Sutta (DN 13), the Buddha rejects the personal authority of Brahmins because none of them can prove they have had personal experience of Brahman. The Buddha also stressed that experience is the only criterion for verification of the truth in this passage from the Majjhima Nikaya (MN.I.265):
"Monks, do you only speak that which is known by yourselves seen by yourselves, found by yourselves?"
"Yes, we do, sir."
"Good, monks, That is how you have been instructed by me in this timeless doctrine which can be realized and verified, that leads to the goal and can be understood by those who are intelligent."
Furthermore, the Buddha's standard for personal verification was a pragmatic and salvific one, for the Buddha a belief counts as truth only if it leads to successful Buddhist practice (and hence, to the destruction of craving). In the "Discourse to Prince Abhaya" (MN.I.392–4) the Buddha states this pragmatic maxim by saying that a belief should only be accepted if it leads to wholesome consequences.[45] This tendency of the Buddha to see what is true as what was useful or 'what works' has been called by scholars such as Mrs Rhys Davids and Vallée-Poussin a form of Pragmatism. However, K. N. Jayatilleke argues the Buddha's epistemology can also be taken to be a form of correspondence theory (as per the 'Apannaka Sutta') with elements of Coherentism [48] and that for the Buddha, it is causally impossible for something which is false to lead to suffering and evil.

The Buddha discouraged his followers from indulging in intellectual disputation for its own sake, which is fruitless, and distracts one from the goal of awakening. Only philosophy and discussion which has pragmatic value for liberation from suffering is seen as important. According to the scriptures, during his lifetime the Buddha remained silent when asked several metaphysical questions which he regarded as the basis for "unwise reflection". These 'unanswered questions' (avyākata) regarded issues such as whether the universe is eternal or non-eternal (or whether it is finite or infinite), the unity or separation of the body and the self, the complete inexistence of a person after Nirvana and death, and others. The Buddha stated that thinking about these imponderable (Acinteyya) issues led to "a thicket of views, a wilderness of views, a contortion of views, a writhing of views, a fetter of views" (Aggi-Vacchagotta Sutta).

One explanation for this pragmatic suspension of judgment or epistemic Epoché is that such questions distract from activity that is practical to realizing enlightenment[49] and bring about the danger of substituting the experience of liberation by conceptual understanding of the doctrine or by religious faith. According to the Buddha, the Dharma is not an ultimate end in itself or an explanation of all metaphysical reality, but a pragmatic set of teachings. The Buddha used two parables to clarify this point, the 'Parable of the raft' and the Parable of the Poisoned Arrow.[50] The Dharma is a like a raft in the sense that it is only a pragmatic tool for attaining nirvana ("for the purpose of crossing over, not for the purpose of holding onto", MN 22) once one has done this, one can discard the raft. It is also like medicine, in that, the particulars of how one was injured by a poisoned arrow (i.e. metaphysics, etc.) do not matter in the act of removing and curing the arrow wound itself (removing suffering). In this sense the Buddha was often called 'the great physician' because his goal was to cure the human condition of suffering first and foremost, not to speculate about metaphysics.[51]

Having said this, it is still clear that resisting (even, refuting) a false or slanted doctrine can be useful to extricate the interlocutor, or oneself, from error; hence, to advance in the way of liberation. Witness the Buddha's confutation of several doctrines by Nigantha Nataputta and other purported sages which sometimes had large followings (e.g., Kula Sutta, Sankha Sutta, Brahmana Sutta). This shows that a virtuous and appropriate use of dialectics can take place. By implication, reasoning and argument shouldn't be disparaged by buddhists.

After the Buddha's death, some Buddhists such as Dharmakirti went on to use the sayings of the Buddha as sound evidence equal to perception and inference.[c]

Transcendence

Another possible reason why the Buddha refused to engage in metaphysics is that he saw ultimate reality and nirvana as devoid of sensory mediation and conception and therefore language itself is a priori inadequate to explain it.[52] Thus, the Buddha's silence does not indicate misology or disdain for philosophy. Rather, it indicates that he viewed the answers to these questions as not understandable by the unenlightened.[52] Dependent arising provides a framework for analysis of reality that is not based on metaphysical assumptions regarding existence or non-existence, but instead on imagining direct cognition of phenomena as they are presented to the mind in yogic meditation.

The Buddha of the earliest Buddhists texts describes Dharma (in the sense of "truth") as "beyond reasoning" or "transcending logic", in the sense that reasoning is a subjectively introduced aspect of the way unenlightened humans perceive things, and the conceptual framework which underpins their cognitive process, rather than a feature of things as they really are. Going "beyond reasoning" means in this context penetrating the nature of reasoning from the inside, and removing the causes for experiencing any future stress as a result of it, rather than functioning outside the system as a whole.[53]

Meta-ethics

The Buddha's ethics are based on the soteriological need to eliminate suffering and on the premise of the law of karma. Buddhist ethics have been termed eudaimonic (with their goal being well-being) and also compared to virtue ethics (this approach began with Damien Keown).[54] Keown writes that Buddhist Nirvana is analogous to the Aristotelian Eudaimonia, and that Buddhist moral acts and virtues derive their value from how they lead us to or act as an aspect of the nirvanic life.
The Buddha outlined five precepts (no killing, stealing, sexual misconduct, lying, or drinking alcohol) which were to be followed by his disciples, lay and monastic. There are various reasons the Buddha gave as to why someone should be ethical.

First, the universe is structured in such a way that if someone intentionally commits a misdeed, a bad karmic fruit will be the result (and vice versa). Hence, from a pragmatic point of view, it is best to abstain from these negative actions which bring forth negative results. However the important word here is intentionally, for the Buddha, karma is nothing else but intention/volition, and hence unintentionally harming someone does not create bad karmic results. Unlike the Jains who believed that karma was a quasi-physical element, for the Buddha karma was a volitional mental event, what Richard Gombrich calls ‘an ethicised consciousness’.[55]

This idea leads into the second moral justification of the Buddha; intentionally performing negative actions reinforces and propagates mental defilements which keep persons bound to the cycle of rebirth and interfere with the process of liberation, and hence intentionally performing good karmic actions is participating in mental purification which leads to nirvana, the highest happiness. This perspective sees immoral acts as unskillful (akusala) in our quest for happiness, and hence it is pragmatic to do good.

The third meta-ethical consideration takes the view of not-self and our natural desire to end our suffering to its logical conclusion. Since there is no self, there is no reason to prefer our own welfare over that of others because there is no ultimate grounding for the differentiation of "my" suffering and someone else's. Instead an enlightened person would just work to end suffering tout court, without thinking of the conventional concept of persons.[56] According to this argument, anyone who is selfish does so out of ignorance of the true nature of personal identity and irrationality.

Abhidharma

Buddhaghosa (c. 5th century), the most important Abhidharma scholar of Theravāda Buddhism, presenting three copies of the Visuddhimagga.[57]

The main Indian Buddhist philosophical schools practiced a form of analysis termed Abhidharma which sought to systematize the teachings of the early Buddhist discourses (sutras). Abhidharma analysis broke down human experience into momentary phenomenal events or occurrences called "dharmas". Dharmas are impermanent and dependent on other causal factors, they arise and pass as part of a web of other interconnected dharmas, and are never found alone. The Abhidharmic schools held that the teachings of the Buddha in the sutras were merely conventional, while the Abhidharma analysis was ultimate truth (paramattha sacca), the way things really are when seen by an enlightened being. The Abhidharmic project has been likened as a form of phenomenology or process philosophy.[58][59] Abhidharma philosophers not only outlined what they believed to be an exhaustive listing of dharmas, or phenomenal events, but also the causal relations between them. In the Abhidharmic analysis, the only thing which is ultimately real is the interplay of dharmas in a causal stream, everything else is merely conceptual (paññatti) and nominal.

This view has been termed "mereological reductionism" by Mark Siderits because it holds that only impartite entities are real, not wholes.[60] Abhidharmikas such as Vasubandhu argued that conventional things (tables, persons, etc.), "disappear under analysis" and that this analysis reveals only a causal stream of phenomenal events and their relations. The mainstream Abhidharmikas defended this view against their main Hindu rivals, the Nyaya school, who were substance theorists and posited the existence of universals.[61] Some Abhidharmikas such as the Prajñaptivāda were also strict nominalists, and held that all things - even dharmas - were merely conceptual.

Competing Abhidharma schools

An important Abhidhamma work from the Theravāda school is the Kathāvatthu ("Points of controversy"), by the scholar-monk Moggaliputta-Tissa (ca.327–247 BCE). This text is important because it attempts to refute several philosophical views which had developed after the death of the Buddha, especially the theory that 'all exists' (sarvāstivāda), the theory of momentariness (khāṇavāda) and the personalist view (pudgalavada)[62] These were the major philosophical theories which divided the Buddhist Abhidharma schools in India. After being brought to Sri Lanka in the first century BCE, the Theravada Pali language Abhidhamma tradition was heavily influenced by the works of Buddhaghosa (4-5th century AD), the most important philosopher and commentator of the Theravada school. The Theravada philosophical enterprise was mostly carried out in the genre of Atthakatha, commentaries (as well as sub-commentaries) on the Pali Abhidhamma, but also included short summaries and compendiums.

The Sarvāstivāda was one of the major Buddhist philosophical schools in India, and they were so named because of their belief that dharmas exist in all three times: past, present and future. Though the Sarvāstivāda Abhidharma system began as a mere categorization of mental events, their philosophers and exegetes such as Dharmatrata and Katyāyāniputra (the compiler of the Mahavibhasa, a central text of the school) eventually refined this system into a robust realism, which also included a type of essentialism. This realism was based on a quality of dharmas, which was called svabhava or 'intrinsic existence'.[63] Svabhava is a sort of essence, though it is not a completely independent essence, since all dharmas were said to be causally dependent. The Sarvāstivāda system extended this realism across time, effectively positing a type of eternalism with regards to time, hence the name of their school means "the view that everything exists".[62]

Other Buddhist schools such as the Prajñaptivadins ('nominalists'), the Purvasailas and the Vainasikas refused to accept the concept of svabhava.[64] The main topic of the Tattvasiddhi Śāstra by Harivarman (3-4th century AD), an influential Abhidharma text, is the emptiness (shunyata) of dharmas.[65]

The Theravādins and other schools such as the Sautrāntikas attacked the realism of the Sarvāstivādins, especially their theory of time. A major figure in this argument was the scholar Vasubandhu, an ex-Sarvāstivādin, who critiqued the theory of all exists and argued for philosophical presentism in his comprehensive treatise, the Abhidharmakosa. This work is the major Abhidharma text used in Tibetan and East Asian Buddhism today. The Theravāda also holds that dharmas only exist in the present, and are thus also presentists.[66] The Theravādin presentation of Abhidharma is also not as concerned with ontology as the Sarvāstivādin view, but is more of a phenomenology[58] and hence the concept of svabhava for the Theravādins is more of a certain characteristic or dependent feature of a dharma, than any sort of essence or metaphysical grounding. According to Y Karunadasa:
In the Pali tradition it is only for the sake of definition and description that each dhamma is postulated as if it were a separate entity; but in reality it is by no means a solitary phenomenon having an existence of its own...If this Abhidhammic view of existence, as seen from its doctrine of dhammas, cannot be interpreted as a radical pluralism, neither can it be interpreted as an out-and-out monism. For what are called dhammas -- the component factors of the universe, both within us and outside us -- are not fractions of an absolute unity but a multiplicity of co-ordinate factors. They are not reducible to, nor do they emerge from, a single reality, the fundamental postulate of monistic metaphysics. If they are to be interpreted as phenomena, this should be done with the proviso that they are phenomena with no corresponding noumena, no hidden underlying ground. For they are not manifestations of some mysterious metaphysical substratum, but processes taking place due to the interplay of a multitude of conditions.[67]
An important theory held by some Sarvāstivādins, Theravādins and Sautrāntikas was the theory of "momentariness" (Skt., kṣāṇavāda, Pali, khāṇavāda). This theory held that dhammas only last for a minute moment (ksana) after they arise. The Sarvāstivādins saw these 'moments' in an atomistic way, as the smallest length of time possible (they also developed a material atomism). Reconciling this theory with their eternalism regarding time was a major philosophical project of the Sarvāstivāda.[68] The Theravādins initially rejected this theory, as evidenced by the Khaṇikakathā of the Kathavatthu which attempts to refute the doctrine that "all phenomena (dhamma) are as momentary as a single mental entity."[69] However momentariness was later adopted by the Sri Lankan Theravādins, and it is possible that it was first introduced by the scholar Buddhagosa.[70]

All Abhidharma schools also developed complex theories of causation and conditionality to explain how dharmas interacted with each other. Another major philosophical project of the Abhidharma schools was the explanation of perception. Some schools such as the Sarvastivadins explained perception as a type of phenomenalist realism while others such as the Sautrantikas preferred representationalism and held that we only perceive objects indirectly.[71] The major argument used for this view by the Sautrāntikas was the "time lag argument." According to Mark Siderits: "The basic idea behind the argument is that since there is always a tiny gap between when the sense comes in contact with the external object and when there is sensory awareness, what we are aware of can't be the external object that the senses were in contact with, since it no longer exists."[72] This is related to the theory of extreme momentariness.

