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Wednesday, August 13, 2025

Western world

From Wikipedia, the free encyclopedia
  Countries and territories that are generally considered as constituents of the Western world
  Countries and territories whose inclusion as constituents of the Western world is contested

The Western world, also known as the West, primarily refers to various nations and states in Western EuropeNorthern America, and Australasia; with some debate as to whether those in Eastern Europe and Latin America also constitute the West. The Western world likewise is called the Occident (from Latin occidens 'setting down, sunset, west') in contrast to the Eastern world known as the Orient (from Latin oriens 'origin, sunrise, east'). Definitions of the "Western world" vary according to context and perspectives; the West is an evolving concept made up of cultural, political, and economic synergy among diverse groups of people, and not a rigid region with fixed borders and members.

Some historians contend that a linear development of the West can be traced from Ancient Greece and Rome, while others argue that such a projection constructs a false genealogy. A geographical concept of the West started to take shape in the 4th century CE when Constantine, the first Christian Roman emperor, divided the Roman Empire between the Greek East and Latin West. The East Roman Empire, later called the Byzantine Empire, continued for a millennium, while the West Roman Empire lasted for only about a century and a half. Significant theological and ecclesiastical differences led Western Europeans to consider the Christians in the Byzantine Empire as heretics. In 1054 CE, when the church in Rome excommunicated the patriarch of Byzantium, the politico-religious division between the Western church and Eastern church culminated in the Great Schism or the East–West Schism. Even though friendly relations continued between the two parts of Christendom for some time, the crusades made the schism definitive with hostility. The West during these crusades tried to capture trade routes to the East and failed, it instead discovered the Americas. In the aftermath of the European colonization of the Americas, primarily involving Western European powers, an idea of the "Western" world, as an inheritor of Latin Christendom emerged. According to the Oxford English Dictionary, the earliest reference to the term "Western world" was from 1586, found in the writings of William Warner.

The countries that are considered constituents of the West vary according to perspective rather than their geographical location. Countries like Australia and New Zealand, located in the Eastern Hemisphere are included in modern definitions of the Western world, as these regions and others like them have been significantly influenced by the British—derived from colonization, and immigration of Europeans—factors that grounded such countries to the West. Depending on the context and the historical period in question, Russia was sometimes seen as a part of the West, and at other times juxtaposed with it, as well as endorsing anti-Western sentiment. The United States became more prominently featured in the conceptualizations of the West as it rose as a great power, amidst the development of communication–transportation technologies like the telegraph and railroads "shrinking" the distance between both the Atlantic Ocean shores.

At some times between the 18th century and the mid-20th century, prominent countries in the West such as the United States, Canada, Brazil, Argentina, Australia, and New Zealand have been envisioned by some as ethnocracies for WhitesRacism is claimed as a contributing factor to Western European colonization of the New World, which today constitutes much of the geographical Western world and is split between Global North and Global South. Starting from the late 1960s, certain parts of the Western world have become notable for their diversity due to immigration and changes in fertility rates. The idea of "the West" over the course of time has evolved from a directional concept to a socio-political concept—temporalized and rendered as a concept of the future bestowed with notions of progress and modernity.

Introduction

The origins of Western civilization can be traced back to the ancient Mediterranean world. Ancient Greece and Ancient Rome are generally considered to be the birthplaces of Western civilization—Greece having heavily influenced Rome—the former due to its impact on philosophy, democracy, science, aesthetics, as well as building designs and proportions and architecture; the latter due to its influence on art, law, warfare, governance, republicanism, engineering and religion. Western Civilization is also closely associated with Christianity, the dominant religion in the West, with roots in Greco-Roman and Jewish thought. Christian ethics, drawing from the ethical and moral principles of its historical roots in Judaism, has played a pivotal role in shaping the foundational framework of Western societies. Earlier civilizations, such as the ancient Egyptians and Mesopotamians, had also significantly influenced Western civilization through their advancements in writing, law codes, and societal structures. The convergence of Greek-Roman and Judeo-Christian influences in shaping Western civilization has led certain scholars to characterize it as emerging from the legacies of Athens and Jerusalem, or Athens, Jerusalem and Rome.

In ancient Greece and Rome, individuals identified primarily as subjects of states, city-states, or empires, rather than as members of Western civilization. The distinct identification of Western civilization began to crystallize with the rise of Christianity during the Late Roman Empire. In this period, peoples in Europe started to perceive themselves as part of a unique civilization, differentiating from others like Islam, giving rise to the concept of Western civilization. By the 15th century, Renaissance intellectuals solidified this concept, associating Western civilization not only with Christianity but also with the intellectual and political achievements of the ancient Greeks and Romans.

Historians, such as Carroll Quigley in "The Evolution of Civilizations", contend that Western civilization was born around AD 500, after the fall of the Western Roman Empire, leaving a vacuum for new ideas to flourish that were impossible in Classical societies. In either view, between the fall of the Western Roman Empire and the Renaissance, the West (or those regions that would later become the heartland of the culturally "western sphere") experienced a period of decline, and then readaptation, reorientation and considerable renewed material, technological and political development. Classical culture of the ancient Western world was partly preserved during this period due to the survival of the Eastern Roman Empire and the introduction of the Catholic Church; it was also greatly expanded by the Arab importation of both the Ancient Greco-Roman and new technology through the Arabs from India and China to Europe.

Christopher Columbus arrives at the New World.

Since the Renaissance, the West evolved beyond the influence of the ancient Greeks and Romans and the Islamic world, due to the successful Second Agricultural, CommercialScientific, and Industrial revolutions (propellers of modern banking concepts). The West rose further with the 18th century's Age of Enlightenment and through the Age of Exploration's expansion of peoples of European empires in the 18th and 19th centuries, particularly the globe-spanning colonial empires of Western Europe. Numerous times, this expansion was accompanied by Catholic missionaries, who attempted to proselytize Christianity.

In the modern era, Western culture has undergone further transformation through the Renaissance, Ages of Discovery and Enlightenment, and the Industrial and Scientific Revolutions. The widespread influence of Western culture extended globally through imperialism, colonialism, and Christianization by Western powers from the 15th to 20th centuries. This influence persists through the exportation of mass culture, a phenomenon often referred to as Westernization.

There was debate among some in the 1960s as to whether Latin America as a whole is in a category of its own.

Culture

Plato, arguably the most influential figure in early Western philosophy.

Western culture, also known as Western civilization, European civilization, Occidental culture, Western society, or simply the West, refers to the internally diverse culture of the Western world. The term "Western" encompasses the social norms, ethical values, traditional customs, belief systems, political systems, artifacts and technologies primarily rooted in European and Mediterranean histories. A broad concept, "Western culture" does not relate to a region with fixed members or geographical confines. It generally refers to the classical era cultures of Ancient Greece, Ancient Rome, and their Christian successors that expanded across the Mediterranean basin and Europe, and later circulated around the world predominantly through colonization and globalization.

Historically, scholars have closely associated the idea of Western culture with the classical era of Greco-Roman antiquity. However, scholars also acknowledge that other cultures, like Ancient Egypt, the Phoenician city-states, and several Near-Eastern cultures stimulated and influenced it. The Hellenistic period also promoted syncretism, blending Greek, Roman, and Jewish cultures. Major advances in literature, engineering, and science shaped the Hellenistic Jewish culture from which the earliest Christians and the Greek New Testament emerged. The eventual Christianization of Europe in late-antiquity would ensure that Christianity, particularly the Catholic Church, remained a dominant force in Western culture for many centuries to follow.

Western culture continued to develop during the Middle Ages as reforms triggered by the medieval renaissances, the influence of the Islamic world via Al-Andalus and Sicily (including the transfer of technology from the East, and Latin translations of Arabic texts on science and philosophy by Greek and Hellenic-influenced Islamic philosophers), and the Italian Renaissance as Greek scholars fleeing the fall of Constantinople brought ancient Greek and Roman texts back to central and western Europe. Medieval Christianity is credited with creating the modern university, the modern hospital system, scientific economics, and natural law (which would later influence the creation of international law). European culture developed a complex range of philosophy, medieval scholasticism, mysticism and Christian and secular humanism, setting the stage for the Protestant Reformation in the 16th century, which fundamentally altered religious and political life. Led by figures like Martin Luther, Protestantism challenged the authority of the Catholic Church and promoted ideas of individual freedom and religious reform, paving the way for modern notions of personal responsibility and governance.

