Book of Genesis

From Wikipedia, the free encyclopedia

 

The Creation of Man by Ephraim Moses Lilien, 1903.

 

Jacob flees Laban by Charles Foster, 1897.

 

The Book of Genesis, the first book of the Hebrew Bible and the Old Testament, is Judaism's account of the creation of the world and the origins of the Jewish people.

It is divisible into two parts, the primeval history (chapters 1–11) and the ancestral history (chapters 12–50). The primeval history sets out the author's (or authors') concepts of the nature of the deity and of humankind's relationship with its maker: God creates a world which is good and fit for mankind, but when man corrupts it with sin God decides to destroy his creation, saving only the righteous Noah to reestablish the relationship between man and God. The ancestral history (chapters 12–50) tells of the prehistory of Israel, God's chosen people. At God's command Noah's descendant Abraham journeys from his home into the God-given land of Canaan, where he dwells as a sojourner, as does his son Isaac and his grandson Jacob. Jacob's name is changed to Israel, and through the agency of his son Joseph, the children of Israel descend into Egypt, 70 people in all with their households, and God promises them a future of greatness. Genesis ends with Israel in Egypt, ready for the coming of Moses and the Exodus. The narrative is punctuated by a series of covenants with God, successively narrowing in scope from all mankind (the covenant with Noah) to a special relationship with one people alone (Abraham and his descendants through Isaac and Jacob).

In Judaism, the theological importance of Genesis centers on the covenants linking God to his chosen people and the people to the Promised Land. Christianity has interpreted Genesis as the prefiguration of certain cardinal Christian beliefs, primarily the need for salvation (the hope or assurance of all Christians) and the redemptive act of Christ on the Cross as the fulfillment of covenant promises as the Son of God.

Tradition credits Moses as the author of Genesis, as well as the books of Exodus, Leviticus, Numbers and most of Deuteronomy, but modern scholars increasingly see them as a product of the 6th and 5th centuries BC.

Structure

Genesis appears to be structured around the recurring phrase elleh toledot, meaning "these are the generations," with the first use of the phrase referring to the "generations of heaven and earth" and the remainder marking individuals—Noah, the "sons of Noah", Shem, etc., down to Jacob. It is not clear, however, what this meant to the original authors, and most modern commentators divide it into two parts based on subject matter, a "primeval history" (chapters 1–11) and a "patriarchal history" (chapters 12–50). While the first is far shorter than the second, it sets out the basic themes and provides an interpretive key for understanding the entire book. The "primeval history" has a symmetrical structure hinging on chapters 6–9, the flood story, with the events before the flood mirrored by the events after; the "ancestral history" is structured around the three patriarchs Abraham, Jacob and Joseph. (The stories of Isaac do not make up a coherent cycle of stories and function as a bridge between the cycles of Abraham and Jacob.)

Summary

The Creation of Adam by Michelangelo, 1512.

 

God creates the world in six days and consecrates the seventh as a day of rest. God creates the first humans Adam and Eve and all the animals in the Garden of Eden but instructs them not to eat the fruit of the tree of knowledge of good and evil. A talking serpent portrayed as a deceptive creature or trickster, entices Eve into eating it against God's wishes, and she entices Adam, whereupon God throws them out and curses them—Adam to getting what he needs only by sweat and work, and Eve to giving birth in pain. This is interpreted by Christians as the fall of humanity. Eve bears two sons, Cain and Abel. Cain kills Abel after God accepts Abel's offering but not Cain's. God then curses Cain. Eve bears another son, Seth, to take Abel's place.

After many generations of Adam have passed from the lines of Cain and Seth, the world becomes corrupted by human sin and Nephilim, and God determines to wipe out humanity. First, he instructs the righteous Noah and his family to build an ark and put examples of all the animals on it, seven pairs of every clean animal and one pair of every unclean. Then God sends a great flood to wipe out the rest of the world. When the waters recede, God promises he will never destroy the world with water again, using the rainbow as a symbol of his promise. God sees mankind cooperating to build a great tower city, the Tower of Babel, and divides humanity with many languages and sets them apart with confusion.