One major philosophical view which was rejected by all the schools mentioned above was the view held by the Pudgalavadin or 'personalist' schools. They seemed to have held that there was a sort of 'personhood' in some ultimately real sense which was not reducible to the five aggregates.[66] This controversial claim was in contrast to the other Buddhists of the time who held that a personality was a mere conceptual construction (prajñapti) and only conventionally real.

Indian Mahāyāna philosophy

From about the 1st century BCE, a new textual tradition began to arise in Indian Buddhist thought called Mahāyāna (Great Vehicle), which would slowly come to dominate Indian Buddhist philosophy. Buddhist philosophy thrived in large monastery-university complexes such as Nalanda and Vikramasila, which became centres of learning in North India. Mahāyāna philosophers continued the philosophical projects of Abhidharma while at the same time critiquing them and introducing new concepts and ideas. Since the Mahāyāna held to the pragmatic concept of truth[73] which states that doctrines are regarded as conditionally "true" in the sense of being spiritually beneficial, the new theories and practices were seen as 'skillful means' (Upaya). The Mahayana also promoted the Bodhisattva ideal, which included an attitude of compassion for all sentient beings. The Bodhisattva is someone who chooses to remain in samsara (the cycle of birth and death) to benefit all other beings who are suffering.

Major Mahayana philosophical schools and traditions include the Prajnaparamita, Madhyamaka, Tathagatagarbha, the Epistemological school of Dignaga, Yogācāra, Huayan, Tiantai and the Chan/Zen schools.

Prajñāpāramitā and Madhyamaka

Nagarjuna, protected by the Nagas snake spirits who are said to be the guardians of the Prajnaparamita sutras.

The earliest Prajñāpāramitā-sutras (1st century BC) emphasize the emptiness (Shunyata) of phenomena or dhammas. The 'perfection of insight' (Prajñāpāramitā) is said to be true knowledge of the nature of ultimate reality, which is illusory and empty of essence. The Diamond Sutra states that:
All conditioned phenomena

Are like a dream, an illusion, a bubble, a shadow,
Like dew or a flash of lightning;
Thus we shall perceive them.”[74]
The Heart Sutra famously affirms the emptiness or voidness (shunyata) of phenomena:
"Oh, Sariputra, Form Does not Differ From the Void,

And the Void Does Not Differ From Form.
Form is Void and Void is Form;
The Same is True For Feelings,
Perceptions, Volitions and Consciousness".[75]
The Prajñāpāramitā teachings are associated with the work of the Buddhist philosopher Nāgārjuna (c. AD 150 – c. 250) and the Madhyamaka (Middle way) school. Nāgārjuna was one of the most influential Indian Buddhist thinkers; he gave the classical arguments for the empty nature of phenomena and attacked the Sarvāstivāda and Pudgalavada schools' essentialism in his magnum opus, The Fundamental Verses on the Middle Way (Mūlamadhyamakakārikā).[76] In the Mūlamadhyamakakārikā, Nagarjuna relies on reductio ad absurdum arguments to refute various theories which assume an inherent essence or "own being" (svabhava). In this work, he covers topics such as causation, motion, and the sense faculties.[77]

Nagarjuna asserted a direct connection between, even identity of, dependent origination, selflessness (anatta), and emptiness (śūnyatā). He pointed out that implicit in the early Buddhist concept of dependent origination is the lack of any substantial being (anatta) underlying the participants in origination, so that they have no independent existence, a state identified as emptiness (śūnyatā), or emptiness of a nature or essence (svabhāva sunyam).

Later philosophers of the Madhyamaka school built upon Nagarjuna's analysis and defended Madhyamaka against their opponents. These included Āryadeva (3rd century CE), Nāgārjuna's pupil; Candrakīrti (600–c. 650), who wrote an important commentary on the Mūlamadhyamakakārikā; and Shantideva (8th century). Buddhapālita (470–550) has been understood as the originator of the 'prāsaṅgika' approach which is based on critiquing essentialism only through reductio ad absurdum arguments. He was criticized by Bhāvaviveka (c. 500 – c. 578), who argued for the use of syllogisms "to set one's own doctrinal stance". These two approaches were later termed the Prāsaṅgika and the Svātantrika approaches to Madhyamaka by Tibetan philosophers and commentators.

Influenced by the work of Dignaga, Bhāvaviveka's Madhyamika philosophy makes use of Buddhist epistemology. Candrakīrti on the other hand, critiqued Bhāvaviveka's adoption of the epistemological (pramana) tradition on the grounds that it contained a subtle essentialism. He quotes Nagarjuna's famous statement in the Vigrahavyavartani which says "I have no thesis" for his rejection of positive epistemic Madhyamaka statements.[78] Candrakīrti held that a true Madhyamika could only use "consequence" (prasanga) in which one points out the inconsistencies of their opponents position without asserting an "autonomous inference" (svatantra), for no such inference can be ultimately true from the point of view of Madhyamaka.

In China, the Madhyamaka school (known as Sānlùn) was founded by Kumārajīva (344–413 CE) who translated the works of Nagarjuna to Chinese. Other Chinese Madhymakas include Kumārajīva 's pupil Sengzhao, Jizang (549–623), who wrote over 50 works on Madhyamaka and Hyegwan, a Korean monk who brought Madhyamaka teachings to Japan.

Yogācāra

Vasubandhu wrote in defense of Vijñapti-matra (appearance only) as well as writing a massive work on Abhidharma, the Abhidharmakosa.

The Yogācāra school (Yoga practice) was a Buddhist philosophical tradition which arose in between the 2nd century CE and the 4th century CE and is associated with the philosophers Asanga and Vasubandhu[79] and with various sutras such as the Sandhinirmocana Sutra and the Lankavatara Sutra. The central feature of Yogācāra thought is the concept of Vijñapti-mātra, often translated as "impressions only" or "appearance only" and this has been interpreted as a form of Idealism or as a form of Phenomenology. Other names for the Yogacara school are 'Vijñanavada' (the doctrine of consciousness) and 'Cittamatra' (mind-only).[79]

Yogacara thinkers like Vasubandhu argued against the existence of external objects by pointing out that we only ever have access to our own mental impressions, and hence our inference of the existence of external objects is based on faulty logic. Vasubandhu's Vijnaptimatratasiddhi, or 'The Proof that There Are Only Impressions' (20 verses) begins thus:

"I. This [world] is nothing but impressions, since it manifests itself as an unreal object, Just like the case of those with cataracts seeing unreal hairs in the moon and the like." [80]

According to Vasubandhu then, all our experiences are like seeing hairs on the moon when we have cataracts, that is, we project our mental images into something "out there" when there are no such things. Vasubandhu then goes on to use the dream argument to argue that mental impressions do not require external objects to (1) seem to be spatio-temporally located, (2) to seem to have an inter-subjective quality, and (3) to seem to operate by causal laws.[80] The fact that purely mental events can have causal efficacy and be intersubjective is proved by the event of a wet dream and by the mass or shared hallucinations created by the karma of certain types of beings.[81]

After having argued that impressions only is a theory which can explain our everyday experience, Vasubandhu then appeals to parsimony - since we do not need the concept of external objects to explain reality, then we can do away with those superfluous concepts altogether as they are most likely just mentally superimposed on our concepts of reality by the mind.[82] Inter-subjective reality for Vasubandhu is then the causal interaction between various mental streams and their karma, and does not include any external physical objects. The soteriological importance of this theory is that by removing the concept of an external world, it also weakens the 'internal' sense of self as observer which is supposed to be separate from the external world. To dissolve the dualism of inner and outer is also to dissolve the sense of self and other. The later Yogacara commentator Sthiramati explains this thus:

"There is a grasper if there is something to be grasped, but not in the absence of what is to be grasped. Where there is no thing to be grasped, the absence of a grasper also follows, there is not just the absence of the thing to be grasped. Thus there arises the extra-mundane non-conceptual cognition that is alike without object and without cognizer."[83]

Vasubandhu also attacked the realist theories of Buddhist atomism and the Abhidharma theory of svabhava. He argued that atoms as conceived by the atomists (un-divisible entities) would not be able to come together to form larger aggregate entities, and hence that they were illogical concepts.[82]

Later Yogacara thinkers include Dharmapala of Nalanda, Sthiramati, Chandragomin (who debated Candrakirti), and Śīlabhadra. Yogacarins such as Paramartha and Guṇabhadra brought the school to China and translated Yogacara works there, where it is known as Wéishí-zōng or Fǎxiàng-zōng. As an important contribution to East Asian Yogācāra is Xuanzang's Cheng Weishi Lun, or "Discourse on the Establishment of Consciousness Only.

Yogācāra-Mādhyamika synthesis

Jñānagarbha (8th century) and his student Śāntarakṣita (725–788) brought together Yogacara, Madhyamaka and the Dignaga school of epistemology into a philosophical synthesis known as the Yogācāra-Svatantrika-Mādhyamika. Śāntarakṣita was also instrumental in the introduction of Buddhism and the Sarvastivadin monastic ordination lineage to Tibet which was conducted at Samye. Śāntarakṣita's disciples included Haribhadra and Kamalaśīla. This philosophical tradition is influential in Tibetan Buddhist thought.

Tathagatagarbha

The tathāgathagarbha sutras, in a departure from mainstream Buddhist language, insist that the potential for awakening is inherent to every sentient being. They marked a shift from a largely apophatic (negative) philosophical trend within Buddhism to a decidedly more cataphatic (positive) modus.
Prior to the period of these scriptures, Mahāyāna metaphysics had been dominated by teachings on emptiness in the form of Madhyamaka philosophy. The language used by this approach is primarily negative, and the tathāgatagarbha genre of sutras can be seen as an attempt to state orthodox Buddhist teachings of dependent origination using positive language instead, to prevent people from being turned away from Buddhism by a false impression of nihilism.

In these sutras the perfection of the wisdom of not-self is stated to be the true self; the ultimate goal of the path is then characterized using a range of positive language that had been used previously in Indian philosophy by essentialist philosophers, but which was now transmuted into a new Buddhist vocabulary to describe a being who has successfully completed the Buddhist path.[84]

The word "self" (atman) is used in a way idiosyncratic to these sutras; the "true self" is described as the perfection of the wisdom of not-self in the Buddha-Nature Treatise, for example.[85] Language that had previously been used by essentialist non-Buddhist philosophers was now adopted, with new definitions, by Buddhists to promote orthodox teachings.

The tathāgatagarbha does not, according to some scholars, represent a substantial self; rather, it is a positive language expression of emptiness and represents the potentiality to realize Buddhahood through Buddhist practices. In this interpretation, the intention of the teaching of tathāgatagarbha is soteriological rather than theoretical.[85][86]

The tathāgathagarbha, the Theravāda doctrine of bhavaṅga, and the Yogācāra store consciousness were all identified at some point with the luminous mind of the Nikāyas.