The Enlightenment in the 17th and 18th centuries shifted focus to reason, science, and individual rights, influencing revolutions across Europe and the Americas and the development of modern democratic institutions. Enlightenment thinkers advanced ideals of political pluralism and empirical inquiry, which, together with the Industrial Revolution, transformed Western society. In the 19th and 20th centuries, the influence of Enlightenment rationalism continued with the rise of secularism and liberal democracy, while the Industrial Revolution fueled economic and technological growth. The expansion of rights movements and the decline of religious authority marked significant cultural shifts. Tendencies that have come to define modern Western societies include the concept of political pluralism, individualism, prominent subcultures or countercultures, and increasing cultural syncretism resulting from globalization and immigration.

Historical divisions

The west of the Mediterranean region during Antiquity

The geopolitical divisions in Europe that created a concept of East and West originated in the ancient tyrannical and imperialistic Graeco-Roman times. The Eastern Mediterranean was home to the highly urbanized cultures that had Greek as their common language (owing to the older empire of Alexander the Great and of the Hellenistic successors), whereas the West was much more rural in its character and more readily adopted Latin as its common language. After the fall of the Western Roman Empire and the beginning of medieval times (or Middle Ages), Western and Central Europe were substantially cut off from the East, where Byzantine Greek culture and Eastern Christianity became founding influences in the Eastern European world such as the East and South Slavic peoples.

The main travels of the Age of Discovery (began in 15th century)

Roman Catholic Western and Central Europe thus maintained a distinct identity, particularly as it began to redevelop during the Renaissance. Even following the Protestant Reformation, Protestant Europe continued to see itself as more tied to Roman Catholic Europe than other parts of the perceived "civilized world". Use of the term West as a specific cultural and geopolitical term developed over the course of the Age of Exploration as Europe spread its culture to other parts of the world. Roman Catholics were the first major religious group to migrate to the New World, as settlers in the colonies of Spain and Portugal (and later, France) belonged to that faith. English and Dutch colonies, on the other hand, tended to be more religiously diverse. Settlers to these colonies included Anglicans, Dutch Calvinists, English Puritans and other nonconformists, English Catholics, Scottish Presbyterians, French Huguenots, German and Swedish Lutherans, as well as Quakers, Mennonites, Amish, and Moravians.

Ancient Roman world (6th century BC – AD 395–476)

The Roman Republic in 218 BC after having managed the conquest of most of the Italian Peninsula, on the eve of its most successful and deadliest war with the Carthaginians
Graphical map of post-AD 395 Roman Empire highlighting differences between western Roman Catholic and eastern Greek Orthodox parts, on the eve of the death of last emperor to rule on both the western and eastern halves. The concept of "East-West" originated in the cultural division between Christian Churches. Western and Eastern Roman Empires on the eve of Western collapse in September of AD 476.
The Roman Empire in AD 117. During 350 years the Roman Republic turned into an Empire expanding up to twenty-five times its area.

Ancient Rome (6th century BC – AD 476) is a term to describe the ancient Roman society that conquered Central Italy assimilating the Italian Etruscan culture, growing from the Latium region since about the 8th century BC, to a massive empire straddling the Mediterranean Sea. In its 10-centuries territorial expansion, Roman civilization shifted from a small monarchy (753–509 BC), to a republic (509–27 BC), into an autocratic empire (27 BC – AD 476). Its Empire came to dominate Western, Central and Southeastern Europe, Northern Africa and, becoming an autocratic Empire a vast Middle Eastern area, when it ended. Conquest was enforced using the Roman legions and then through cultural assimilation by eventual recognition of some form of Roman citizenship's privileges. Nonetheless, despite its great legacy, a number of factors led to the eventual decline and ultimately fall of the Roman Empire.

The Roman Empire succeeded the approximately 500-year-old Roman Republic (c. 510–30 BC). In 350 years, from the successful and deadliest war with the Phoenicians which began in 218 BC to the rule of Emperor Hadrian by AD 117, ancient Rome expanded up to twenty-five times its area. The same time passed again before its fall in AD 476. Rome had expanded long before the empire reached its zenith with the conquest of Dacia in AD 106 (modern-day Romania) under Emperor Trajan. During its territorial peak, the Roman Empire controlled about 5,000,000 square kilometres (1,900,000 sq mi) of land surface and had a population of 100 million. From the time of Caesar (100–44 BC) to the Fall of the Western Roman Empire, Rome dominated Southern Europe, the Mediterranean coast of Northern Africa and the Levant, including the ancient trade routes with population living outside. Ancient Rome has contributed greatly to the development of law, war, art, literature, architecture, technology and language in the Western world, and its history continues to have a major influence on the world today. The Latin language has been the base from which Romance languages evolved and it has been the official language of the Catholic Church and all Catholic religious ceremonies all over Europe until 1967, as well as one of, or the official language of countries such as Italy and Poland (9th–18th centuries).

Ending invasions on Roman Empire since the 2nd and throughout the 5th centuries establishing mostly Germanic kingdoms in its place

In AD 395, a few decades before its Western collapse, the Roman Empire formally split into a Western and an Eastern one, each with their own emperors, capitals, and governments, although ostensibly they still belonged to one formal Empire. The Western Roman Empire provinces eventually were replaced by Northern European Germanic ruled kingdoms in the 5th century due to civil wars, corruption, and devastating Germanic invasions from such tribes as the Huns, Goths, the Franks and the Vandals by their late expansion throughout Europe. The three-day Visigoths's AD 410 sack of Rome who had been raiding Greece not long before, a shocking time for Greco-Romans, was the first time after almost 800 years that Rome had fallen to a foreign enemy, and St. Jerome, living in Bethlehem at the time, wrote that "The City which had taken the whole world was itself taken." There followed the sack of AD 455 lasting 14 days, this time conducted by the Vandals, retaining Rome's eternal spirit through the Holy See of Rome (the Latin Church) for centuries to come. The ancient Barbarian tribes, often composed of well-trained Roman soldiers paid by Rome to guard the extensive borders, had become militarily sophisticated "Romanized barbarians", and mercilessly slaughtered the Romans conquering their Western territories while looting their possessions.

The Roman Empire is where the idea of "the West" began to emerge.

The Eastern Roman Empire, governed from Constantinople, is usually referred to as the Byzantine Empire after AD 476, the traditional date for the fall of the Roman Empire and beginning of the Early Middle Ages. The survival of the Eastern Roman Empire protected Roman legal and cultural traditions, combining them with Greek and Christian elements, for another thousand years. The name Byzantine Empire was first used centuries later, after the Byzantine Empire ended. The dissolution of the Western half, nominally ended in AD 476, but in truth a long process that ended by the rise of Catholic Gaul (modern-day France) ruling from around the year AD 800, left only the Eastern Roman Empire alive. The Eastern half continued to think of itself as the Roman Empire. The inhabitants called themselves Romans because the term "Roman" was meant to signify all Christians. The Pope crowned Charlemagne as Emperor of the Romans of the newly established Holy Roman Empire, and the West began thinking in terms of Western Latins living in the old Western Empire, and Eastern Greeks (those inside the Roman remnant of the old Eastern Empire).

The birth of the European West during the Middle Ages

Apex of Byzantine Empire's conquests (AD 527–565)

In the early 4th century, the central focus of power was on two separate imperial legacies within the Roman Empire: the older Aegean Sea Greek heritage (of Classical Greece) in the Eastern Mediterranean, and the newer most successful Tyrrhenian Sea Latin heritage (of Ancient Latium and Tuscany) in the Western Mediterranean. A turning point was Constantine the Great's decision to establish the city of Constantinople (today's Istanbul) in modern-day Turkey as the "New Rome" when he picked it as capital of his Empire (later called "Byzantine Empire" by modern historians) in AD 330.

The Byzantine Empire in AD 1025 before Christian East-West Schism

This internal conflict of legacies had possibly emerged since the assassination of Julius Caesar three centuries earlier, when Roman imperialism had just been born with the Roman Republic becoming "Roman Empire", but reached its zenith during 3rd century's many internal civil wars. This is the time when the Huns (part of the ancient Eastern European tribes named barbarians by the Romans) from modern-day Hungary penetrated into the Dalmatian (modern-day Croatia) region then originating in the following 150 years in the Roman Empire officially splitting in two halves. Also the time of the formal acceptance of Christianity as Empire's religious policy, when the Emperors began actively banning and fighting previous pagan religions.