God instructs Abram to travel from his home in Mesopotamia to the land of Canaan. There, God makes a covenant with Abram, promising that his descendants shall be as numerous as the stars, but that people will suffer oppression in a foreign land for four hundred years, after which they will inherit the land "from the river of Egypt to the great river, the river Euphrates". Abram's name is changed to Abraham and that of his wife Sarai to Sarah, and circumcision of all males is instituted as the sign of the covenant. Due to her old age, Sarah tells Abraham to take her Egyptian handmaiden, Hagar, as a second wife. Through Hagar, Abraham fathers Ishmael.

God resolves to destroy the cities of Sodom and Gomorrah for the sins of their people. Abraham protests and gets God to agree not to destroy the cities for the sake of ten righteous men. Angels save Abraham's nephew Lot and his family, but his wife looks back on the destruction against their command and turns into a pillar of salt. Lot's daughters, concerned that they are fugitives who will never find husbands, get him drunk to become pregnant by him, and give birth to the ancestors of the Moabites and Ammonites.

Abraham and Sarah go to the Philistine town of Gerar, pretending to be brother and sister (they are half-siblings). The King of Gerar takes Sarah for his wife, but God warns him to return her, and he obeys. God sends Sarah a son whom she will name Isaac; through him will be the establishment of the covenant. Sarah drives Ishmael and his mother Hagar out into the wilderness, but God saves them and promises to make Ishmael a great nation.

The Angel Hinders the Offering of Isaac (Rembrandt, 1635)

 

God tests Abraham by demanding that he sacrifice Isaac. As Abraham is about to lay the knife upon his son, God restrains him, promising him numberless descendants. On the death of Sarah, Abraham purchases Machpelah (believed to be modern Hebron) for a family tomb and sends his servant to Mesopotamia to find among his relations a wife for Isaac; after proving herself, Rebekah becomes Isaac's betrothed. Keturah, Abraham's other wife, births more children, among whose descendants are the Midianites. Abraham dies at a prosperous old age and his family lays him to rest in Hebron.

Isaac's wife Rebecca gives birth to the twins Esau, father of the Edomites, and Jacob. Through deception, Jacob becomes the heir instead of Esau and gains his father's blessing. He flees to his uncle where he prospers and earns his two wives, Rachel and Leah. Jacob's name is changed to Israel, and by his wives and their handmaidens he has twelve sons, the ancestors of the twelve tribes of the Children of Israel, and a daughter, Dinah.

Joseph, Jacob's favorite son, makes his brothers jealous and they sell him into slavery in Egypt. Joseph prospers, after hardship, with God's guidance of interpreting Pharaoh's dream of upcoming famine. He is then reunited with his father and brothers, who fail to recognize him, and plead for food. After much manipulation, he reveals himself and lets them and their households into Egypt, where Pharaoh assigns to them the land of Goshen. Jacob calls his sons to his bedside and reveals their future before he dies. Joseph lives to an old age and exhorts his brethren, if God should lead them out of the country, to take his bones with them.

Composition

Abram's Journey from Ur to Canaan (József Molnár, 1850)

Title and textual witnesses

Genesis takes its Hebrew title from the first word of the first sentence, Bereshit, meaning "In [the] beginning [of]"; in the Greek Septuagint it was called Genesis, from the phrase "the generations of heaven and earth". There are four major textual witnesses to the book: the Masoretic Text, the Samaritan Pentateuch, the Septuagint, and fragments of Genesis found at Qumran. The Qumran group provides the oldest manuscripts but covers only a small proportion of the book; in general, the Masoretic Text is well preserved and reliable, but there are many individual instances where the other versions preserve a superior reading.

Origins

For much of the 20th century most scholars agreed that the five books of the Pentateuch—Genesis, Exodus, Leviticus, Numbers and Deuteronomy—came from four sources, the Yahwist, the Elohist, the Deuteronomist and the Priestly source, each telling the same basic story, and joined together by various editors. Since the 1970s there has been a revolution leading scholars to view the Elohist source as no more than a variation on the Yahwist, and the Priestly source as a body of revisions and expansions to the Yahwist (or "non-Priestly") material. (The Deuteronomistic source does not appear in Genesis.)

Scholars use examples of repeated and duplicate stories to identify the separate sources. In Genesis these include three different accounts of a Patriarch claiming that his wife was his sister, the two creation stories, and the two versions of Abraham sending Hagar and Ishmael into the desert.