In the Mahayana Mahaparinirvana Sutra, the Buddha insists that while pondering upon Dharma is vital, one must then relinquish fixation on words and letters, as these are utterly divorced from liberation and the Buddha-nature.

The Dignāga school of Pramāṇa

Dignāga in formal debating stance

Dignāga (c. 480–540) and Dharmakīrti (c. 6-7th century) were Buddhist philosophers who developed a system of epistemology (Pramāṇa) and logic in their debates with the Brahminical philosophers in order to defend Buddhist doctrine. This tradition is called “those who follow reasoning” (Tibetan: rigs pa rjes su ‘brang ba); in modern literature it is sometimes known by the Sanskrit 'pramāṇavāda', or “the Epistemological School.”[87] They were associated with the Yogacara and Sautrantika schools, and defended theories held by both of these schools.[88] Dignaga's influence was profound and led to an “epistemological turn” among all Buddhist and also all Sanskrit philosophers in India after his death. In the centuries following Dignaga's work, Sanskrit philosophers became much more focused on defending all of their propositions with fully developed theories of knowledge.[89]

The "School of Dignāga" includes later philosophers and commentators like Santabhadra, Dharmottara (8th century), Jñanasrimitra (975–1025), Ratnakīrti (11th century) and Samkarananda. The epistemology they developed defends the view that there are only two 'instruments of knowledge' or 'valid cognitions' (pramāṇa); "perception" (pratyaksa) and "inference" (anumāṇa). Perception is a non-conceptual awareness of particulars which is bound by causality, while inference is reasonable, linguistic and conceptual.[90]

These Buddhist philosophers argued in favor of the theory of momentariness, the Yogacara "awareness only" view, the reality of particulars (svalakṣaṇa), atomism, nominalism and the self-reflexive nature of consciousness (svasaṃvedana). They attacked Hindu theories of God, universals, the authority of the Vedas, and the existence of a permanent soul (atman).

Tantra

The tradition associated with a group of texts known as the Buddhist Tantras, known as Vajrayana, developed by the eighth century in North India. By this time Tantra was a key feature of Indian Buddhism, and Indian Tantric scholars developed philosophical defenses, hermeneutics and explanations of the Buddhist tantric systems, especially through commentaries on key tantras such as the Guhyasamāja Tantra and the Guhyagarbha Tantra.

While the view of the Vajrayana was based on Madhyamaka, Yogacara and Buddha-nature theories,[91][92] it saw itself as being a faster vehicle to liberation containing many skillful methods (upaya) of tantric ritual. The need for an explication and defense of the Tantras arose out of the unusual nature of the rituals associated with them, which included the use of secret mantras, alcohol, sexual yoga, complex visualizations of mandalas filled with wrathful deities and other practices and injunctions which were discordant with or at least novel in comparison to traditional Buddhist thought. The Guhyasamāja Tantra for example, states "you should kill living beings, speak lying words, take things that are not given and have sex with many women".[93] Other features of tantra included a focus on the physical body as the means to liberation and a reaffirmation of feminine elements, feminine deities and sexuality.[94]

The defense of these practices is based on the theory of transformation which states that negative mental factors and physical actions can be cultivated and transformed in a ritual setting, the Hevajra tantra states:
Those things by which evil men are bound, others turn into means and gain thereby release from the bonds of existence. By passion the world is bound, by passion too it is released, but by heretical Buddhists this practice of reversals is not known.[95]
Another hermeneutic of Buddhist Tantric commentaries such as the Vimalaprabha of Pundarika (a commentary on the Kalacakra Tantra) is one of interpreting taboo or unethical statements in the Tantras as metaphorical statements about tantric practice. For example, in the Vimalaprabha, "killing living beings" refers to stopping the prana at the top of the head. In the Tantric Candrakirti's Pradipoddyotana, a commentary to the Guhyasamaja Tantra, killing living beings is glossed as "making them void" by means of a "special samadhi" which according to Bus-ton is associated with completion stage tantric practice.[96]

Douglas Duckworth notes that Vajrayana philosophical outlook is one of embodiment, which sees the physical and cosmological body as already containing wisdom and divinity. Liberation (nirvana) and Buddhahood is not seen as something outside or an event in the future, but as immanently present and accessible right now through unique tantric practices like deity yoga, and hence Vajrayana is also called the "resultant vehicle".[97] Duckworth names the philosophical view of Vajrayana as a form of pantheism, by which he means the belief that every existing entity is in some sense divine and that all things express some form of unity.[98]

Major Indian Tantric Buddhist philosophers such as Buddhaguhya, Padmavajra (author of the Guhyasiddhi), Nagarjuna (7th century disciple of Saraha), Indrabhuti (author of the Jñānasiddhi), Anangavajra, Dombiheruka, Durjayacandra, Ratnākaraśānti and Abhayakaragupta wrote tantric texts and commentaries systematizing the tradition. Others such as Vajrabodhi and Śubhakarasiṃha brought Tantra to Tang China (716 to 720), tantric philosophy continued to be developed in Chinese and Japanese by thinkers such as Yi Xing and Kūkai. In Tibet, philosophers such as Sakya Pandita (1182-28 – 1251), Longchenpa (1308–1364) and Tsongkhapa (1357–1419) continued the tradition of Buddhist Tantric philosophy in Tibetan.

Tibetan Buddhist philosophy

Tibetan Buddhist philosophy is mainly a continuation and refinement of the Indian traditions of Madhyamaka, Yogacara and the Dignaga-Dharmakīrti school of epistemology or "reliable cognition" (Sanskrit: Pramana, Tib. tshad ma). The initial efforts of Śāntarakṣita and Kamalaśīla brought their eclectic scholarly tradition to Tibet. Other influences include Buddhist Tantras and the Buddha nature texts.

The initial work of early Tibetan Buddhist philosophers was in translation of classical Indian philosophical treatises and the writing of commentaries, this initial period is from the 8th to the 10th century. Early Tibetan commentator philosophers were heavily influenced by the work of Dharmakirti and these include Ngok Lo-dza-wa (1059-1109) and Cha-ba (1182-1251). Their works are now lost.[101] The 12th and 13th centuries saw the translation of the works of Chandrakirti, the promulgation of his views in Tibet by scholars such as Patsab Nyima Drakpa, Kanakavarman[102] and Jayananda (12th century) and the development of the Tibetan debate between the prasangika and svatantrika views which continues to this day among Tibetan Buddhist schools.[103] The main disagreement between these views is the use of reasoned argument. For Śāntarakṣita, Kamalaśīla and their defenders, reason is useful is establishing arguments that lead one to a correct understanding of emptiness, then, through the use of meditation, one can reach non-conceptual gnosis that does not rely on reason. For Chandrakirti however, this is wrong, because meditation on emptiness cannot possibly involve any object. Reason's role here is to negate any essence or essentialist views, and then eventually negate itself along with any Conceptual proliferation.[104]

There are various Tibetan Buddhist schools or monastic orders. According to Georges B.J. Dreyfus, within Tibetan thought, the Sakya school holds a mostly anti-realist philosophical position, while the Gelug school tends to defend a form of realism. The Kagyu and Nyingma schools also tend to follow Sakya anti-realism (with some differences).[105]

Shengtong and Buddha nature

The 14th century saw increasing interest in the Buddha nature texts and doctrines. This can be seen in the work of the third Kagyu Karmapa Rangjung Dorje (1284-1339), especially his treatise "Profound Inner Meaning".[106] This treatise describes ultimate nature or suchness as Buddha nature which is the basis for nirvana and samsara, radiant in nature and empty in essence, surpassing thought.[106]
Dolpopa (Dol-bo-ba, 1292–1361), founder of the Jonang school, developed a view called shentong (Wylie: gzhan stong) (other empty), which is closely tied to Yogacara and Buddha-nature theories. This view holds that the qualities of Buddhahood or Buddha nature are already present in the mind, and that it is empty of all conventional reality which occludes its own nature as Buddhahood or Dharmakaya. According to Dolpopa all beings are said to have Buddha nature which is real, unchanging, permanent, non-conditioned, eternal, blissful and compassionate. Dolpopa's shentong view taught that ultimate reality was truly a "Great Self" or "Supreme Self" referring to works such as the Mahāyāna Mahāparinirvāṇa Sūtra, the Aṅgulimālīya Sūtra and the Śrīmālādevī Siṃhanāda Sūtra.[107] This view had an influence on philosophers of other schools, such as Nyingma and Kagyu thinkers and was also widely criticized in some circles as being similar to the Hindu notions of Atman.[108] The Shentong philosophy was also expounded in Tibet and Mongolia by the later Jonang scholar Tāranātha (1575–1634).

In the late 17th century the Jonang order and its teachings came under attack by the 5th Dalai Lama, who converted the majority of their monasteries in Tibet to the Gelug order, although several survived in secret.[109]

Gelug

Tsongkapa, 15th-century painting, Rubin Museum of Art

Je Tsongkhapa (Dzong-ka-ba) (1357–1419) founded the Gelug school of Tibetan Buddhism which came to dominate the country through the office of the Dalai Lama and is the major defender of the Prasaṅgika Madhyamaka view, his work is influenced by the philosophy of Candrakirti and Dharmakirti. Tsongkhapa's magnum opus is The Ocean of Reasoning, a Commentary on Nagarjuna’s Mulamadhyamakakarika. Gelug philosophy is based upon study of Madhyamaka texts and Tsongkhapa's works as well as formal debate (rtsod pa).

Tsongkhapa defended Prasangika Madhyamaka as the highest view and critiqued the Svatantrika. Tsongkhapa argued that because the Svatantrika conventionally establish things by their own characteristics, they fail to completely understand the emptiness of phenomena and hence do not achieve the same realization.[110] Drawing on Chandrakirti, Tsongkhapa rejected the Yogacara teachings, even as a provisional stepping point to the Madhyamaka view.[104] Tsongkhapa was also critical of the Shengtong view of Dolpopa, which he saw as dangerously absolutist and hence outside the middle way. Tsongkhapa identified two major flaws in interpretations of Madhyamika, under-negation (of svabhava or own essence) which could lead to Absolutism and over-negation which could lead to Nihilism. Tsongkhapa's solution to this dilemma was the promotion of the use of inferential reasoning only within the conventional realm of the two truths framework, allowing for the use of reason for ethics, conventional monastic rules and promoting a conventional epistemic realism [111] while holding that from the view of ultimate truth (paramarthika satya), all things (including Buddha nature and Nirvana) are empty of inherent existence (svabhava) and true enlightenment is this realization of emptiness.

Sakya scholars such as Rongtön and Gorampa disagreed with Tsongkhapa, and argued that the prasangika svatantrika distinction was merely pedagogical. Gorampa also critiqued Tsongkhapa's realism, arguing that the structures which allow an empty object to be presented as conventionally real eventually dissolve under analysis and are thus unstructured and non-conceptual (spros bral). Tsongkhapa's students Gyel-tsap, Kay-drup, and Ge-dun-drup set forth an epistemological realism against the Sakya scholars' anti-realism.

Sakya

Sakya Pandita (1182–1251) was a 13th-century head of the Sakya school and ruler of Tibet. He was also one of the most important Buddhist philosophers in the Tibetan tradition, writing works on logic and epistemology and promoting Dharmakirti's Pramanavarttika (Commentary on Valid Cognition) as central to scholastic study. Sakya Pandita's 'Treasury of Logic on Valid Cognition' (Tshad ma rigs pa'i gter) set forth the classic Sakya epistemic anti-realist position, arguing that concepts such as universals are not known through valid cognition and hence are not real objects of knowledge.[105] Sakya Pandita was also critical of theories of sudden enlightenment which was held by some teachers of the "Chinese Great Perfection" in Tibet.