History of the spread of Christianity: in AD 325 (dark blue) and AD 600 (blue) following Western Roman Empire's collapse under Germanic migrations.

The Eastern Roman Empire included lands south-west of the Black Sea and bordering on the Eastern Mediterranean and parts of the Adriatic Sea. This division into Eastern and Western Roman Empires was later reflected in the administration of the Roman Catholic and Eastern Greek Orthodox churches, with Rome and Constantinople debating over whether either city was the capital of Western religion.

As the Eastern (Orthodox) and Western (Catholic) churches spread their influence, the line between Eastern and Western Christianity was moving. Its movement was affected by the influence of the Byzantine empire and the fluctuating power and influence of the Catholic church in Rome. The geographic line of religious division approximately followed a line of cultural divide.

Rise of the Germanic Frankish Empire before Charlemagne's coronation in Rome

In AD 800 under Charlemagne, the Early Medieval Franks established an empire that was recognized by the Pope in Rome as the Holy Roman Empire (Latin Christian revival of the ancient Roman Empire, under perpetual Germanic rule from AD 962) inheriting ancient Roman Empire's prestige but offending the Eastern Roman Emperor in Constantinople, and leading to the Crusades and the East–West Schism. The crowning of the Emperor by the Pope led to the assumption that the highest power was the papal hierarchy, quintessential Roman Empire's spiritual heritage authority, establishing then, until the Protestant Reformation, the civilization of Western Christendom.

The earliest concept of Europe as a cultural sphere (instead of simple geographic term) is believed to have been formed by Alcuin of York during the Carolingian Renaissance of the 9th century, but was limited to the territories that practised Western Christianity at the time.

The Latin Church of western and central Europe split with the eastern Greek patriarchates in the Christian East–West Schism, also known as the "Great Schism", during the Gregorian Reforms (calling for a more central status of the Roman Catholic Church Institution), three months after Pope Leo IX's death in April 1054. Following the 1054 Great Schism, both the Western Church and Eastern Church continued to consider themselves uniquely orthodox and catholic. Augustine wrote in On True Religion: "Religion is to be sought... only among those who are called Catholic or orthodox Christians, that is, guardians of truth and followers of right." Over time, the Western Christianity gradually identified with the "Catholic" label, and people of Western Europe gradually associated the "Orthodox" label with Eastern Christianity (although in some languages the "Catholic" label is not necessarily identified with the Western Church). This was in note of the fact that both Catholic and Orthodox were in use as ecclesiastical adjectives as early as the 2nd and 4th centuries respectively. Meanwhile, the extent of both Christendoms expanded, as Germanic peoples, Bohemia, Poland, Hungary, Scandinavia, Finnic peoples, Baltic peoples, British Isles and the other non-Christian lands of the northwest were converted by the Western Church, while Eastern Slavic peoples, Bulgaria, Serbia, Montenegro, Russian territories, Vlachs and Georgia were converted by the Eastern Orthodox Church.

The Byzantine Empire in AD 1180 before Latin Fourth Crusade

In 1071, the Byzantine army was defeated by the Muslim Turco-Persians of medieval Asia, resulting in the loss of most of Asia Minor. The situation was a serious threat to the future of the Eastern Orthodox Byzantine Empire. The Emperor sent a plea to the Pope in Rome to send military aid to restore the lost territories to Christian rule. The result was a series of western European military campaigns into the eastern Mediterranean, known as the Crusades. Unfortunately for the Byzantines, the crusaders (belonging to the members of nobility from France, German territories, the Low countries, England and Italy) had no allegiance to the Byzantine Emperor and established their own states in the conquered regions, including the heart of the Byzantine Empire.

The Holy Roman Empire would dissolve on 6 August 1806, after the French Revolution and the creation of the Confederation of the Rhine by Napoleon.

The Greek Byzantine Empire split by a newly established Latin Crusader State after the Fourth Crusade (shown partly in Greece and partly in Turkey)

The decline of the Byzantine Empire (13th–15th centuries) began with the Latin Christian Fourth Crusade in AD 1202–04, considered to be one of the most important events, solidifying the schism between the Christian churches of Greek Byzantine Rite and Latin Roman Rite. An anti-Western riot in 1182 broke out in Constantinople targeting Latins. The extremely wealthy (after previous Crusades) Venetians in particular made a successful attempt to maintain control over the coast of Catholic present-day Croatia (specifically the Dalmatia, a region of interest to the maritime medieval Venetian Republic moneylenders and its rivals, such as the Republic of Genoa) rebelling against the Venetian economic domination. What followed dealt an irrevocable blow to the already weakened Byzantine Empire with the Crusader army's sack of Constantinople in April 1204, capital of the Greek Christian-controlled Byzantine Empire, described as one of the most profitable and disgraceful sacks of a city in history. This paved the way for Muslim conquests in present-day Turkey and the Balkans in the coming centuries (only a handful of the Crusaders followed to the stated destination thereafter, the Holy Land). The geographical identity of the Balkans is historically known as a crossroads of cultures, a juncture between the Latin and Greek bodies of the Roman Empire, the destination of a massive influx of pagans (meaning "non-Christians") Bulgars and Slavs, an area where Catholic and Orthodox Christianity met, as well as the meeting point between Islam and Christianity. The Papal Inquisition was established in AD 1229 on a permanent basis, run largely by clergymen in Rome, and abolished six centuries later. Before AD 1100, the Catholic Church suppressed what they believed to be heresy, usually through a system of ecclesiastical proscription or imprisonment, but without using torture, and seldom resorting to executions.

Martin Luther, Protestant Reformer

This very profitable Central European Fourth Crusade had prompted the 14th century Renaissance (translated as 'Rebirth') of Italian city-states including the Papal States, on eve of the Protestant Reformation and Counter-Reformation (which established the Roman Inquisition to succeed the Medieval Inquisition). There followed the discovery of the American continent, and consequent dissolution of West Christendom as even a theoretical unitary political body, later resulting in the religious Eighty Years War (1568–1648) and Thirty Years War (1618–1648) between various Protestant and Catholic states of the Holy Roman Empire (and emergence of religiously diverse confessions). In this context, the Protestant Reformation (1517) may be viewed as a schism within the Catholic Church. German monk Martin Luther, in the wake of precursors, broke with the pope and with the emperor by the Catholic Church's abusive commercialization of indulgences in the Late Medieval Period, backed by many of the German princes and helped by the development of the printing press, in an attempt to reform corruption within the church.

Both these religious wars ended with the Peace of Westphalia (1648), which enshrined the concept of the nation-state, and the principle of absolute national sovereignty in international law. As European influence spread across the globe, these Westphalian principles, especially the concept of sovereign states, became central to international law and to the prevailing world order.

Expansion of the West: the Era of Colonialism (15th–20th centuries)

Portuguese discoveries and explorations since 1336: first arrival places and dates; main Portuguese spice trade routes in the Indian Ocean (blue); territories claimed by King John III of Portugal (c. 1536) (green)
Apex of Spanish Empire in 1790

In the 13th and 14th centuries, a number of European travelers, many of them Christian missionaries, had sought to cultivate trading with Asia and Africa. With the Crusades came the relative contraction of the Orthodox Byzantine's large silk industry in favor of Catholic Western Europe and the rise of Western Papacy. The most famous of these merchant travelers pursuing East–west trade was Venetian Marco Polo. But these journeys had little permanent effect on east–west trade because of a series of political developments in Asia in the last decades of the 14th century, which put an end to further European exploration of Asia: namely the new Ming rulers were found to be unreceptive of religious proselytism by European missionaries and merchants. Meanwhile, the Ottoman Turks consolidated control over the eastern Mediterranean, closing off key overland trade routes.