This leaves the question of when these works were created. Scholars in the first half of the 20th century came to the conclusion that the Yahwist is a product of the monarchic period, specifically at the court of Solomon, 10th century BC, and the Priestly work in the middle of the 5th century BC (with claims that the author is Ezra), but more recent thinking is that the Yahwist is from either just before or during the Babylonian exile of the 6th century BC, and the Priestly final edition was made late in the Exilic period or soon after.

As for why the book was created, a theory which has gained considerable interest, although still controversial is "Persian imperial authorisation". This proposes that the Persians of the Achaemenid Empire, after their conquest of Babylon in 539 BC, agreed to grant Jerusalem a large measure of local autonomy within the empire, but required the local authorities to produce a single law code accepted by the entire community. The two powerful groups making up the community—the priestly families who controlled the Temple and who traced their origin to Moses and the wilderness wanderings, and the major landowning families who made up the "elders" and who traced their own origins to Abraham, who had "given" them the land—were in conflict over many issues, and each had its own "history of origins", but the Persian promise of greatly increased local autonomy for all provided a powerful incentive to cooperate in producing a single text.

Genre

Genesis is perhaps best seen as an example of a creation myth, a type of literature telling of the first appearance of humans, the stories of ancestors and heroes, and the origins of culture, cities and so forth. The most notable examples are found in the work of Greek historians of the 6th century BC: their intention was to connect notable families of their own day to a distant and heroic past, and in doing so they did not distinguish between myth, legend, and facts. Professor Jean-Louis Ska of the Pontifical Biblical Institute calls the basic rule of the antiquarian historian the "law of conservation": everything old is valuable, nothing is eliminated. Ska also points out the purpose behind such antiquarian histories: antiquity is needed to prove the worth of Israel's traditions to the nations (the neighbours of the Jews in early Persian Palestine), and to reconcile and unite the various factions within Israel itself.

Themes

Joseph Recognized by His Brothers (Léon Pierre Urban Bourgeois, 1863)

Promises to the ancestors

In 1978 David Clines published his influential The Theme of the Pentateuch – influential because he was one of the first to take up the question of the theme of the entire five books. Clines' conclusion was that the overall theme is "the partial fulfillment – which implies also the partial nonfulfillment – of the promise to or blessing of the Patriarchs". (By calling the fulfillment "partial" Clines was drawing attention to the fact that at the end of Deuteronomy the people are still outside Canaan).

The patriarchs, or ancestors, are Abraham, Isaac and Jacob, with their wives (Joseph is normally excluded). Since the name YHWH had not been revealed to them, they worshipped El in his various manifestations. (It is, however, worth noting that in the Jahwist source the patriarchs refer to deity by the name YHWH, for example in Genesis 15.) Through the patriarchs God announces the election of Israel, meaning that he has chosen Israel to be his special people and committed himself to their future. God tells the patriarchs that he will be faithful to their descendants (i.e. to Israel), and Israel is expected to have faith in God and his promise. ("Faith" in the context of Genesis and the Hebrew Bible means agreement to the promissory relationship, not a body of belief).

The promise itself has three parts: offspring, blessings, and land. The fulfilment of the promise to each patriarch depends on having a male heir, and the story is constantly complicated by the fact that each prospective mother – Sarah, Rebekah and Rachel – is barren. The ancestors, however, retain their faith in God and God in each case gives a son – in Jacob's case, twelve sons, the foundation of the chosen Israelites. Each succeeding generation of the three promises attains a more rich fulfillment, until through Joseph "all the world" attains salvation from famine, and by bringing the children of Israel down to Egypt he becomes the means through which the promise can be fulfilled.

God's chosen people

Scholars generally agree that the theme of divine promise unites the patriarchal cycles, but many would dispute the efficacy of trying to examine Genesis' theology by pursuing a single overarching theme, instead citing as more productive the analysis of the Abraham cycle, the Jacob cycle, and the Joseph cycle, and the Yahwist and Priestly sources. The problem lies in finding a way to unite the patriarchal theme of divine promise to the stories of Genesis 1–11 (the primeval history) with their theme of God's forgiveness in the face of man's evil nature. One solution is to see the patriarchal stories as resulting from God's decision not to remain alienated from mankind: God creates the world and mankind, mankind rebels, and God "elects" (chooses) Abraham.