Later Sakyas such as Gorampa (1429–1489) and Sakya Chokden (1428–1507) would develop and defend Sakya anti-realism, and they are seen as the major interpreters and critics of Sakya Pandita's philosophy. Sakya Chokden also critiqued Tsongkhapa's interpretation of Madhyamaka and Dolpopa's Shentong. In his Definite ascertainment of the middle way, Chokden criticized Tsongkhapa's view as being too logo-centric and still caught up in conceptualization about the ultimate reality which is beyond language.[112] Sakya Chokden's philosophy attempted to reconcile the views of the Yogacara and Madhyamaka, seeing them both as valid and complementary perspectives on ultimate truth. Madhyamaka is seen by Chokden as removing the fault of taking the unreal as being real, and Yogacara removes the fault of the denial of Reality.[113] Likewise, the Shentong and Rangtong views are seen as complementary by Sakya Chokden; Rangtong negation is effective in cutting through all clinging to wrong views and conceptual rectification while Shentong is more amenable for describing and enhancing meditative experience and realization.[114] Therefore, for Sakya Chokden, the same realization of ultimate reality can be accessed and described in two different but compatible ways.

Nyingma and Rimé

Jamgon Ju Mipham Gyatso.

The Nyingma school is strongly influenced by the view of Dzogchen (Great Perfection) and the Dzogchen Tantric literature. Longchenpa (1308–1364) was a major philosopher of the Nyingma school and wrote an extensive number of works on the Tibetan practice of Dzogchen and on Buddhist Tantra. These include the Seven Treasures, the Trilogy of Natural Ease, and his Trilogy of Dispelling Darkness. Longchenpa's works provide a philosophical understanding of Dzogchen, a defense of Dzogchen in light of the sutras, as well as practical instructions.[115] For Longchenpa, the ground of reality is luminous clarity, rigpa, or Buddha nature and this ground is also the bridge between sutra and tantra.[116] Longchenpa's philosophy sought to establish the positive aspects of Buddha nature thought against the totally negative theology of Madhyamika without straying into the absolutism of Dolpopa. For Longchenpa, the basis for Dzogchen and Tantric practice in Vajrayana is the "Ground" (gzhi), the immanent Buddha nature, "the primordially luminous reality that is unconditioned and spontaneously present" which is "free from all elaborated extremes".[117]

The 19th century saw the rise of the Rimé movement (non-sectarian, unbiased) which sought to push back against the politically dominant Gelug school's criticisms of the Sakya, Kagyu, Nyingma and Bon philosophical views and develop a more eclectic or universal system of textual study. Jamyang Khyentse Wangpo (1820-1892) and Jamgön Kongtrül (1813-1899) were the founders of Rimé. The Rimé movement came to prominence at a point in Tibetan history when the religious climate had become partisan.[118] The aim of the movement was "a push towards a middle ground where the various views and styles of the different traditions were appreciated for their individual contributions rather than being refuted, marginalized, or banned."[118] Philosophically, Jamgön Kongtrül defended Shentong as being compatible with Madhyamaka while another Rimé scholar Jamgon Ju Mipham Gyatso (1846–1912) criticized Tsongkhapa from a Nyingma perspective. Mipham argued that the view of the middle way is Unity (zung 'jug), meaning that from the ultimate perspective the duality of sentient beings and Buddhas is also dissolved. Mipham also affirmed the view of rangtong (self emptiness).[119] The later Nyingma scholar Botrul (1894–1959) classified the major Tibetan Madhyamaka positions as shentong (other emptiness), Nyingma rangtong (self emptiness) and Gelug bdentong (emptiness of true existence). The main difference between them is their "object of negation"; shengtong states that inauthentic experience is empty, rangtong negates any conceptual reference and bdentong negates any true existence.[120]

The 14th Dalai Lama was also influenced by this eclectic approach. Having studied under teachers from all major Tibetan Buddhist schools, his philosophical position tends to be that the different perspectives on emptiness are complementary:
There is a tradition of making a distinction between two different perspectives on the nature of emptiness: one is when emptiness is presented within a philosophical analysis of the ultimate reality of things, in which case it ought to be understood in terms of a non-affirming negative phenomena. On the other hand, when it is discussed from the point of view of experience, it should be understood more in terms of an affirming negation – 14th Dalai Lama[121]

East Asian Buddhism

Painting of Śramaṇa Zhiyi of the Tiantai school.

Tiantai

The schools of Buddhism that had existed in China prior to the emergence of the Tiantai are generally believed to represent direct transplantations from India, with little modification to their basic doctrines and methods. The Tiantai school, founded by Zhiyi (538–597),[122] was the first truly unique Chinese Buddhist philosophical school. The doctrine of Tiantai was based on the ekayana or "one vehicle" doctrine taught in the Lotus sutra and sought to bring together all Buddhist teachings and texts into a comprehensively inclusive hierarchical system, which placed the Lotus sutra at the top of this hierarchy.

Tiantai's metaphysics is an immanent holism, which sees every phenomenon, moment or event as conditioned and manifested by the whole of reality. Every instant of experience is a reflection of every other, and hence, suffering and nirvana, good and bad, Buddhahood and evildoing, are all “inherently entailed” within each other.[123] Each moment of consciousness is simply the Absolute itself, infinitely immanent and self reflecting.

This metaphysics is entailed in the Tiantai teaching of the "three truths" which is an extension of the Mādhyamaka two truths doctrine. The three truths are: the conventional truth of appearance, the truth of emptiness (shunyata) and the third truth of 'the exclusive Center' (但中 danzhong) or middle way, which is beyond conventional truth and emptiness. This third truth is the Absolute and expressed by the claim that nothing is “Neither-Same-Nor-Different” than anything else, but rather each 'thing' is the absolute totality of all things manifesting as a particular, everything is mutually contained within each thing. Everything is a reflection of 'The Ultimate Reality of All Appearances'(諸法實相 zhufashixiang) and each thought "contains three thousand worlds". This perspective allows the Tiantai school to state such seemingly paradoxical things as "evil is ineradicable from the highest good, Buddhahood."[123] Moreover, in Tiantai, nirvana and samsara are the ultimately the same, as Zhiyi writes "A single, unalloyed reality is all there is – no entities whatever exist outside of it."[122]

Though Zhiyi did write "One thought contains three thousand worlds", this does not entail idealism. According to Zhiyi, "The objects of the [true] aspects of reality are not something produced by Buddhas, gods, or men. They exist inherently on their own and have no beginning" (The Esoteric Meaning, 210). This is then a form of realism, which sees the mind as real as the world, interconnected with and inseparable from it.[122] In Tiantai thought, ultimate reality is simply the phenomenal world of interconnected events or dharmas.

Other key figures of Tiantai thought are Zhanran (711–782) and Siming Zhili (960–1028). Zhanran developed the idea that non-sentient beings have Buddha nature, since they are also a reflection of the Absolute. In Japan, this school was known as Tendai and was first brought to the island by Saicho.

Huayan

A 3D rendering of Indra's net.

The Huayan developed the doctrine of "interpenetration" or "coalescence" (Wylie: zung-'jug; Sanskrit: yuganaddha),[124][125] based on the Avataṃsaka Sūtra (Flower Garland sutra), a Mahāyāna scripture. Huayan holds that all phenomena (Sanskrit: dharmas) are deeply interconnected, mutually arising and that every phenomena contains every other phenomena. Various metaphors and images are used to illustrate this idea. The first is known as Indra's net. The net is set with jewels which have the extraordinary property that they reflect all of the other jewels, while the reflections also contain every other reflection, ad infinitum. The second image is that of the world text. This image portrays the world as consisting of an enormous text which is as large as the universe itself. The words of the text are composed of the phenomena that make up the world. However, every atom of the world contains the whole text within it. It is the work of a Buddha to let out the text so that beings can be liberated from suffering.

Fazang (Fa-tsang, 643–712), one of the most important Huayan thinkers, wrote 'Essay on the Golden Lion' and 'Treatise on the Five Teachings', which contain other metaphors for the interpenetration of reality. He also used the metaphor of a House of mirrors. Fazang introduced the distinction of "the Realm of Principle" and "the Realm of Things". This theory was further developed by Cheng-guan (738–839) into the major Huayan thesis of "the fourfold Dharmadhatu" (dharma realm): the Realm of Principle, the Realm of Things, the Realm of the Noninterference between Principle and Things, and the Realm of the Noninterference of All Things.[122] The first two are the universal and the particular, the third is the interpenetration of universal and particular, and the fourth is the interpenetration of all particulars. The third truth was explained by the metaphor of a golden lion, the gold is the universal and the particular is the shape and features of the lion.[126]

While both Tiantai and Huayan hold to the interpenetration and interconnection of all things, their metaphysics have some differences. Huayan metaphysics is influenced by Yogacara thought and is closer to idealism. The Avatamsaka sutra compares the phenomenal world to a dream, an illusion, and a magician’s conjuring. The sutra states nothing has true reality, location, beginning and end, or substantial nature. The Avatamsaka also states that "The triple world is illusory – it is only made by one mind" and Fazang echoes this by writing "outside of mind there is not a single thing that can be apprehended."[122] Furthermore, according to Huayan thought, each mind creates its own world "according to their mental patterns", and "these worlds are infinite in kind" and constantly arising and passing away.[122] However, in Huayan, mind is not real either, but also empty. The true reality in Huayan, the noumenon, or "Principle" is likened to a mirror, while phenomena are compared to reflections in the mirror. It is also compared to the ocean, and phenomena to waves.[122]

In Korea, this school was known as Hwaeom and is represented in the work of Wonhyo (617–686), who also wrote about the idea of essence-function, a central theme in Korean Buddhist thought. In Japan, Huayan is known as Kegon and one of its major proponents was Myōe, who also introduced Tantric practices.

Chan/Zen

The philosophy of Chinese Chan Buddhism and Japanese Zen is based on various sources, these include Madhyamaka, Yogacara, the Laṅkāvatāra Sūtra, Huayan and the Buddha nature texts. An important issue in Chan is that of subitism or "sudden enlightenment", the idea that enlightenment happens all at once in a flash of insight. This view was promoted by Shenhui and is a central issue discussed in the Platform Sutra, a key Chan scripture composed in China.

Huayan philosophy also had an influence on Chan. The theory of the Fourfold Dharmadhatu influenced the Five Ranks of Dongshan Liangjie (806-869), the founder of the Caodong Chan lineage.[126] Guifeng Zongmi, who was also a patriarch of Huayan Buddhism, wrote extensively on the philosophy of Chan and on the Avatamsaka sutra.

In Japan, the founder of Soto Zen, Dogen (1200–1253), wrote many works on the philosophy of Zen, and the Shobogenzo is his magnum opus.

In Korea, Chinul is an important exponent of Seon Buddhism.

Esoteric Buddhism

The Garbhadhatu mandala. The center square represents the young stage of Vairocana Buddha.

Tantric Buddhism arrived in China in the 7th century, during the Tang Dynasty. In China, this form of Buddhism is known as Mìzōng (密宗), or "Esoteric School" and Zhenyan (true word, Sanskrit: Mantrayana). Kūkai (AD774–835) is a major Japanese Buddhist philosopher and the founder of the Tantric Shingon (true word) school in Japan. He wrote on a wide variety of topics such as public policy, language, the arts, literature, music and religion. After studying in China under Huiguo, Kūkai brought together various elements into a cohesive philosophical system of Shingon.

Kūkai's philosophy is based on the Mahavairocana Tantra and the Vajrasekhara Sutra (both from the seventh century). His Benkenmitsu nikkyôron (Treatise on the Differences Between Esoteric and Exoteric Teachings) outlines the difference between exoteric, mainstream Mahayana Buddhism (kengyô) and esoteric Tantric Buddhism (mikkyô).[127] Kūkai provided the theoretical framework for the esoteric Buddhist practices of Mantrayana, bringing the gap between the doctrine of the sutras and tantric practices. At the foundation of Kūkai's thought is the Trikaya doctrine, which holds there are three "bodies of the Buddha".

According to Kūkai, esoteric Buddhism has the Dharmakaya (Jpn: hosshin, embodiment of truth) as its source, which is associated with Vairocana Buddha (Dainichi). Hosshin is embodied absolute reality and truth. Hosshin is mostly ineffable but can be experienced through esoteric practices such as mudras and mantras. While Mahayana is taught by the historical Buddha (nirmankaya), it does not have ultimate reality as its source or the practices to experience the esoteric truth. For Shingon, from an enlightened perspective, the whole phenomenal world itself is also the teaching of Vairocana.[127] The body of the world, its sounds and movements, is the body of truth (dharma) and furthermore it is also identical with the personal body of the cosmic Buddha. For Kūkai, world, actions, persons and Buddhas are all part of the cosmic monologue of Vairocana, they are the truth being preached, to its own self manifestations. This is hosshin seppô (literally: “the dharmakâya's expounding of the Dharma”) which can be accessed through mantra which is the cosmic language of Vairocana emanating through cosmic vibration concentrated in sound.[127] In a broad sense, the universe itself a huge text expressing ultimate truth (Dharma) which must be "read".