The Portuguese spearheaded the drive to find oceanic routes that would provide cheaper and easier access to South and East Asian goods, by advancements in maritime technology such as the caravel ship introduced in the mid-1400s. The charting of oceanic routes between East and West began with the unprecedented voyages of Portuguese and Spanish sea captains. In 1492, European colonialism expanded across the globe with the exploring voyage of merchant, navigator, and Hispano-Italian colonizer Christopher Columbus. Such voyages were influenced by medieval European adventurers after the European spice trade with Asia, who had journeyed overland to the Far East contributing to geographical knowledge of parts of the Asian continent. They are of enormous significance in Western history as they marked the beginning of the European exploration, colonization and exploitation of the American continents and their native inhabitants. The European colonization of the Americas led to the Atlantic slave trade between the 1490s and the 1800s, which also contributed to the development of African intertribal warfare and racist ideology. Before the abolition of its slave trade in 1807, the British Empire alone (which had started colonial efforts in 1578, almost a century after Portuguese and Spanish empires) was responsible for the transportation of 3.5 million African slaves to the Americas, a third of all slaves transported across the Atlantic. The Holy Roman Empire was dissolved in 1806 by the French Revolutionary Wars; abolition of the Roman Catholic Inquisition followed.

Due to the reach of these empires, Western institutions expanded throughout the world. This process of influence (and imposition) began with the voyages of discovery, colonization, conquest, and exploitation of Portugal enforced as well by papal bulls in 1450s (by the fall of the Byzantine Empire), granting Portugal navigation, war and trade monopoly for any newly discovered lands, and competing Spanish navigators. It continued with the rise of the Dutch East India Company by the destabilizing Spanish discovery of the New World, and the creation and expansion of the English and French colonial empires, and others. Even after demands for self-determination from subject peoples within Western empires were met with decolonization, these institutions persisted. One specific example was the requirement that post-colonial societies were made to form nation-states (in the Western tradition), which often created arbitrary boundaries and borders that did not necessarily represent a whole nation, people, or culture (as in much of Africa), and are often the cause of international conflicts and friction even to this day. Although not part of Western colonization process proper, following the Middle Ages Western culture in fact entered other global-spanning cultures during the colonial 15th–20th centuries. Historically colonialism had been justified with the values of individualism and enlightenment.

The concepts of a world of nation-states born by the Peace of Westphalia in 1648, coupled with the ideologies of the Enlightenment, the coming of modernity, the Scientific Revolution and the Industrial Revolution, would produce powerful social transformations, political and economic institutions that have come to influence (or been imposed upon) most nations of the world today. Historians agree that the Industrial Revolution has been one of the most important events in history.

The course of three centuries since Christopher Columbus' late 15th century's voyages, of deportation of slaves from Africa and British dominant northern-Atlantic location, later developed into modern-day United States of America, evolving from the ratification of the Constitution of the United States by thirteen States on the North American East Coast before end of the 18th century.

Enlightenment (17th–18th centuries)

Eric Voegelin described the 18th-century as one where "the sentiment grows that one age has come to its close and that a new age of Western civilization is about to be born". According to Voeglin the Enlightenment (also called the Age of Reason) represents the "atrophy of Christian transcendental experiences and [seeks] to enthrone the Newtonian method of science as the only valid method of arriving at truth". Its precursors were John Milton and Baruch Spinoza. Meeting Galileo in 1638 left an enduring impact on John Milton and influenced Milton's great work Areopagitica, where he warns that, without free speech, inquisitorial forces will impose "an undeserved thraldom upon learning".

The achievements of the 17th century included the invention of the telescope and acceptance of heliocentrism. 18th century scholars continued to refine Newton's theory of gravitation, notably Leonhard Euler, Pierre Louis Maupertuis, Alexis-Claude Clairaut, Jean Le Rond d'Alembert, Joseph-Louis Lagrange, Pierre-Simon de Laplace. Laplace's five-volume Treatise on Celestial Mechanics is one of the great works of 18th-century Newtonianism. Astronomy gained in prestige as new observatories were funded by governments and more powerful telescopes developed, leading to the discovery of new planets, asteroids, nebulae and comets, and paving the way for improvements in navigation and cartography. Astronomy became the second most popular scientific profession, after medicine.

A common metanarrative of the Enlightenment is the "secularization theory". Modernity, as understood within the framework, means a total break with the past. Innovation and science are the good, representing the modern values of rationalism, while faith is ruled by superstition and traditionalism. Inspired by the Scientific Revolution, the Enlightenment embodied the ideals of improvement and progress. Descartes and Isaac Newton were regarded as exemplars of human intellectual achievement. Condorcet wrote about the progress of humanity in the Sketch of the Progress of the Human Mind (1794), from primitive society to agrarianism, the invention of writing, the later invention of the printing press and the advancement to "the Period when the Sciences and Philosophy threw off the Yoke of Authority".

French writer Pierre Bayle denounced Spinoza as a pantheist (thereby accusing him of atheism). Bayle's criticisms garnered much attention for Spinoza. The pantheism controversy in the late 18th century saw Gotthold Lessing attacked by Friedrich Heinrich Jacobi over support for Spinoza's pantheism. Lessing was defended by Moses Mendelssohn, although Mendelssohn diverged from pantheism to follow Gottfried Wilhelm Leibniz in arguing that God and the world were not of the same substance (equivalency). Spinoza was excommunicated from the Dutch Sephardic community, but for Jews who sought out Jewish sources to guide their own path to secularism, Spinoza was as important as Voltaire and Kant.

19th century

In the early 19th century, the systematic urbanization process (migration from villages in search of jobs in manufacturing centers) had begun, and the concentration of labor into factories led to the rise in the population of the towns. World population had been rising as well. It is estimated to have first reached one billion in 1804. Also, the new philosophical movement later known as Romanticism originated, in the wake of the previous Age of Reason of the 1600s and the Enlightenment of 1700s. These are seen as fostering the 19th century Western world's sustained economic development. Before the urbanization and industrialization of the 1800s, demand for oriental goods such as porcelain, silk, spices and tea remained the driving force behind European imperialism in Asia, and (with the important exception of British East India Company rule in India) the European stake in Asia remained confined largely to trading stations and strategic outposts necessary to protect trade. Industrialization, however, dramatically increased European demand for Asian raw materials; and the severe Long Depression of the 1870s provoked a scramble for new markets for European industrial products and financial services in Africa, the Americas, Eastern Europe, and especially in Asia (Western powers exploited their advantages in China for example by the Opium Wars). This resulted in the "New Imperialism", which saw a shift in focus from trade and indirect rule to formal colonial control of vast overseas territories ruled as political extensions of their mother countries. The later years of the 19th century saw the transition from "informal imperialism" (hegemony) by military influence and economic dominance, to direct rule (a revival of colonial imperialism) in the African continent and Middle East.

During the socioeconomically optimistic and innovative decades of the Second Industrial Revolution between the 1870s and 1914, also known as the "Beautiful Era", the established colonial powers in Asia (United Kingdom, France, Netherlands) added to their empires also vast expanses of territory in the Indian Subcontinent and Southeast Asia. Japan was involved primarily during the Meiji period (1868–1912), though earlier contacts with the Portuguese, Spaniards and Dutch were also present in the Japanese Empire's recognition of the strategic importance of European nations. Traditional Japanese society became an industrial and militarist power like the Western British Empire and the French Third Republic, and similar to the German Empire.

At the close of the Spanish–American War in 1898 the Philippines, Puerto Rico, Guam and Cuba were ceded to the United States under the terms of the Treaty of Paris. The US quickly emerged as the new imperial power in East Asia and in the Pacific Ocean area. The Philippines continued to fight against colonial rule in the Philippine–American War.

By 1913, the British Empire held sway over 412 million people, 23% of the world population at the time, and by 1920, it covered 35,500,000 km2 (13,700,000 sq mi), 24% of the Earth's total land area. At its apex, the phrase "the empire on which the sun never sets" described the British Empire, because its expanse around the globe meant that the sun always shone on at least one of its territories. As a result, its political, legal, linguistic and cultural legacy is widespread throughout the Western world. In the aftermath of the Second World War, decolonizing efforts were employed by all Western powers under United Nations (ex-League of Nations) international directives. Most of colonized nations received independence by 1960. Great Britain showed ongoing responsibility for the welfare of its former colonies as member states of the Commonwealth of Nations. But the end of Western colonial imperialism saw the rise of Western neocolonialism or economic imperialism. Multinational corporations came to offer "a dramatic refinement of the traditional business enterprise", through "issues as far ranging as national sovereignty, ownership of the means of production, environmental protection, consumerism, and policies toward organized labor." Though the overt colonial era had passed, Western nations, as comparatively rich, well-armed, and culturally powerful states, wielded a large degree of influence throughout the world, and with little or no sense of responsibility toward the peoples impacted by its multinational corporations in their exploitation of minerals and markets. The dictum of Alfred Thayer Mahan is shown to have lasting relevance, that whoever controls the seas controls the world.