To this basic plot (which comes from the Yahwist) the Priestly source has added a series of covenants dividing history into stages, each with its own distinctive "sign". The first covenant is between God and all living creatures, and is marked by the sign of the rainbow; the second is with the descendants of Abraham (Ishmaelites and others as well as Israelites), and its sign is circumcision; and the last, which does not appear until the book of Exodus, is with Israel alone, and its sign is Sabbath. A great leader mediates each covenant (Noah, Abraham, Moses), and at each stage God progressively reveals himself by his name (Elohim with Noah, El Shaddai with Abraham, Yahweh with Moses).

Judaism's weekly Torah portions

First Day of Creation (from the 1493 Nuremberg Chronicle)

• Bereshit, on Genesis 1–6: Creation, Eden, Adam and Eve, Cain and Abel, Lamech, wickedness
• Noach, on Genesis 6–11: Noah's Ark, the Flood, Noah's drunkenness, the Tower of Babel
• Lech-Lecha, on Genesis 12–17: Abraham, Sarah, Lot, covenant, Hagar and Ishmael, circumcision
• Vayeira, on Genesis 18–22: Abraham's visitors, Sodomites, Lot's visitors and flight, Hagar expelled, binding of Isaac
• Chayei Sarah, on Genesis 23–25: Sarah buried, Rebekah for Isaac
• Toledot, on Genesis 25–28: Esau and Jacob, Esau's birthright, Isaac's blessing
• Vayetze, on Genesis 28–32: Jacob flees, Rachel, Leah, Laban, Jacob's children and departure
• Vayishlach, on Genesis 32–36: Jacob's reunion with Esau, the rape of Dinah
• Vayeshev, on Genesis 37–40: Joseph's dreams, coat, and slavery, Judah with Tamar, Joseph and Potiphar
• Miketz, on Genesis 41–44: Pharaoh's dream, Joseph in government, Joseph's brothers visit Egypt
• Vayigash, on Genesis 44–47: Joseph reveals himself, Jacob moves to Egypt
• Vaychi, on Genesis 47–50: Jacob's blessings, death of Jacob and of Joseph

Weasel program

From Wikipedia, the free encyclopedia

 

The software's name takes itself from dialogue in Hamlet:
Hamlet: Do you see yonder cloud that's almost in shape of a camel?
Polonius: By the mass, and 'tis like a camel, indeed.
Hamlet: Methinks it is like a weasel.

 

The weasel program or Dawkins' weasel is a thought experiment and a variety of computer simulations illustrating it. Their aim is to demonstrate that the process that drives evolutionary systems—random variation combined with non-random cumulative selection—is different from pure chance. 

The thought experiment was formulated by Richard Dawkins, and the first simulation written by him; various other implementations of the program have been written by others.

Overview

In chapter 3 of his book The Blind Watchmaker, Dawkins gave the following introduction to the program, referencing the well-known infinite monkey theorem:

I don't know who it was first pointed out that, given enough time, a monkey bashing away at random on a typewriter could produce all the works of Shakespeare. The operative phrase is, of course, given enough time. Let us limit the task facing our monkey somewhat. Suppose that he has to produce, not the complete works of Shakespeare but just the short sentence 'Methinks it is like a weasel', and we shall make it relatively easy by giving him a typewriter with a restricted keyboard, one with just the 26 (capital) letters, and a space bar. How long will he take to write this one little sentence?

The scenario is staged to produce a string of gibberish letters, assuming that the selection of each letter in a sequence of 28 characters will be random. The number of possible combinations in this random sequence is 27²⁸, or about 10⁴⁰, so the probability that the monkey will produce a given sequence is extremely low. Any particular sequence of 28 characters could be selected as a "target" phrase, all equally as improbable as Dawkins's chosen target, "METHINKS IT IS LIKE A WEASEL". 

A computer program could be written to carry out the actions of Dawkins's hypothetical monkey, continuously generating combinations of 26 letters and spaces at high speed. Even at the rate of millions of combinations per second, it is unlikely, even given the entire lifetime of the universe to run, that the program would ever produce the phrase "METHINKS IT IS LIKE A WEASEL".

Dawkins intends this example to illustrate a common misunderstanding of evolutionary change, i.e. that DNA sequences or organic compounds such as proteins are the result of atoms randomly combining to form more complex structures. In these types of computations, any sequence of amino acids in a protein will be extraordinarily improbable (this is known as Hoyle's fallacy). Rather, evolution proceeds by hill climbing, as in adaptive landscapes.