Dainichi means "Great Sun" and Kūkai uses this as a metaphor for the great primordial Buddha, whose teaching and presence illuminates and pervades all, like the light of the sun. This immanent presence also means that every being already has access to enlightenment (hongaku) and Buddha nature, and that because of this, there is the possibility of "becoming Buddha in this very embodied existence" (sokushinjôbutsu).[127] This is achieved because of the non-dual relationship between the macrocosm of Hosshin and the microcosm of the Shingon practitioner.

Kūkai's exposition of what has been called Shingon's "metaphysics", is based on the three aspects of the cosmic truth or Hosshin - body, appearance and function.[127] The body is the physical and mental elements, which are the body and mind of the cosmic Buddha and which is also empty (Shunyata) The physical universe for Shingon, contains the interconnected mental and physical events. The appearance aspect is the form of the world, which appears as mandalas of interconnected realms and is depicted in mandala art such the Womb Realm mandala. The function is the movement and change which happens in the world, which includes change in forms, sounds and thought. These forms, sounds and thoughts are expressed by the Shingon practitioner in various rituals and tantric practices which allow them to connect with and inter-resonate with Dainichi and hence reach enlightenment here and now.[127]

Modern philosophy

Anagarika Dharmapala
A portrait of Gendün Chöphel in India, 1936.
Kitarō Nishida, professor of philosophy at Kyoto University and founder of the Kyoto School.

In Sri Lanka, Buddhist modernists such as Anagarika Dharmapala (1864-1933) and the American convert Henry Steel Olcott sought to show that Buddhism was rational and compatible with modern Scientific ideas such as the theory of evolution.[128] Dharmapala also argued that Buddhism included a strong social element, interpreting it as liberal, altruistic and democratic. K. N. Jayatilleke wrote the classic modern account of Buddhist epistemology (Early Buddhist Theory of Knowledge, 1963) and his student David Kalupahana wrote on the history of Buddhist thought and psychology. Other important Sri Lankan Buddhist thinkers include Ven Ñāṇananda (Concept and Reality), Walpola Rahula, Hammalawa Saddhatissa (Buddhist Ethics, 1987), Gunapala Dharmasiri (A Buddhist critique of the Christian concept of God, 1988), P. D. Premasiri and R. G. de S. Wettimuny.[129]

In 20th century China, the modernist Taixu (1890-1947) advocated a reform and revival of Buddhism. His promoted an idea of a Buddhist Pure Land, not as a metaphysical place in Buddhist cosmology but as something possible to create here and now in this very world which could be achieved through a "Buddhism for Human Life" (Chinese: 人生佛教; pinyin: rénshēng fójiào) which was free of supernatural beliefs.[130] Taixu also wrote on the connections between modern science and Buddhism, ultimately holding that “scientific methods can only corroborate the Buddhist doctrine, they can never advance beyond it”.[131] Like Taixu, Yin Shun (1906–2005) advocated a form of Humanistic Buddhism grounded in concern for humanitarian issues and his students and followers have been influential in promoting Humanistic Buddhism in Taiwan. This period also saw a revival of the study of Weishi (Yogachara), by Yang Rensan (1837-1911), Ouyang Jinwu (1871-1943) and Liang Shuming (1893–1988).[132]

One of Tibetan Buddhism's most influential modernist thinkers is Gendün Chöphel (1903–1951), who, according to Donald S. Lopez Jr. “was arguably the most important Tibetan intellectual of the twentieth century.”[133] Gendün Chöphel traveled throughout India with the Indian Buddhist Rahul Sankrityayan and wrote a wide variety of material, including works promoting the importance of modern science to his Tibetan countrymen and also Buddhist philosophical texts such as Adornment for Nagarjuna’s Thought. Another very influential Tibetan Buddhist modernist was Chögyam Trungpa, whose Shambhala Training was meant to be more suitable to modern Western sensitivities by offering a vision of "secular enlightenment".[134]

In Southeast Asia, thinkers such as Buddhadasa, Thích Nhất Hạnh, Sulak Sivaraksa and Aung San Suu Kyi have promoted a philosophy of socially Engaged Buddhism and have written on the socio-political application of Buddhism. Likewise, Buddhist approaches to economic ethics (Buddhist economics) have been explored in the works of E. F. Schumacher,[135] Prayudh Payutto, Neville Karunatilake and Padmasiri de Silva. The study of the Pali Abhidhamma tradition continued to be influential in Myanmar, where it was developed by monks such as Ledi Sayadaw and Mahasi Sayadaw.

Japanese Buddhist philosophy was heavily influenced by the work of the Kyoto School which included Kitaro Nishida, Keiji Nishitani, Hajime Tanabe and Masao Abe. These thinkers brought Buddhist ideas in dialogue with Western philosophy, especially European phenomenologists and existentialists. The most important trend in Japanese Buddhist thought after the formation of the Kyoto school is Critical Buddhism, which argues against several Mahayana concepts such as Buddha nature and original enlightenment.[130] Nichiren (1222–1282) made the practice and universal message of the Lotus Sutra more readily available to the population. He is of particular importance in the history of thought and religion as his teachings constitute a separate sect of Buddhism, the only major sect of have originated in Japan [136]:xi In Nichiren Buddhism, the work of Daisaku Ikeda has also been popular.

The Japanese Zen Buddhist D.T. Suzuki (1870–1966) was instrumental in bringing Zen Buddhism to the West and his Buddhist modernist works were very influential in the United States. Suzuki's worldview was a Zen Buddhism influenced by Romanticism and Transcendentalism, which promoted a spiritual freedom as "a spontaneous, emancipatory consciousness that transcends rational intellect and social convention."[137] This idea of Buddhism influenced the Beat writers and a contemporary representative of Western Buddhist Romanticism is Gary Snyder. The American Theravada Buddhist monk Thanissaro Bhikkhu has critiqued 'Buddhist Romanticism' in his writings.

Western Buddhist monastics and priests such as Nanavira Thera, Bhikkhu Bodhi, Nyanaponika Thera, Robert Aitken, Taigen Dan Leighton, Matthieu Ricard have written texts on Buddhist philosophy. A feature of Buddhist thought in the West has been a desire for dialogue and integration with modern science and psychology, and various modern Buddhists such as Alan Wallace, James H. Austin, Mark Epstein and the 14th Dalai Lama have worked and written on this issue.[138][139] Another area of convergence has been Buddhism and environmentalism, which is explored in the work of Joanna Macy. Another Western Buddhist philosophical trend has been the project to secularize Buddhism, as seen in the works of Stephen Batchelor.

In the West, Comparative philosophy between Buddhist and Western thought began with the work of Charles A. Moore who founded the journal Philosophy East and West. Contemporary Western Academics such as Mark Siderits, Jan Westerhoff, Jonardon Ganeri, Miri Albahari, Owen Flanagan, Damien Keown, Tom Tillemans, David Loy, Evan Thompson and Jay Garfield have written various works which interpret Buddhist ideas through Western philosophy.

Comparison with other philosophies

Baruch Spinoza, though he argued for the existence of a permanent reality, asserts that all phenomenal existence is transitory. In his opinion sorrow is conquered "by finding an object of knowledge which is not transient, not ephemeral, but is immutable, permanent, everlasting." The Buddha taught that the only thing which is eternal is Nirvana. David Hume, after a relentless analysis of the mind, concluded that consciousness consists of fleeting mental states. Hume's Bundle theory is a very similar concept to the Buddhist skandhas, though his skepticism about causation lead him to opposite conclusions in other areas. Arthur Schopenhauer's philosophy parallels Buddhism in his affirmation of asceticism and renunciation as a response to suffering and desire.

Ludwig Wittgenstein's "language-game" closely parallel the warning that intellectual speculation or papañca is an impediment to understanding, as found in the Buddhist Parable of the Poison Arrow. Friedrich Nietzsche, although himself dismissive of Buddhism as yet another nihilism, had a similar impermanent view of the self. Heidegger's ideas on being and nothingness have been held by some[who?] to be similar to Buddhism today.[140]

An alternative approach to the comparison of Buddhist thought with Western philosophy is to use the concept of the Middle Way in Buddhism as a critical tool for the assessment of Western philosophies. In this way Western philosophies can be classified in Buddhist terms as eternalist or nihilist. In a Buddhist view all philosophies are considered non-essential views (ditthis) and not to be clung to.

AI will upload and access our memories, predicts Siri co-inventor

"Instead of asking how smart we can make our machines, let's ask how smart our machines can make us."
April 26, 2017
Original link:  http://www.kurzweilai.net/ai-will-upload-and-access-our-memories-predicts-siri-inventor
“Hey Siri, what’s the name of that person I met yesterday?” (credit: Apple Inc.)

Instead of replacing humans with robots, artificial intelligence should be used more for augmenting human memory and other human weaknesses, Apple Inc. executive Tom Gruber suggested at the TED 2017 conference yesterday.

Thanks to the internet and our smartphones, much of our  personal data is already being captured, notes Gruber, who was one the inventors of voice-controlled intelligent-assistant Siri. Future AI memory enhancement could be especially life-changing for those with Alzheimer’s or dementia, he suggested.

Limitless

“Superintelligence should give us super-human abilities,” he said. “As machines get smarter, so do we. Artificial intelligence can enable partnerships where each human on the team is doing what they do best. Instead of asking how smart we can make our machines, let’s ask how smart our machines can make us.

“I can’t say when or what form factors are involved, but I think it is inevitable,” he said. “What if you could have a memory that was as good as computer memory and is about your life? What if you could remember every person you ever met? How to pronounce their name? Their family details? Their favorite sports? The last conversation you had with them?”

Gruber’s ideas mesh with a prediction by Ray Kurzweil: “Once we have achieved complete models of human intelligence, machines will be capable of combining the flexible, subtle human levels of pattern recognition with the natural advantages of machine intelligence, in speed, memory capacity, and, most importantly, the ability to quickly share knowledge and skills.”

Two projects announced last week aim in that direction: Facebook’s plan to develop a non-invasive brain-computer interface that will let you type at 100 words per minute and Elon Musks’ proposal that we become superhuman cyborgs to deal with superintelligent AI.

But trusting machines also raises security concerns, Gruber warned. “We get to choose what is and is not recalled,” he said. “It’s absolutely essential that this be kept very secure.”

Enlightenment in Buddhism

From Wikipedia, the free encyclopedia

The English term enlightenment is the western translation of the term bodhi, "awakening", which was popularised in the Western world through the 19th century translations of Max Müller. It has the western connotation of a sudden insight into a transcendental truth.

The term is also being used to translate several other Buddhist terms and concepts used to denote insight (prajna, kensho and satori);[1] knowledge (vidhya); the "blowing out" (Nirvana) of disturbing emotions and desires and the subsequent freedom or release (vimutti); and the attainment of Buddhahood, as exemplified by Gautama Buddha.

What exactly constituted the Buddha's awakening is unknown. It may probably have involved the knowledge that liberation was attained by the combination of mindfulness and dhyāna, applied to the understanding of the arising and ceasing of craving. The relation between dhyana and insight is a core problem in the study of Buddhism, and is one of the fundamentals of Buddhist practice.
In the western world the concept of (spiritual) enlightenment has taken on a romantic meaning. It has become synonymous with self-realization and the true self and false self, being regarded as a substantial essence being covered over by social conditioning.