Cold War (1947–1991)

During the Cold War, a new definition emerged. Earth was divided into three "worlds". The First World, analogous in this context to what was called the West, was composed of NATO members and other countries aligned with the United States.

The Second World was the Eastern bloc in the Soviet sphere of influence, including the Soviet Union (15 republics including the then occupied but now independent Estonia, Latvia, Lithuania) and Warsaw Pact countries like Poland, Bulgaria, Hungary, Romania, East Germany (now united with West Germany), and Czechoslovakia (now split into the Czech Republic and Slovakia).

The Third World consisted of countries, many of which were unaligned with either the west or the east; important members included India, Yugoslavia, Finland (Finlandization) and Switzerland (Swiss Neutrality); some include the People's Republic of China, though this is disputed, since the People's Republic of China, as communist, had friendly relations—at certain times—with the Soviet bloc, and had a significant degree of importance in global geopolitics. Some Third World countries aligned themselves with either the US-led West or the Soviet-led Eastern bloc.

A number of countries did not fit comfortably into this neat definition of partition, including Switzerland, Sweden, Austria, and Ireland, which chose to be neutral. Finland was under the Soviet Union's military sphere of influence (see FCMA treaty) but remained neutral and was not communist, nor was it a member of the Warsaw Pact or Comecon but a member of the EFTA from 1986, and was west of the Iron Curtain. In 1955, when Austria again became a fully independent republic, it did so under the condition that it remain neutral; but as a country to the west of the Iron Curtain, it was in the United States' sphere of influence. Spain did not join NATO until 1982, seven years after the death of the authoritarian Franco.

The 1980s advent of Mikhail Gorbachev led to the end of the Cold War following the dissolution of the Soviet Union.

Modern definitions

Asia (as the "Eastern world"), the Arab world, and Africa

The exact scope of the Western world is somewhat subjective in nature, depending on whether cultural, economic, spiritual or political criteria are employed. It is a generally accepted Western view to recognize the existence of at least three "major worlds" (or "cultures", or "civilizations"), broadly in contrast with the Western: the Eastern world, the Arab and the African worlds, with no clearly specified boundaries. Additionally, Latin American and Orthodox European worlds are sometimes either a sub-civilization within Western civilization or separately considered "akin" to the West.

Many anthropologists, sociologists and historians oppose "the West and the Rest" in a categorical manner. The same has been done by Malthusian demographers with a sharp distinction between European and non-European family systems. Among anthropologists, this includes Durkheim, Dumont, and Lévi-Strauss.

Cultural definition

The Oxford English dictionary noted that the earliest use of the term "Western world" in the English language was in 1586, found in the writings of William Warner.

In modern usage, Western world refers to Europe and to areas whose populations largely originate from Europe, through the Age of Discovery's imperialism.

In the 20th century, Christianity declined in influence in many Western countries, mostly in the European Union where some member states have experienced falling church attendance and membership in recent years, and also elsewhere. Secularism (separating religion from politics and science) increased. However, while church attendance is in decline, in some Western countries (i.e. Italy, Poland, and Portugal), more than half of the people state that religion is important, and most Westerners nominally identify themselves as Christians (e.g. 59% in the United Kingdom) and attend church on major occasions, such as Christmas and Easter. In the Americas, Christianity continues to play an important societal role, though in areas such as Canada, a low level of religiosity is common due to a European-type secularization. The official religions of the United Kingdom and some Nordic countries are forms of Christianity, while the majority of European countries have no official religion. Despite this, Christianity, in its different forms, remains the largest faith in most Western countries.

Christianity remains the dominant religion in the Western world, where 70% are Christians. A 2011 Pew Research Center survey found that 76.2% of Europeans, 73.3% in Oceania, and about 86.0% in the Americas (90% in Latin America and the Caribbean and 77.4% in Northern America) described themselves as Christians.

Since the mid-twentieth century, the west became known for its irreligious sentiments, following the Age of Enlightenment and the French Revolution, inquisitions were abolished in the 19th and 20th centuries, this hastened the separation of church and state, and secularization of the Western world where unchurched spirituality is gaining more prominence over organized religion.

Certain parts of the Western world have become notable for their diversity since the late 1960s. Earlier, between the eighteenth century to mid-twentieth century, prominent western countries like the United States, Canada, Brazil, Argentina, Australia, and New Zealand have been once envisioned as homelands for whitesRacism has been noted as a contributing factor to Westerners' colonization of the New World, which makes up much of the geographical West today.

Countries in the Western world are also the most keen on digital and televisual media technologies, as they were in the postwar period on television and radio: from 2000 to 2014, the Internet's market penetration in the West was twice that in non-Western regions.

Economic definition

Countries by income group
Map of the Western world consisting of the anglosphere (as defined by James Bennett), the European Union and European Single Market members, 2017

The term "Western world" is sometimes interchangeably used with the term First World or developed countries, stressing the difference between First World and the Third World or developing countries. This usage occurs despite the fact that many countries that may be culturally Western are developing countries – in fact, a significant percentage of the Americas are developing countries. It is also used despite many developed countries or regions not being culturally Western (e.g. Japan, Singapore, South Korea, Taiwan, Hong Kong, and Macao). Privatization policies (involving government enterprises and public services) and multinational corporations are often considered a visible sign of Western nations' economic presence, especially in Third World countries, and represent a common institutional environment for powerful politicians, enterprises, trade unions and firms, bankers and thinkers of the Western world.

Other views

A series of scholars of civilization, including Arnold J. Toynbee, Alfred Kroeber and Carroll Quigley have identified and analyzed "Western civilization" as one of the civilizations that have historically existed and still exist today. Toynbee entered into quite an expansive mode, including as candidates those countries or cultures who became so heavily influenced by the West as to adopt these borrowings into their very self-identity. Carried to its limit, this would in practice include almost everyone within the West, in one way or another. In particular, Toynbee refers to the intelligentsia formed among the educated elite of countries impacted by the European expansion of centuries past. While often pointedly nationalist, these cultural and political leaders interacted within the West to such an extent as to change both themselves and the West.

The theologian and paleontologist Pierre Teilhard de Chardin conceived of the West as the set of civilizations descended from the Nile Valley Civilization of Egypt.

Palestinian-American literary critic Edward Said uses the term "Occident" in his discussion of Orientalism. According to his binary, the West, or Occident, created a romanticized vision of the East, or Orient, to justify colonial and imperialist intentions. This Occident-Orient binary focuses on the Western vision of the East instead of any truths about the East. His theories are rooted in Hegel's master-slave dialectic: The Occident would not exist without the Orient and vice versa. Further, Western writers created this irrational, feminine, weak "Other" to contrast with the rational, masculine, strong West because of a need to create a difference between the two that would justify imperialist ambitions, according to the Said-influenced Indian-American theorist Homi K. Bhabha.

The idea of "the West" over the course of time has evolved from a directional concept to a sociopolitical concept, and has been temporalized and rendered as a concept of the future bestowed with notions of progress and modernity.

What a piece of work is a man

"What a piece of work is a man!" is a phrase within a monologue by Prince Hamlet in William Shakespeare's play Hamlet. Hamlet is reflecting, at first admiringly, and then despairingly, on the human condition. The speech is recited at the end of the film Withnail and I and the text was set to music by Galt MacDermot for the rock opera Hair.

The speech

The monologue, spoken in the play by Prince Hamlet to Rosencrantz and Guildenstern in Act II, Scene 2, follows in its entirety. Rather than appearing in blank verse, the typical mode of composition of Shakespeare's plays, the speech appears in straight prose:

I will tell you why; so shall my anticipation prevent your discovery, and your secrecy to the King and queene: moult no feather. I have of late, (but wherefore I know not) lost all my mirth, forgone all custom of exercises; and indeed, it goes so heavily with my disposition; that this goodly frame the earth, seems to me a sterile promontory; this most excellent canopy the air, look you, this brave o'er hanging firmament, this majestical roof, fretted with golden fire: why, it appeareth no other thing to me, than a foul and pestilent congregation of vapours. What a piece of work is a man, How noble in reason, how infinite in faculty, In form and moving how express and admirable, In action how like an Angel, In apprehension how like a god, The beauty of the world, The paragon of animals. And yet to me, what is this quintessence of dust? Man delights not me; no, nor Woman neither; though by your smiling you seem to say so.