Dawkins then goes on to show that a process of cumulative selection can take far fewer steps to reach any given target. In Dawkins's words:

We again use our computer monkey, but with a crucial difference in its program. It again begins by choosing a random sequence of 28 letters, just as before ... it duplicates it repeatedly, but with a certain chance of random error – 'mutation' – in the copying. The computer examines the mutant nonsense phrases, the 'progeny' of the original phrase, and chooses the one which, however slightly, most resembles the target phrase, METHINKS IT IS LIKE A WEASEL.

By repeating the procedure, a randomly generated sequence of 28 letters and spaces will be gradually changed each generation. The sequences progress through each generation:

Generation 01:   WDLTMNLT DTJBKWIRZREZLMQCO P 

Generation 02:   WDLTMNLT DTJBSWIRZREZLMQCO P

Generation 10:   MDLDMNLS ITJISWHRZREZ MECS P

Generation 20:   MELDINLS IT ISWPRKE Z WECSEL

Generation 30:   METHINGS IT ISWLIKE B WECSEL

Generation 40:   METHINKS IT IS LIKE I WEASEL

Generation 43:   METHINKS IT IS LIKE A WEASEL

Dawkins continues:

The exact time taken by the computer to reach the target doesn't matter. If you want to know, it completed the whole exercise for me, the first time, while I was out to lunch. It took about half an hour. (Computer enthusiasts may think this unduly slow. The reason is that the program was written in BASIC, a sort of computer baby-talk. When I rewrote it in Pascal, it took 11 seconds.) Computers are a bit faster at this kind of thing than monkeys, but the difference really isn't significant. What matters is the difference between the time taken by cumulative selection, and the time which the same computer, working flat out at the same rate, would take to reach the target phrase if it were forced to use the other procedure of single-step selection: about a million million million million million years. This is more than a million million million times as long as the universe has so far existed.

Implications for biology

The program aims to demonstrate that the preservation of small changes in an evolving string of characters (or genes) can produce meaningful combinations in a relatively short time as long as there is some mechanism to select cumulative changes, whether it is a person identifying which traits are desirable (in the case of artificial selection) or a criterion of survival ("fitness") imposed by the environment (in the case of natural selection). Reproducing systems tend to preserve traits across generations, because the offspring inherit a copy of the parent's traits. It is the differences between offspring, the variations in copying, which become the basis for selection, allowing phrases closer to the target to survive, and the remaining variants to "die." 

Dawkins discusses the issue of the mechanism of selection with respect to his "biomorphs" program:

The human eye has an active role to play in the story. It is the selecting agent. It surveys the litter of progeny and chooses one for breeding. ...Our model, in other words, is strictly a model of artificial selection, not natural selection. The criterion for 'success' is not the direct criterion of survival, as it is in true natural selection. In true natural selection, if a body has what it takes to survive, its genes automatically survive because they are inside it. So the genes that survive tend to be, automatically, those genes that confer on bodies the qualities that assist them to survive.

Regarding the example's applicability to biological evolution, he is careful to point out that it has its limitations:

Although the monkey/Shakespeare model is useful for explaining the distinction between single-step selection and cumulative selection, it is misleading in important ways. One of these is that, in each generation of selective 'breeding', the mutant 'progeny' phrases were judged according to the criterion of resemblance to a distant ideal target, the phrase METHINKS IT IS LIKE A WEASEL. Life isn't like that. Evolution has no long-term goal. There is no long-distance target, no final perfection to serve as a criterion for selection, although human vanity cherishes the absurd notion that our species is the final goal of evolution. In real life, the criterion for selection is always short-term, either simple survival or, more generally, reproductive success.

A full run of a weasel program, with 100 offspring per generation, and a 5% mutation chance per character copied. Only the "fittest" string of each generation is shown. Note that, in generation 8, the 25th character, which had been correct (A), becomes incorrect (I). The program does not "lock" correct characters, rather it measures at each iteration the closeness of the complete string to the 'target' phrase.

More complex models

In The Blind Watchmaker, Dawkins goes on to provide a graphical model of gene selection involving entities he calls biomorphs. These are two-dimensional sets of line segments which bear relationships to each other, drawn under the control of "genes" that determine the appearance of the biomorph. By selecting entities from sequential generations of biomorphs, an experimenter can guide the evolution of the figures toward given shapes, such as "airplane" or "octopus" biomorphs.