Translation

Robert S. Cohen notes that the majority of English books on Buddhism use the term "enlightenment" to translate the term bodhi.[6] The root budh, from which both bodhi and Buddha are derived, means "to wake up" or "to recover consciousness".[6] Cohen notes that bodhi is not the result of an illumination, but of a path of realization, or coming to understanding.[6] The term "enlightenment" is event-oriented, whereas the term "awakening" is process-oriented.[6] The western use of the term "enlighten" has Christian roots, as in Calvin's "It is God alone who enlightens our minds to perceive his truths".[7]

Early 19th century bodhi was translated as "intelligence".[7] The term "enlighten" was first being used in 1835, in an English translation of a French article,[8] while the first recorded use of the term 'enlightenment' is credited (by the Oxford English Dictionary) to the Journal of the Asiatic Society of Bengal (February, 1836). In 1857 The Times used the term "the Enlightened" for the Buddha in a short article, which was reprinted the following year by Max Müller.[9] Thereafter, the use of the term subsided, but reappeared with the publication of Max Müller's Chips from a german Workshop, which included a reprint from the Times-article. The book was translated in 1969 into German, using the term "der Erleuchtete".[10] Max Müller was an essentialist, who believed in a natural religion, and saw religion as an inherent capacity of human beings.[11] "Enlightenment" was a means to capture natural religious truths, as distinguished from mere mythology.[12][note 1]

By the mid-1870s it had become commonplace to call the Buddha "enlightened", and by the end of the 1880s the terms "enlightened" and "enlightenment" dominated the English literature.[9]

Terms

Insight

Bodhi

Bodhi (Sanskrit, Pāli), from the verbal root budd, "to awaken", "to understand",[13] means literally "to have woken up and understood".[14] According to Johannes Bronkhorst,[15] Tillman Vetter,[16] and K.R. Norman,[17] bodhi was at first not specified. K.R. Norman:
It is not at all clear what gaining bodhi means. We are accustomed to the translation "enlightenment" for bodhi, but this is misleading ... It is not clear what the buddha was awakened to, or at what particular point the awakening came.[18]
According to Norman, bodhi may basically have meant the knowledge that nibbana was attained,[19][20] due to the practice of dhyana.[17][16] Originally only "prajna" may have been mentioned,[15] and Tillman Vetter even concludes that originally dhyana itself was deemed liberating, with the stilling of pleasure of pain in the fourth jhana.[16] Gombrich also argues that the emphasis on insight is a later development.[21]

In Theravada Buddhism, bodhi refers to the realisation of the four stages of enlightenment and becoming an Arahant.[14] In Theravada Buddhism, bodhi is equal to supreme insight, and the realisation of the four noble truths, which leads to deliverance.[14] According to Nyanatiloka,
(Through Bodhi) one awakens from the slumber or stupor (inflicted upon the mind) by the defilements (kilesa, q.v.) and comprehends the Four Noble Truths (sacca, q.v.).[13]
This equation of bodhi with the four noble truths is a later development, in response to developments within Indian religious thought, where "liberating insight" was deemed essential for liberation.[15][16] The four noble truths as the liberating insight of the Buddha eventually were superseded by Pratītyasamutpāda, the twelvefold chain of causation, and still later by anatta, the emptiness of the self.[15]

In Mahayana Buddhism, bodhi is equal to prajna, insight into the Buddha-nature, sunyata and tathatā.[22] This is equal to the realisation of the non-duality of absolute and relative.[22]

Prajna

In Theravada Buddhism pannā (Pali) means "understanding", "wisdom", "insight".[23] "Insight" is equivalent to vipassana', insight into the three marks of existence, namely anicca, dukkha and anatta.[23] Insight leads to the four stages of enlightenment and Nirvana.[23]
In Mahayana Buddhism Prajna (Sanskrit) means "insight" or "wisdom", and entails insight into sunyata. The attainment of this insight is often seen as the attainment of "enlightenment".

Kensho and satori

Kensho and Satori are Japanese terms used in Zen traditions. Kensho means "seeing into one's true nature." Ken means "seeing", sho means "nature", "essence",[25] c.q Buddha-nature. Satori (Japanese) is often used interchangeably with kensho, but refers to the experience of kensho.[25] The Rinzai tradition sees kensho as essential to the attainment of Buddhahood, but considers further practice essential to attain Buddhahood.

East-Asian (Chinese) Buddhism emphasizes insight into Buddha-nature. This term is derived from Indian tathagata-garbha thought, "the womb of the thus-gone" (the Buddha), the inherent potential of every sentient being to become a Buddha. This idea was integrated with the Yogacara-idea of the ālaya vijñāna, and further developed in Chinese Buddhism, which integrated Indian Buddhism with native Chinese thought. Buddha-nature came to mean both the potential of awakening and the whole of reality, a dynamic interpenetration of absolute and relative. In this awakening it is realized that observer and observed are not distinct entities, but mutually co-dependent.[26][27]

Knowledge

The term vidhya is being used in contrast to avidhya, ignorance or the lack of knowledge, which binds us to samsara. The Mahasaccaka Sutta[note 2] describes the three knowledges which the Buddha attained:[28][29][30]
  1. Insight into his past lives
  2. Insight into the workings of Karma and Reincarnation
  3. Insight into the Four Noble Truths
According to Bronkhorst, the first two knowledges are later additions, while insight into the four truths represents a later development, in response to concurring religious traditions, in which "liberating insight" came to be stressed over the practice of dhyana.[15]

Freedom

Vimutti, also called moksha, means "freedom",[31] "release",[31][note 3] "deliverance".[32] Sometimes a distinction is being made between ceto-vimutti, "liberation of the mind", and panna-vimutti, "liberation by understanding".[33] The Buddhist tradition recognises two kinds of ceto-vimutti, one temporarily and one permanent, the last being equivalent to panna-vimutti.[33][note 4]

Yogacara uses the term āśraya parāvŗtti, "revolution of the basis",[35]
... a sudden revulsion, turning, or re-turning of the ālaya vijñāna back into its original state of purity [...] the Mind returns to its original condition of non-attachment, non-discrimination and non-duality".[36]

Nirvana

Nirvana is the "blowing out" of disturbing emotions, which is the same as liberation.[web 1] The usage of the term "enlightenment" to translate "nirvana" was popularized in the 19th century, due, in part, to the efforts of Max Muller, who used the term consistently in his translations.[37]

Buddhahood

Anuttarā-samyak-saṃbodhi

Siddhartha Gautama, known as the Buddha, is said to have achieved full awakening, known as samyaksaṃbodhi (Sanskrit; Pāli: sammāsaṃbodhi), "perfect Buddhahood", or anuttarā-samyak-saṃbodhi, "highest perfect awakening".[38]

The term buddha has acquired somewhat different meanings in the various Buddhist traditions. An equivalent term for Buddha is Tathāgata, "the thus-gone". The way to Buddhahood is somewhat differently understood in the various buddhist traditions.

Buddha's awakening

Canonical accounts

In the suttapitaka, the Buddhist canon as preserved in the Theravada tradition, a couple of texts can be found in which the Buddha's attainment of liberation forms part of the narrative.[39][40][note 5]
The Ariyapariyesana Sutta[note 6] describes how the Buddha was dissatisfied with the teachings of Alara Kalama and Uddaka Ramaputta, wandered further through Magadhan country, and then found "an agreeable piece of ground" which served for striving. The sutra then only says that he attained Nibbana.[41]

The Mahasaccaka Sutta[note 7] describes his ascetic practices, which he abandoned. There-after he remembered a spontaneous state of jhana, and set out for jhana-practice. After destroying the disturbances of the mind, and attaining concentration of the mind, he attained three knowledges (vidhya):[28][29][30]
  1. Insight into his past lives
  2. Insight into the workings of Karma and Reincarnation
  3. Insight into the Four Noble Truths
According to the Mahasaccaka Sutta these insights, including the way to attain liberation, led the Buddha himself straight to liberation.[42] called "awakening."[43]

Critical assessment

Schmithausen[note 8] notes that the mention of the four noble truths as constituting "liberating insight", which is attained after mastering the Rupa Jhanas, is a later addition to texts such as Majjhima Nikaya 36.[44][15][16] Bronkhorst notices that
...the accounts which include the Four Noble Truths had a completely different conception of the process of liberation than the one which includes the Four Dhyanas and the destruction of the intoxicants.[45]
It calls in question the reliability of these accounts, and the relation between dhyana and insight, which is a core problem in the study of early Buddhism.[16][15][21] Originally the term prajna may have been used, which came to be replaced by the four truths in those texts where "liberating insight" was preceded by the four jhanas.[46] Bronkhorst also notices that the conception of what exactly this "liberating insight" was developed throughout time. Whereas originally it may not have been specified, later on the four truths served as such, to be superseded by pratityasamutpada, and still later, in the Hinayana schools, by the doctrine of the non-existence of a substantial self or person.[47] And Schmithausen notices that still other descriptions of this "liberating insight" exist in the Buddhist canon:
"that the five Skandhas are impermanent, disagreeable, and neither the Self nor belonging to oneself";[note 9] "the contemplation of the arising and disappearance (udayabbaya) of the five Skandhas";[note 10] "the realisation of the Skandhas as empty (rittaka), vain (tucchaka) and without any pith or substance (asaraka).[note 11][48]
An example of this substitution, and its consequences, is Majjhima Nikaya 36:42-43, which gives an account of the awakening of the Buddha.[49]

Development of Buddhahood in Buddhist traditions

In Theravada Buddhism, reaching full awakening is equivalent in meaning to reaching Nirvāṇa.[web 2] Attaining Nirvāṇa is the ultimate goal of Theravada and other śrāvaka traditions.[web 3] It involves the abandonment of the ten fetters and the cessation of dukkha or suffering. Full awakening is reached in four stages.

In Mahāyāna Buddhism the Bodhisattva is the ideal. The ultimate goal is not only of one's own liberation in Buddhahood, but the liberation of all living beings.

In time, the Buddha's awakening came to be understood as an immediate full awakening and liberation, instead of the insight into and certainty about the way to follow to reach enlightenment. However, in some Zen traditions this perfection came to be relativized again; according to one contemporary Zen master, "Shakyamuni buddha and Bodhidharma are still practicing."[50]
But Mahayana Buddhism also developed a cosmology with a wide range of buddhas and bodhisattvas, who assist humans on their way to liberation.

Nichiren Buddhism regards Buddhahood as a state of perfect freedom, in which one is awakened to the eternal and ultimate truth that is the reality of all things. This supreme state of life is characterized by boundless wisdom and infinite compassion. The Lotus Sutra reveals that Buddhahood is a potential in the lives of all beings. [51]

Western understanding of enlightenment

In the western world the concept of enlightenment has taken on a romantic meaning.[2][3][4][5] It has become synonymous with self-realization and the true self, being regarded as a substantial essence being covered over by social conditioning.[2][3][4][5]

Enlightenment as "Aufklärung"

The use of the western word enlightenment is based on the supposed resemblance of bodhi with Aufklärung, the independent use of reason to gain insight into the true nature of our world. In fact there are more resemblances with Romanticism than with the Enlightenment: the emphasis on feeling, on intuitive insight, on a true essence beyond the world of appearances.[52]

Awakening

The equivalent term "awakening" has also been used in a Christian context, namely the Great Awakenings, several periods of religious revival in American religious history. Historians and theologians identify three or four waves of increased religious enthusiasm occurring between the early 18th century and the late 19th century. Each of these "Great Awakenings" was characterized by widespread revivals led by evangelical Protestant ministers, a sharp increase of interest in religion, a profound sense of conviction and redemption on the part of those affected, an increase in evangelical church membership, and the formation of new religious movements and denominations.