Differences between texts

The speech was fully omitted from Nicholas Ling's 1603 First Quarto, which reads simply:

Yes faith, this great world you see contents me not,
No nor the spangled heauens, nor earth, nor sea,
No nor Man that is so glorious a creature,
Contents not me, no nor woman too, though you laugh.

This version has been argued to have been a bad quarto, a tourbook copy, or an initial draft. By the 1604 Second Quarto, the speech is essentially present but punctuated differently:

What piece of work is a man, how noble in reason,
how infinite in faculties, in form and moving,
how express and admirable in action, how like an angel in apprehension,
how like a god!

Then, by the 1623 First Folio, it appeared as:

What a piece of worke is a man! how Noble in
Reason? how infinite in faculty? in forme and mouing
how expresse and admirable? in Action, how like an Angel?
in apprehension, how like a God? ...

J. Dover Wilson, in his notes in the New Shakespeare edition, observed that the Folio text "involves two grave difficulties", namely that according to Elizabethan thought angels could apprehend but not act, making "in action how like an angel" nonsensical, and that "express" (which as an adjective means "direct and purposive") makes sense applied to "action", but goes very awkwardly with "form and moving".

These difficulties are remedied if we read it thus:

What a piece of worke is a man! how Noble in
Reason? how infinite in faculty, in forme, and mouing
how expresse and admirable in Action, how like an Angel
in apprehension, how like a God?

Sources

A source well known to Shakespeare is Psalm 8, especially verse 5: "You have made [humans] a little lower than the heavenly beings and crowned them with glory and honor."

Scholars have pointed out this section's similarities to lines written by Montaigne:

Qui luy a persuadé que ce branle admirable de la voute celeste, la lumiere eternelle de ces flambeaux roulans si fierement sur sa teste, les mouvemens espouventables de ceste mer infinie, soyent establis et se continuent tant de siecles, pour sa commodité et pour son service ? Est-il possible de rien imaginer si ridicule, que ceste miserable et chetive creature, qui n’est pas seulement maistresse de soy, exposée aux offences de toutes choses, se die maistresse et emperiere de l’univers?

Who have persuaded [man] that this admirable moving of heavens vaults, that the eternal light of these lampes so fiercely rowling over his head, that the horror-moving and continuall motion of this infinite vaste ocean were established, and continue so many ages for his commoditie and service? Is it possible to imagine so ridiculous as this miserable and wretched creature, which is not so much as master of himselfe, exposed and subject to offences of all things, and yet dareth call himself Master and Emperor.

However, rather than being a direct influence on Shakespeare, Montaigne may have merely been reacting to the same general atmosphere of the time, making the source of these lines one of context rather than direct influence.

Conway's Game of Life

From Wikipedia, the free encyclopedia
A single Gosper's glider gun creating gliders
A screenshot of a puffer-type breeder (red) that leaves glider guns (green) in its wake, which in turn create gliders (blue) (animation)

The Game of Life, also known as Conway's Game of Life or simply Life, is a cellular automaton devised by the British mathematician John Horton Conway in 1970. It is a zero-player game, meaning that its evolution is determined by its initial state, requiring no further input. One interacts with the Game of Life by creating an initial configuration and observing how it evolves. It is Turing complete and can simulate a universal constructor or any other Turing machine.

Rules

The universe of the Game of Life is an infinite, two-dimensional orthogonal grid of square cells, each of which is in one of two possible states, live or dead (or populated and unpopulated, respectively). Every cell interacts with its eight neighbours, which are the cells that are horizontally, vertically, or diagonally adjacent. At each step in time, the following transitions occur:

  1. Any live cell with fewer than two live neighbours dies, as if by underpopulation.
  2. Any live cell with two or three live neighbours lives on to the next generation.
  3. Any live cell with more than three live neighbours dies, as if by overpopulation.
  4. Any dead cell with exactly three live neighbours becomes a live cell, as if by reproduction.

The initial pattern constitutes the seed of the system. The first generation is created by applying the above rules simultaneously to every cell in the seed, live or dead; births and deaths occur simultaneously, and the discrete moment at which this happens is sometimes called a tick. Each generation is a pure function of the preceding one. The rules continue to be applied repeatedly to create further generations.

Origins

Stanisław Ulam, while working at the Los Alamos National Laboratory in the 1940s, studied the growth of crystals, using a simple lattice network as his model. At the same time, John von Neumann, Ulam's colleague at Los Alamos, was working on the problem of self-replicating systems. Von Neumann's initial design was founded upon the notion of one robot building another robot. This design is known as the kinematic model. As he developed this design, von Neumann came to realize the great difficulty of building a self-replicating robot, and of the great cost in providing the robot with a "sea of parts" from which to build its replicant. Von Neumann wrote a paper entitled "The general and logical theory of automata" for the Hixon Symposium in 1948. Ulam was the one who suggested using a discrete system for creating a reductionist model of self-replication. Ulam and von Neumann created a method for calculating liquid motion in the late 1950s. The driving concept of the method was to consider a liquid as a group of discrete units and calculate the motion of each based on its neighbours' behaviours. Thus was born the first system of cellular automata. Like Ulam's lattice network, von Neumann's cellular automata are two-dimensional, with his self-replicator implemented algorithmically. The result was a universal copier and constructor working within a cellular automaton with a small neighbourhood (only those cells that touch are neighbours; for von Neumann's cellular automata, only orthogonal cells), and with 29 states per cell. Von Neumann gave an existence proof that a particular pattern would make endless copies of itself within the given cellular universe by designing a 200,000 cell configuration that could do so. This design is known as the tessellation model, and is called a von Neumann universal constructor.

Motivated by questions in mathematical logic and in part by work on simulation games by Ulam, among others, John Conway began doing experiments in 1968 with a variety of different two-dimensional cellular automaton rules. Conway's initial goal was to define an interesting and unpredictable cellular automaton. According to Martin Gardner, Conway experimented with different rules, aiming for rules that would allow for patterns to "apparently" grow without limit, while keeping it difficult to prove that any given pattern would do so. Moreover, some "simple initial patterns" should "grow and change for a considerable period of time" before settling into a static configuration or a repeating loop. Conway later wrote that the basic motivation for Life was to create a "universal" cellular automaton.

The game made its first public appearance in the October 1970 issue of Scientific American, in Martin Gardner's "Mathematical Games" column, which was based on personal conversations with Conway. Theoretically, the Game of Life has the power of a universal Turing machine: anything that can be computed algorithmically can be computed within the Game of Life. Gardner wrote, "Because of Life's analogies with the rise, fall, and alterations of a society of living organisms, it belongs to a growing class of what are called 'simulation games' (games that resemble real-life processes)."

Since its publication, the Game of Life has attracted much interest because of the surprising ways in which the patterns can evolve. It provides an example of emergence and self-organization. A version of Life that incorporates random fluctuations has been used in physics to study phase transitions and nonequilibrium dynamics. The game can also serve as a didactic analogy, used to convey the somewhat counter-intuitive notion that design and organization can spontaneously emerge in the absence of a designer. For example, philosopher Daniel Dennett has used the analogy of the Game of Life "universe" extensively to illustrate the possible evolution of complex philosophical constructs, such as consciousness and free will, from the relatively simple set of deterministic physical laws which might govern our universe.

The popularity of the Game of Life was helped by its coming into being at the same time as increasingly inexpensive computer access. The game could be run for hours on these machines, which would otherwise have remained unused at night. In this respect, it foreshadowed the later popularity of computer-generated fractals. For many, the Game of Life was simply a programming challenge: a fun way to use otherwise wasted CPU cycles. For some, however, the Game of Life had more philosophical connotations. It developed a cult following through the 1970s and beyond; current developments have gone so far as to create theoretic emulations of computer systems within the confines of a Game of Life board.

Examples of patterns

Many different types of patterns occur in the Game of Life, which are classified according to their behaviour. Common pattern types include: still lifes, which do not change from one generation to the next; oscillators, which return to their initial state after a finite number of generations; and spaceships, which translate themselves across the grid.

The earliest interesting patterns in the Game of Life were discovered without the use of computers. The simplest still lifes and oscillators were discovered while tracking the fates of various small starting configurations using graph paper, blackboards, and physical game boards, such as those used in Go. During this early research, Conway discovered that the R-pentomino failed to stabilize in a small number of generations. In fact, it takes 1103 generations to stabilize, by which time it has a population of 116 and has generated six escaping gliders; these were the first spaceships ever discovered.

Frequently occurring examples (in that they emerge frequently from a random starting configuration of cells) of the three aforementioned pattern types are shown below, with live cells shown in black and dead cells in white. Period refers to the number of ticks a pattern must iterate through before returning to its initial configuration.

The pulsar is the most common period-3 oscillator. The great majority of naturally occurring oscillators have a period of 2, like the blinker and the toad, but oscillators of all periods are known to exist, and oscillators of periods 4, 8, 14, 15, 30, and a few others have been seen to arise from random initial conditions. Patterns which evolve for long periods before stabilizing are called Methuselahs, the first-discovered of which was the R-pentomino. Diehard is a pattern that disappears after 130 generations. Starting patterns of eight or more cells can be made to die after an arbitrarily long time. Acorn takes 5,206 generations to generate 633 cells, including 13 escaped gliders.

The R-pentomino
Diehard
Acorn

Conway originally conjectured that no pattern can grow indefinitely—i.e. that for any initial configuration with a finite number of living cells, the population cannot grow beyond some finite upper limit. In the game's original appearance in "Mathematical Games", Conway offered a prize of fifty dollars (equivalent to $400 in 2024) to the first person who could prove or disprove the conjecture before the end of 1970. The prize was won in November by a team from the Massachusetts Institute of Technology, led by Bill Gosper; the "Gosper glider gun" produces its first glider on the 15th generation, and another glider every 30th generation from then on. For many years, this glider gun was the smallest one known. In 2015, a gun called the "Simkin glider gun", which releases a glider every 120th generation, was discovered that has fewer live cells but which is spread out across a larger bounding box at its extremities.

Gosper glider gun
Simkin glider gun

Smaller patterns were later found that also exhibit infinite growth. All three of the patterns shown below grow indefinitely. The first two create a single block-laying switch engine: a configuration that leaves behind two-by-two still life blocks as it translates itself across the game's universe. The third configuration creates two such patterns. The first has only ten live cells, which has been proven to be minimal. The second fits in a five-by-five square, and the third is only one cell high.


Later discoveries included other guns, which are stationary, and which produce gliders or other spaceships; puffer trains, which move along leaving behind a trail of debris; and rakes, which move and emit spaceships. Gosper also constructed the first pattern with an asymptotically optimal quadratic growth rate, called a breeder or lobster, which worked by leaving behind a trail of guns.

It is possible for gliders to interact with other objects in interesting ways. For example, if two gliders are shot at a block in a specific position, the block will move closer to the source of the gliders. If three gliders are shot in just the right way, the block will move farther away. This sliding block memory can be used to simulate a counter. It is possible to construct logic gates such as AND, OR, and NOT using gliders. It is possible to build a pattern that acts like a finite-state machine connected to two counters. This has the same computational power as a universal Turing machine, so the Game of Life is theoretically as powerful as any computer with unlimited memory and no time constraints; it is Turing complete. In fact, several different programmable computer architectures have been implemented in the Game of Life, including a pattern that simulates Tetris.

Oblique spaceships

Until the 2010s, all known spaceships could only move orthogonally or diagonally. Spaceships which move neither orthogonally nor diagonally are commonly referred to as oblique spaceships. On May 18, 2010, Andrew J. Wade announced the first oblique spaceship, dubbed "Gemini", that creates a copy of itself on (5,1) further while destroying its parent. This pattern replicates in 34 million generations, and uses an instruction tape made of gliders oscillating between two stable configurations made of Chapman–Greene construction arms. These, in turn, create new copies of the pattern, and destroy the previous copy. In December 2015, diagonal versions of the Gemini were built.

A more specific case is a knightship, a spaceship that moves two squares left for every one square it moves down (like a knight in chess), whose existence had been predicted by Elwyn Berlekamp since 1982. The first elementary knightship, Sir Robin, was discovered in 2018 by Adam P. Goucher. This is the first new spaceship movement pattern for an elementary spaceship found in forty-eight years. "Elementary" means that it cannot be decomposed into smaller interacting patterns such as gliders and still lifes.

Self-replication

A pattern can contain a collection of guns that fire gliders in such a way as to construct new objects, including copies of the original pattern. A universal constructor can be built which contains a Turing complete computer, and which can build many types of complex objects, including more copies of itself. On November 23, 2013, Dave Greene built the first replicator in the Game of Life that creates a complete copy of itself, including the instruction tape. In October 2018, Adam P. Goucher finished his construction of the 0E0P metacell, a metacell capable of self-replication. This differed from previous metacells, such as the OTCA metapixel by Brice Due, which only worked with already constructed copies near them. The 0E0P metacell works by using construction arms to create copies that simulate the programmed rule. The actual simulation of the Game of Life or other Moore neighbourhood rules is done by simulating an equivalent rule using the von Neumann neighbourhood with more states. The name 0E0P is short for "Zero Encoded by Zero Population", which indicates that instead of a metacell being in an "off" state simulating empty space, the 0E0P metacell removes itself when the cell enters that state, leaving a blank space.

Undecidability

Many patterns in the Game of Life eventually become a combination of still lifes, oscillators, and spaceships; other patterns may be called chaotic. A pattern may stay chaotic for a very long time until it eventually settles to such a combination.

The Game of Life is undecidable, which means that given an initial pattern and a later pattern, no algorithm exists that can tell whether the later pattern is ever going to appear. Given that the Game of Life is Turing-complete, this is a corollary of the halting problem: the problem of determining whether a given program will finish running or continue to run forever from an initial input.

Iteration

From most random initial patterns of living cells on the grid, observers will find the population constantly changing as the generations tick by. The patterns that emerge from the simple rules may be considered a form of mathematical beauty. Small isolated subpatterns with no initial symmetry tend to become symmetrical. Once this happens, the symmetry may increase in richness, but it cannot be lost unless a nearby subpattern comes close enough to disturb it. In a very few cases, the society eventually dies out, with all living cells vanishing, though this may not happen for a great many generations. Most initial patterns eventually burn out, producing either stable figures or patterns that oscillate forever between two or more states; many also produce one or more gliders or spaceships that travel indefinitely away from the initial location. Because of the nearest-neighbour based rules, no information can travel through the grid at a greater rate than one cell per unit time, so this velocity is said to be the cellular automaton speed of light and denoted c.

Algorithms

Early patterns with unknown futures, such as the R-pentomino, led computer programmers to write programs to track the evolution of patterns in the Game of Life. Most of the early algorithms were similar: they represented the patterns as two-dimensional arrays in computer memory. Typically, two arrays are used: one to hold the current generation, and one to calculate its successor. Often 0 and 1 represent dead and live cells, respectively. A nested for loop considers each element of the current array in turn, counting the live neighbours of each cell to decide whether the corresponding element of the successor array should be 0 or 1. The successor array is displayed. For the next iteration, the arrays may swap roles so that the successor array in the last iteration becomes the current array in the next iteration, or one may copy the values of the second array into the first array then update the second array from the first array again.

A variety of minor enhancements to this basic scheme are possible, and there are many ways to save unnecessary computation. A cell that did not change at the last time step, and none of whose neighbours changed, is guaranteed not to change at the current time step as well, so a program that keeps track of which areas are active can save time by not updating inactive zones.

Game of Life on the surface of a trefoil knot
The Game of Life on the surface of a toroidal trefoil knot

To avoid decisions and branches in the counting loop, the rules can be rearranged from an egocentric approach of the inner field regarding its neighbours to a scientific observer's viewpoint: if the sum of all nine fields in a given neighbourhood is three, the inner field state for the next generation will be life; if the all-field sum is four, the inner field retains its current state; and every other sum sets the inner field to death.

To save memory, the storage can be reduced to one array plus two line buffers. One line buffer is used to calculate the successor state for a line, then the second line buffer is used to calculate the successor state for the next line. The first buffer is then written to its line and freed to hold the successor state for the third line. If a toroidal array is used, a third buffer is needed so that the original state of the first line in the array can be saved until the last line is computed.