Romanticism and transcendentalism

The romantic idea of enlightenment as insight into a timeless, transcendent reality has been popularized especially by D.T. Suzuki.[web 4][web 5] Further popularization was due to the writings of Heinrich Dumoulin.[53][54][web 6] Dumoulin viewed metaphysics as the expression of a transcendent truth, which according to him was expressed by Mahayana Buddhism, but not by the pragmatic analysis of the oldest Buddhism, which emphasizes anatta.[55] This romantic vision is also recognizable in the works of Ken Wilber.[56]

In the oldest Buddhism this essentialism is not recognizable.[57][web 7] According to critics it doesn't really contribute to a real insight into Buddhism:[web 8]
...most of them labour under the old cliché that the goal of Buddhist psychological analysis is to reveal the hidden mysteries in the human mind and thereby facilitate the development of a transcendental state of consciousness beyond the reach of linguistic expression.[58]

Enlightenment and experience

A common reference in western culture is the notion of "enlightenment experience". This notion can be traced back to William James, who used the term "religious experience" in his book, The Varieties of Religious Experience.[59] Wayne Proudfoot traces the roots of the notion of "religious experience" further back to the German theologian Friedrich Schleiermacher (1768-1834), who argued that religion is based on a feeling of the infinite. Schleiermacher used the notion of "religious experience" to defend religion against the growing scientific and secular critique.

It was popularised by the Transcendentalists, and exported to Asia via missionaries.[60] Transcendentalism developed as a reaction against 18th Century rationalism, John Locke's philosophy of Sensualism, and the predestinationism of New England Calvinism. It is fundamentally a variety of diverse sources such as Hindu texts like the Vedas, the Upanishads and the Bhagavad Gita,[61] various religions, and German idealism.[62]

It was adopted by many scholars of religion, of which William James was the most influential.[63][note 12]

The notion of "experience" has been criticised.[3][67][68] Robert Sharf points out that "experience" is a typical western term, which has found its way into Asian religiosity via western influences.[3][note 13]

The notion of "experience" introduces a false notion of duality between "experiencer" and "experienced", whereas the essence of kensho is the realisation of the "non-duality" of observer and observed.[70][dead link] [71] "Pure experience" does not exist; all experience is mediated by intellectual and cognitive activity.[72][73] The specific teachings and practices of a specific tradition may even determine what "experience" someone has, which means that this "experience" is not the proof of the teaching, but a result of the teaching.[74] A pure consciousness without concepts, reached by "cleaning the doors of perception" as per romantic poet William Blake[note 14], would, according to Mohr, be an overwhelming chaos of sensory input without coherence.[76]

Bodhi Day

Sakyamuni's Buddhahood is celebrated on Bodhi Day. In Sri Lanka and Japan different days are used for this celebration.

According to the Theravada tradition in Sri Lanka, Sakyamuni reached Buddhahood at the full moon in May. This is celebrated at Wesak Poya, the full moon in May, as Sambuddhatva jayanthi (also known as Sambuddha jayanthi).[web 9]

According to the Zen tradition, the Buddha reached his decisive insight on 8 December. This is celebrated in Zen monasteries with a very intensive eight-day session of Rōhatsu.

In a neurotechnology future, human-rights laws will need to be revisited

April 28, 2017
Original link:  http://www.kurzweilai.net/in-a-neurotechnology-future-human-rights-laws-will-need-to-be-revisited
New forms of brainwashing include transcranial magnetic stimulation (TMS) to neuromodulate the brain regions responsible for social prejudice and political and religious beliefs, say researchers. (credit: U.S. National Library of Medicine)

New human rights laws to prepare for rapid current advances in neurotechnology that may put “freedom of mind” at risk have been proposed in the open access journal Life Sciences, Society and Policy.

Four new human rights laws could emerge in the near future to protect against exploitation and loss of privacy, the authors of the study suggest: The right to cognitive liberty, the right to mental privacy, the right to mental integrity, and the right to psychological continuity.

Advances in neural engineering, brain imaging, and neurotechnology put freedom of the mind at risk, says Marcello Ienca, lead author and PhD student at the Institute for Biomedical Ethics at the University of Basel. “Our proposed laws would give people the right to refuse coercive and invasive neurotechnology, protect the privacy of data collected by neurotechnology, and protect the physical and psychological aspects of the mind from damage by the misuse of neurotechnology.”

Potential misuses

Sophisticated brain imaging and the development of brain-computer interfaces have moved away from a clinical setting into the consumer domain. There’s a risk that the technology could be misused and create unprecedented threats to personal freedom. For example:
  • Uses in criminal court as a tool for assessing criminal responsibility or even the risk of re-offending.*
  • Consumer companies using brain imaging for “neuromarketing” to understand consumer behavior and elicit desired responses from customers.
  • “Brain decoders” that can turn a person’s brain imaging data into images, text or sound.**
  • Hacking, allowing a third-party to eavesdrop on someone’s mind.***
International human rights laws currently make no specific mention of neuroscience. But as with the genetic revolution, the on-going neurorevolution will require consideration of human-rights laws and even the creation of new ones, the authors suggest.

* “A possibly game-changing use of neurotechnology in the legal field has been illustrated by Aharoni et al. (2013). In this study, researchers followed a group of 96 male prisoners at prison release. Using fMRI, prisoners’ brains were scanned during the performance of computer tasks in which they had to make quick decisions and inhibit impulsive reactions. The researchers followed the ex-convicts for 4 years to see how they behaved. The study results indicate that those individuals showing low activity in a brain region associated with decision-making and action (the Anterior Cingulate Cortex, ACC) are more likely to commit crimes again within 4 years of release (Aharoni et al. 2013). According to the study, the risk of recidivism is more than double in individuals showing low activity in that region of the brain than in individuals with high activity in that region. Their results suggest a “potential neurocognitive biomarker for persistent antisocial behavior”. In other words, brain scans can theoretically help determine whether certain convicted persons are at an increased risk of reoffending if released.” — Marcello Ienca and Roberto Andorno/Life Sciences, Society and Policy

** NASA and Jaguar are jointly developing a technology called Mind Sense, which will measure brainwaves to monitor the driver’s concentration in the car (Biondi and Skrypchuk 2017). If brain activity indicates poor concentration, then the steering wheel or pedals could vibrate to raise the driver’s awareness of the danger. This technology can contribute to reduce the number of accidents caused by drivers who are stressed or distracted. However, it also opens theoretically the possibility for third parties to use brain decoders to eavesdropping on people’s states of mind. — Marcello Ienca and Roberto Andorno/Life Sciences, Society and Policy

*** Criminally motivated actors could selectively erase memories from their victims’ brains to prevent being identified by them later on or simply to cause them harm. On the long term-scenario, they could be used by surveillance and security agencies with the purpose of selectively erasing dangerous, inconvenient from people’s brain as portrayed in the movie Men in Black with the so-called neuralyzer— Marcello Ienca and Roberto Andorno/Life Sciences, Society and Policy


Abstract of Towards new human rights in the age of neuroscience and neurotechnology

Rapid advancements in human neuroscience and neurotechnology open unprecedented possibilities for accessing, collecting, sharing and manipulating information from the human brain. Such applications raise important challenges to human rights principles that need to be addressed to prevent unintended consequences. This paper assesses the implications of emerging neurotechnology applications in the context of the human rights framework and suggests that existing human rights may not be sufficient to respond to these emerging issues. After analysing the relationship between neuroscience and human rights, we identify four new rights that may become of great relevance in the coming decades: the right to cognitive liberty, the right to mental privacy, the right to mental integrity, and the right to psychological continuity.

Artificial Intelligence—A Game Changer for Climate Change and the Environment

by | June 5, 2018
AI is continually improving climate models. Photo: Los Alamos National Lab

As the planet continues to warm, climate change impacts are worsening. In 2016, there were 772 weather and disaster events, triple the number that occurred in 1980. Twenty percent of species currently face extinction, and that number could rise to 50 percent by 2100. And even if all countries keep their Paris climate pledges, by 2100, it’s likely that average global temperatures will be 3˚C higher than in pre-industrial times.

But we have a new tool to help us better manage the impacts of climate change and protect the planet: artificial intelligence (AI). AI refers to computer systems that “can sense their environment, think, learn, and act in response to what they sense and their programmed objectives,” according to a World Economic Forum report, Harnessing Artificial Intelligence for the Earth.

In India, AI has helped farmers get 30 percent higher groundnut yields per hectare by providing information on preparing the land, applying fertilizer and choosing sowing dates. In Norway, AI helped create a flexible and autonomous electric grid, integrating more renewable energy.

An atmospheric river over California. Photo: NOAA

And AI has helped researchers achieve 89 to 99 percent accuracy in identifying tropical cyclones, weather fronts and atmospheric rivers, the latter of which can cause heavy precipitation and are often hard for humans to identify on their own. By improving weather forecasts, these types of programs can help keep people safe.


What are artificial intelligence, machine learning and deep learning?

Artificial intelligence has been around since the late 1950s, but today, AI’s capacities are rapidly improving thanks to several factors: the vast amounts of data being collected by sensors (in appliances, vehicles, clothing, etc.), satellites and the Internet; the development of more powerful and faster computers; the availability of open source software and data; and the increase in abundant, cheap storage. AI can now quickly discern patterns that humans cannot, make predictions more efficiently and recommend better policies.

The holy grail of artificial intelligence research is artificial general intelligence, when computers will be able to reason, abstract, understand and communicate like humans. But we are still far from that—it takes 83,000 processors 40 minutes to compute what one percent of the human brain can calculate in one second. What exists today is narrow AI, which is task-oriented and capable of doing some things, sometimes better than humans can do, such as recognizing speech or images and forecasting weather. Playing chess and classifying images, as in the tagging of people on Facebook, are examples of narrow AI.

AI considers its next move in chess. Photo: viegas

When Netflix and Amazon recommend shows and products based on our purchasing history, they’re using machine learning. Machine learning, which developed out of earlier AI, involves the use of algorithms (sets of rules to follow to solve a problem) that can learn from data. The more data the system analyzes, the more accurate it becomes as the system develops its own rules and the software evolves to achieve its goal.

Deep learning, a subset of machine learning, involves neural networks made up of multiple layers of connections or neurons, much like the human brain. Each layer has a separate task and as information passes through, the neurons give it a weight based on its accuracy vis a vis the assigned task. The final result is determined by the total of the weights.

Art created by deep learning. Photo: Gene Kogan

Deep learning enabled a computer system to figure out how to identify a cat—without any human input about cat features— after “seeing” 10 million random images from YouTube. Because deep learning essentially takes place in a “black box” through self-learning and evolving algorithms, however, scientists often don’t know how a system arrives at its results.

Artificial intelligence is a game changer

Microsoft believes that artificial intelligence, often encompassing machine learning and deep learning, is a “game changer” for climate change and environmental issues. The company’s AI for Earth program has committed $50 million over five years to create and test new applications for AI. Eventually it will help scale up and commercialize the most promising projects.

Columbia University’s Maria Uriarte, a professor of Ecology, Evolution and Environmental Biology, and Tian Zheng, a statistics professor at the Data Science Institute, received a Microsoft grant to study the effects of Hurricane Maria on the El Yunque National Forest in Puerto Rico. Uriarte and her colleagues want to know how tropical storms, which may worsen with climate change, affect the distribution of tree species in Puerto Rico.

Photo: Kevin Krajick

Hurricane Maria’s winds damaged thousands of acres of rainforest, however the only way to determine which tree species were destroyed and which withstood the hurricane at such a large scale is through the use of images. In 2017, a NASA flyover of Puerto Rico yielded very high-resolution photographs of the tree canopies. But how is it possible to tell one species from another by looking at a green mass from above over such a large area? The human eye could theoretically do it, but it would take forever to process the thousands of images.

Uriarte’s team has identified every tree in some plots. Photo: Kevin Krajick

The team is using artificial intelligence to analyze the high-resolution photographs and match them with Uriarte’s data—she has mapped and identified every single tree in given plots. Using the ground information from these specific plots, AI can figure out what the various species of trees look like from above in the flyover images. “Then we can use that information to extrapolate to a larger area,” explained Uriarte. “We use the plot data both to learn [i.e. to train the algorithm] and to validate [how well the algorithm is performing].”

Understanding how the distribution and composition of forests change in response to hurricanes is important because when forests are damaged, vegetation decomposes and emits more CO2 into the atmosphere. As trees grow back, since they are smaller, they store less carbon. If climate change results in more extreme storms, some forests will not recover, less carbon will be stored, and more carbon will remain in the atmosphere, exacerbating global warming.