Glider gun within a toroidal array. The stream of gliders eventually wraps around and destroys the gun.
Red glider on a square lattice with periodic boundary conditions

In principle, the Game of Life field is infinite, but computers have finite memory. This leads to problems when the active area encroaches on the border of the array. Programmers have used several strategies to address these problems. The simplest strategy is to assume that every cell outside the array is dead. This is easy to program but leads to inaccurate results when the active area crosses the boundary. A more sophisticated trick is to consider the left and right edges of the field to be stitched together, and the top and bottom edges also, yielding a toroidal array. The result is that active areas that move across a field edge reappear at the opposite edge. Inaccuracy can still result if the pattern grows too large, but there are no pathological edge effects. Techniques of dynamic storage allocation may also be used, creating ever-larger arrays to hold growing patterns. The Game of Life on a finite field is sometimes explicitly studied; some implementations, such as Golly, support a choice of the standard infinite field, a field infinite only in one dimension, or a finite field, with a choice of topologies such as a cylinder, a torus, or a Möbius strip.

Alternatively, programmers may abandon the notion of representing the Game of Life field with a two-dimensional array, and use a different data structure, such as a vector of coordinate pairs representing live cells. This allows the pattern to move about the field unhindered, as long as the population does not exceed the size of the live-coordinate array. The drawback is that counting live neighbours becomes a hash-table lookup or search operation, slowing down simulation speed. With more sophisticated data structures this problem can also be largely solved.

For exploring large patterns at great time depths, sophisticated algorithms such as Hashlife may be useful. There is also a method for implementation of the Game of Life and other cellular automata using arbitrary asynchronous updates while still exactly emulating the behaviour of the synchronous game. Source code examples that implement the basic Game of Life scenario in various programming languages, including C, C++, Java and Python can be found at Rosetta Code.

Variations

Since the Game of Life's inception, new, similar cellular automata have been developed. The standard Game of Life is symbolized in rule-string notation as B3/S23. A cell is born if it has exactly three neighbours, survives if it has two or three living neighbours, and dies otherwise. The first number, or list of numbers, is what is required for a dead cell to be born. The second set is the requirement for a live cell to survive to the next generation. Hence B6/S16 means "a cell is born if there are six neighbours, and lives on if there are either one or six neighbours". Cellular automata on a two-dimensional grid that can be described in this way are known as Life-like cellular automata. Another common Life-like automaton, Highlife, is described by the rule B36/S23, because having six neighbours, in addition to the original game's B3/S23 rule, causes a birth. HighLife is best known for its frequently occurring replicators.

Additional Life-like cellular automata exist. The vast majority of these 218 different rules produce universes that are either too chaotic or too desolate to be of interest, but a large subset do display interesting behaviour. A further generalization produces the isotropic rulespace, with 2102 possible cellular automaton rules (the Game of Life again being one of them). These are rules that use the same square grid as the Life-like rules and the same eight-cell neighbourhood, and are likewise invariant under rotation and reflection. However, in isotropic rules, the positions of neighbour cells relative to each other may be taken into account in determining a cell's future state—not just the total number of those neighbours.

A sample of a 48-step oscillator along with 2-step and 4-step oscillators from a two-dimensional hexagonal Game of Life (rule H:B2/S34)

Some variations on the Game of Life modify the geometry of the universe as well as the rules. The above variations can be thought of as a two-dimensional square, because the world is two-dimensional and laid out in a square grid. One-dimensional square variations, known as elementary cellular automata, and three-dimensional square variations have been developed, as have two-dimensional hexagonal and triangular variations. A variant using aperiodic tiling grids has also been made.

Conway's rules may also be generalized such that instead of two states, live and dead, there are three or more. State transitions are then determined either by a weighting system or by a table specifying separate transition rules for each state; for example, Mirek's Cellebration's multi-coloured Rules Table and Weighted Life rule families each include sample rules equivalent to the Game of Life.

Patterns relating to fractals and fractal systems may also be observed in certain Life-like variations. For example, the automaton B1/S12 generates four very close approximations to the Sierpinski triangle when applied to a single live cell. The Sierpinski triangle can also be observed in the Game of Life by examining the long-term growth of an infinitely long single-cell-thick line of live cells, as well as in Highlife, Seeds (B2/S), and Stephen Wolfram's Rule 90.

Immigration is a variation that is very similar to the Game of Life, except that there are two on states, often expressed as two different colours. Whenever a new cell is born, it takes on the on state that is the majority in the three cells that gave it birth. This feature can be used to examine interactions between spaceships and other objects within the game. Another similar variation, called QuadLife, involves four different on states. When a new cell is born from three different on neighbours, it takes the fourth value, and otherwise, like Immigration, it takes the majority value. Except for the variation among on cells, both of these variations act identically to the Game of Life.

Music

Various musical composition techniques use the Game of Life, especially in MIDI sequencing. A variety of programs exist for creating sound from patterns generated in the Game of Life.

Notable programs

The 6366548773467669985195496000th (6×1027) generation of a Turing machine, made in the Game of Life, computed in less than 30 seconds on an Intel Core Duo 2 GHz CPU using Golly in Hashlife mode

Computers have been used to follow and simulate the Game of Life since it was first publicized. When John Conway was first investigating how various starting configurations developed, he tracked them by hand using a go board with its black and white stones. This was tedious and prone to errors. The first interactive Game of Life program was written in an early version of ALGOL 68C for the PDP-7 by M. J. T. Guy and S. R. Bourne. The results were published in the October 1970 issue of Scientific American, along with the statement: "Without its help, some discoveries about the game would have been difficult to make."

A color version of the Game of Life was written by Ed Hall in 1976 for Cromemco microcomputers, and a display from that program filled the cover of the June 1976 issue of Byte. The advent of microcomputer-based color graphics from Cromemco has been credited with a revival of interest in the game.

Two early implementations of the Game of Life on home computers were by Malcolm Banthorpe written in BBC BASIC. The first was in the January 1984 issue of Acorn User magazine, and Banthorpe followed this with a three-dimensional version in the May 1984 issue. Susan Stepney, Professor of Computer Science at the University of York, followed this up in 1988 with Life on the Line, a program that generated one-dimensional cellular automata.

There are now thousands of Game of Life programs online, so a full list will not be provided here. The following is a small selection of programs with some special claim to notability, such as popularity or unusual features. Most of these programs incorporate a graphical user interface for pattern editing and simulation, the capability for simulating multiple rules including the Game of Life, and a large library of interesting patterns in the Game of Life and other cellular automaton rules.

  • Golly is a cross-platform (Windows, Macintosh, Linux, iOS, and Android) open-source simulation system for the Game of Life and other cellular automata (including all Life-like cellular automata, the Generations family of cellular automata from Mirek's Cellebration, and John von Neumann's 29-state cellular automaton) built by Andrew Trevorrow and Tomas Rokicki. It includes the Hashlife algorithm for extremely fast generation, and Lua or Python scriptability for both editing and simulation.
  • Mirek's Cellebration is a freeware one- and two-dimensional cellular automata viewer, explorer, and editor for Windows. It includes powerful facilities for simulating and viewing a wide variety of cellular automaton rules, including the Game of Life, and a scriptable editor.
  • Xlife is a cellular-automaton laboratory by Jon Bennett. The standard UNIX X11 Game of Life simulation application for a long time, it has also been ported to Windows. It can handle cellular automaton rules with the same neighbourhood as the Game of Life, and up to eight possible states per cell.
  • Dr. Blob's Organism is a Shoot 'em up based on Conway's Life. In the game, Life continually generates on a group of cells within a "petri dish". The patterns formed are smoothed and rounded to look like a growing amoeba spewing smaller ones (actually gliders). Special "probes" zap the "blob" to keep it from overflowing the dish while destroying its nucleus.

Google implemented an easter egg of the Game of Life in 2012. Users who search for the term are shown an implementation of the game in the search results page.

The visual novel Anonymous;Code includes a basic implementation of the Game of Life in it, which is connected to the plot of the novel. Near the end of Anonymous;Code, a certain pattern that appears throughout the game as a tattoo on the heroine Momo Aizaki has to be entered into the Game of Life to complete the game (Kok's galaxy, the same pattern used as the logo for the open-source Game of Life program Golly).

Hard science fiction

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