There’s only so much that can be done from the ground, said Uriarte. Photo: Kevin Krajick

Uriarte says her work could not be done without artificial intelligence. “AI is going to revolutionize this field,” she said. “It’s becoming more and more important for everything that we do. It allows us to ask questions at a scale that we could not ask from below. There’s only so much that one can do [on the ground] … and then there are areas that are simply not accessible. The flyovers and the AI tools are going to allow us to study hurricanes in a whole different way. It’s super exciting.”

Another project, named Protection Assistant for Wildlife Security (PAWS) from the University of Southern California, is using machine learning to predict where poaching may occur in the future. Currently the algorithm analyzes past ranger patrols and poachers’ behavior from crime data; a Microsoft grant will help train it to incorporate real-time data to enable rangers to improve their patrols.

In Washington State, Long Live the Kings is trying to restore declining steelhead and salmon populations. With a grant from Microsoft, the organization will improve an ecosystem model that gathers data about salmon and steelhead growth, tracks fish and marine mammal movements, and monitors marine conditions. The model will help improve hatchery, harvest, and ecosystem management, and support habitat protection and restoration efforts.

How AI is used for energy

AI is increasingly used to manage the intermittency of renewable energy so that more can be incorporated into the grid; it can handle power fluctuations and improve energy storage as well.


The Department of Energy’s SLAC National Accelerator Laboratory operated by Stanford University will use machine learning and artificial intelligence to identify vulnerabilities in the grid, strengthen them in advance of failures, and restore power more quickly when failures occur. The system will first study part of the grid in California, analyzing data from renewable power sources, battery storage, and satellite imagery that can show where trees growing over power lines might cause problems in a storm. The goal is to develop a grid that can automatically manage renewable energy without interruption and recover from system failures with little human involvement.

Wind companies are using AI to get each turbine’s propeller to produce more electricity per rotation by incorporating real time weather and operational data. On large wind farms, the front row’s propellers create a wake that decreases the efficiency of those behind them. AI will enable each individual propeller to determine the wind speed and direction coming from other propellers, and adjust accordingly.

Researchers at the Department of Energy and National Oceanic and Atmospheric Administration (NOAA) are using AI to better understand atmospheric conditions in order to more accurately project the energy output of wind farms.

Artificial intelligence can enhance energy efficiency, too. Google used machine learning to help predict when its data centers’ energy was most in demand. The system analyzed and predicted when users were most likely to watch data-sucking Youtube videos, for example, and could then optimize the cooling needed. As a result, Google reduced its energy use by 40 percent.

Making cities more livable and sustainable

AI can also improve energy efficiency on the city scale by incorporating data from smart meters and the Internet of Things (the internet of computing devices that are embedded in everyday objects, enabling them to send and receive data) to forecast energy demand. In addition, artificial intelligence systems can simulate potential zoning laws, building ordinances, and flood plains to help with urban planning and disaster preparedness. One vision for a sustainable city is to create an “urban dashboard” consisting of real-time data on energy and water use and availability, traffic and weather to make cities more energy efficient and livable.

Beijing air pollution. Photo: Kentaro IEMOTO

In China, IBM’s Green Horizon project is using an AI system that can forecast air pollution, track pollution sources and produce potential strategies to deal with it. It can determine if, for example, it would be more effective to restrict the number of drivers or close certain power plants in order to reduce pollution in a particular area.

Another IBM system in development could help cities plan for future heat waves. AI would simulate the climate at the urban scale and explore different strategies to test how well they ease heat waves. For example, if a city wanted to plant new trees, machine learning models could determine the best places to plant them to get optimal tree cover and reduce heat from pavement.

Smart agriculture

Hotter temperatures will have significant impacts on agriculture as well.

Moisture sensors monitor soil water content for irrigation management. Photo: USDA NRCS

Data from sensors in the field that monitor crop moisture, soil composition and temperature help AI improve production and know when crops need watering. Incorporating this information with that from drones, which are also used to monitor conditions, can help increasingly automatic AI systems know the best times to plant, spray and harvest crops, and when to head off diseases and other problems. This will result in increased efficiency, enhanced yields, and lower use of water, fertilizer and pesticides.

Protecting the oceans

The Ocean Data Alliance is working with machine learning to provide data from satellites and ocean exploration so that decision-makers can monitor shipping, ocean mining, fishing, coral bleaching or the outbreak of a marine disease. With almost real time data, decision-makers and authorities will be able to respond to problems more quickly. Artificial intelligence can also help predict the spread of invasive species, follow marine litter, monitor ocean currents, keep track of dead zones and measure pollution levels.

A Taiwanese ship suspected of illegal fishing. Photo: US Coast Guard

The Nature Conservancy is partnering with Microsoft on using AI to map ocean wealth. Evaluating the economic value of ocean ecosystem services—such as seafood harvesting, carbon storage, tourism and more—will make better conservation and planning decisions possible. The data will be used to build models that consider food security, job creation and fishing yields to show the value of ecosystem services under differing conditions. This can help decision-makers determine the most important areas for fish productivity and conservation efforts, as well as the tradeoffs of potential decisions. The project already has maps and models for Micronesia, the Caribbean, Florida, and is expanding to Australia, Haiti, and Jamaica.

More sustainable transport on land

As vehicles become able to communicate with each other and with the infrastructure, artificial intelligence will help drivers avoid hazards and traffic jams. In Pittsburgh, an artificial intelligence system incorporating sensors and cameras that monitors traffic flow adjusts traffic lights when needed. The systems are functioning at 50 intersections with plans for 150 more, and have already reduced travel time by 25 percent and idling by more than 40 percent. Less idling, of course, means fewer greenhouse gas emissions.

Eventually, autonomous AI-driven shared transportation systems may replace personal vehicles.

Better climate predictions

As the climate changes, accurate projections are increasingly important. However, climate models often produce very different predictions, largely because of how data is broken down into discrete parts, how processes and systems are paired, and because of the large variety of spatial and temporal scales. The Intergovernmental Panel on Climate Change (IPCC) reports are based on many climate models and show the range of predictions, which are then averaged out.


Averaging them out, however, means that each climate model is given equal weight. AI is helping to determine which models are more reliable by giving added weight to those whose predictions eventually prove to be more accurate, and less weight to those performing poorly. This will help improve the accuracy of climate change projections.

AI and deep learning are also improving weather forecasting and the prediction of extreme events. That’s because they can incorporate much more of the real-world complexity of the climate system, such as atmospheric and ocean dynamics and ocean and atmospheric chemistry, into their calculations. This sharpens the precision of weather and climate modeling, making simulations more useful for decision-makers.

AI has many other uses

AI can help to monitor ecosystems and wildlife and their interactions. Its fast processing speeds can offer almost real-time satellite data to track illegal logging in forests. AI can monitor drinking water quality, manage residential water use, detect underground leaks in drinking water supply systems, and predict when water plants need maintenance. It can also simulate weather events and natural disasters to find vulnerabilities in disaster planning, determine which strategies for disaster response are most effective, and provide real-time disaster response coordination.

What are the risks of artificial intelligence?

While AI enables us to better manage the impacts of climate change and protect the environment in addition to transforming the fields of business, finance, health care, medicine, law, education and more, it is not without risks. Some prominent individuals such as the late physicist Stephen Hawking and Tesla CEO Elon Musk have warned of the existential dangers of uncontrolled artificial intelligence.

The World Economic Forum report identified six categories of AI risk:
  • Performance. The black box conclusions of AI may not be understandable to humans and thus it may be impossible to determine if they are accurate or desirable. Deep learning could be risky for applications such as early warning systems for natural disasters where more certainty is needed.
  • Security. AI could potentially be hacked, enabling bad actors to interfere with energy, transportation, early warning or other crucial systems.
  • Control risks. Since AI systems interact autonomously, they can produce unpredictable outcomes. For example, two systems came up with a language of their own that humans couldn’t understand.
  • Economic risks. Companies that are slower to adopt AI may suffer economic consequences as their AI-based competition advances. We are already seeing how brick and mortar stores are closing as the economy becomes increasingly digitized.
  • Social risk. AI is resulting in more automation, which will eliminate jobs in almost every field. Autonomous weapon systems could also hasten and exacerbate global conflicts.
  • Ethical risks. Since AI uses inferred assumptions about groups and communities in making decisions, it could lead to increased bias. The collection of data also raises privacy issues.
To deal with these risks, the World Economic Forum states that government and industry “must ensure the safety, explainability, transparency and validity of AI application.” More interaction among public and private entities, technologists, policy-makers and even philosophers, and more investments in research are needed to avert the potential risks of artificial intelligence—and to realize its potential benefits to the environment and humanity.

Science Is an Infinite-Sum Game

It’s a win–win endeavor with unlimited horizons for expanding our island of knowledge into the ocean of ignorance
Science Is an Infinite-Sum Game
Credit: Alberto Ghizzi Panizza Getty Images
It is commonly thought that an efficient way to get to the bottom of a scientific truth is to have two groups that distrust each other compete on the related discovery space. Is this really the case?

An example that comes to mind is the debate on the value of the Hubble constant—the expansion rate of the universe. For decades, Allan Sandage and G. A. Tammann deduced a value of 50 kilometers per second per megaparsec (km/s/Mpc) based on their observational data while Gérard de Vaucouleurs argued for a significantly different value of 100 km/s/Mpc (both of these were much smaller than Edwin Hubble’s original 1929 estimate of 500 km/s/Mpc, as a result of his systematic errors in the distances to a class of stars known as Cepheid variables). In his 1972 book Gravitation and Cosmology, Steven Weinberg had the brilliant insight of averaging the two claims; his estimate ended up being much closer to the actual value measured today of approximately 70 km/s/Mpc. In this case, the competition made each camp dig in their heels with the wrong value, whereas the truth lies at a compromise value in between.

Another example involves the first detection of the 21-centimeter line from the Milky Way galaxy. After the hyperfine transition of hydrogen was predicted theoretically by the Dutch astronomer H. C. Van de Hulst in 1945, Edward (Ed) Purcell decided to search for its signal in the sky. He installed together with his graduate student Harold (Doc) Ewen, a horn antenna through the window of an office in the Lyman Laboratory of the Harvard physics department and employed a frequency switching technique to successfully detect the expected Milky Way signal.

At the same time, a Dutch group led by Jan Oort was attempting to measure the same signal but without success. Ed, who did not know about the Dutch experiment, learned that Van de Hulst was coincidentally spending a sabbatical year at the Harvard College Observatory and sent Doc to tell him about their 21-cm discovery shortly after it was made. As a result, they found out about the competing experiment.

In a subsequent conversation with Jan Oort, Doc Ewen described the switch frequency technique which was essential for the discovery. After adopting this same method, the Dutch group succeeded in reproducing the detection of the 21-cm signal. The American and Dutch results were published back-to-back in volume 168 of Nature magazine in 1951. A subsequent confirmation of the detection by Australian radio astronomers was published later. In this example, the truth was identified as a result of a respectful cooperation between competing teams.

The above two examples imply that science may thrive as a result of cooperation rather than hostile competition. Contrary to capitalistic instincts, kindness and generosity might be the best traits for advancing scientific knowledge. The underlying rationale is simple. Scientific research is not a zero-sum game. In fact, it is an endeavor in which all players gain from the success of any one player, because past knowledge propels our ability to pursue additional knowledge.

The scientific endeavor might be adequately described as an infinite-sum game. Science resembles an island of knowledge in an infinite ocean of ignorance. Our horizon of opportunities is boundless, as we expand the surface of this precious island of knowledge that we inhabit.

If so, why are some bad practices still prevalent in science today despite the appeal inherent in cooperation? This shortfall is partly because some scientists are driven by ego to promote their status and not by the pursuit of truth, or because some had been frustrated by past experiences. Although limited resources tend to drive competition, they could also be used to encourage cooperation and sharing of information if managed appropriately.

Inspiring leadership can improve scientific practices and make future scientific progress more efficient. There is no doubt that scientific collaboration, like any other precious interaction in life, gives back in return more than you put into it.

The views expressed are those of the author(s) and are not necessarily those of Scientific American.

Representation of a Lie group

From Wikipedia, the free encyclopedia https://en.wikipedia.org/wiki/Representation_of_a_Lie_group...