As a simulation, the biomorphs are not much closer to the actual genetic behavior of biological organisms. Like the Weasel program, their development is shaped by an external factor, in this case the decisions of the experimenter who chooses which of many possible shapes will go forward into the following generation. They do however serve to illustrate the concept of "genetic space," where each possible gene is treated as a dimension, and the actual genomes of living organisms make up a tiny fraction of all possible gene combinations, most of which will not produce a viable organism. As Dawkins puts it, "however many ways there may be of being alive, it is certain that there are vastly more ways of being dead". 

In Climbing Mount Improbable, Dawkins responded to the limitations of the Weasel program by describing programs, written by other parties, that modeled the evolution of the spider web. He suggested that these programs were more realistic models of the evolutionary process, since they had no predetermined goal other than coming up with a web that caught more flies through a "trial and error" process. Spiderwebs were seen as good topics for evolutionary modeling because they were simple examples of biosystems that were easily visualized; the modeling programs successfully generated a range of spider webs similar to those found in nature.

Example algorithm

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Although Dawkins did not provide the source code for his program, a "Weasel" style algorithm could run as follows.

1. Start with a random string of 28 characters.
2. Make 100 copies of the string (reproduce).
3. For each character in each of the 100 copies, with a probability of 5%, replace (mutate) the character with a new random character.
4. Compare each new string with the target string "METHINKS IT IS LIKE A WEASEL", and give each a score (the number of letters in the string that are correct and in the correct position).
5. If any of the new strings has a perfect score (28), halt. Otherwise, take the highest scoring string, and go to step 2.

For these purposes, a "character" is any uppercase letter, or a space. The number of copies per generation, and the chance of mutation per letter are not specified in Dawkins's book; 100 copies and a 5% mutation rate are examples. Correct letters are not "locked". Each correct letter may become incorrect in subsequent generations. The terms of the program and the existence of the target phrase do however mean that such 'negative mutations' will quickly be 'corrected'.

Watchmaker analogy

From Wikipedia, the free encyclopedia

 

The watchmaker analogy or watchmaker argument is a teleological argument which states, by way of an analogy, that a design implies a designer. The analogy has played a prominent role in natural theology and the "argument from design," where it was used to support arguments for the existence of God and for the intelligent design of the universe, in both Christianity and Deism.

Sir Isaac Newton, among other leaders in the scientific revolution, including René Descartes, upheld "that the physical laws he had uncovered revealed the mechanical perfection of the workings of the universe to be akin to a watch, wherein the watchmaker is God."

The 1859 publication of Charles Darwin's theory of natural selection put forward an explanation for complexity and adaptation, which reflects scientific consensus on the origins of biological diversity. In the eyes of some, this provided a counter-argument to the watchmaker analogy: for example, the evolutionary biologist Richard Dawkins referred to the analogy in his 1986 book The Blind Watchmaker giving his explanation of evolution. Others, however, consider the watchmaker analogy to be compatible with evolutionary creation, opining that the two concepts are not mutually exclusive. In the 19th century, deists, who championed the watchmaker analogy, held that Darwin's theory fit with "the principle of uniformitarianism—the idea that all processes in the world occur now as they have in the past" and that deistic evolution "provided an explanatory framework for understanding species variation in a mechanical universe."

In the United States, starting in the 1960s, creationists revived versions of the argument to dispute the concepts of evolution and natural selection, and there was renewed interest in the watchmaker argument. The most famous statement of this teleological argument using the watchmaker analogy was given by William Paley in his 1802 book Natural Theology or Evidences of the Existence and Attributes of the Deity.

History

Scientific revolution

The scientific revolution "nurtured a growing awareness" that "there were universal laws of nature at work that ordered the movement of the world and its parts." James K. A. Smith and Amos Yong write that in "astronomy, the Copernican revolution regarding the heliocentrism of the solar system, Johannes Kepler's (1571–1630) three laws of planetary motion, and Isaac Newton's (1642–1727) law of universal gravitation—laws of gravitation and of motion, and notions of absolute space and time—all combined to establish the regularities of heavenly and earthly bodies." With such a backdrop, "deists suggested the watchmaker analogy: just as watches are set in motion by watchmakers, after which they operate according to their pre-established mechanisms, so also was the world begun by the God as creator, after which it and all its parts have operated according to their pre-established natural laws. With these laws perfectly in place, events have unfolded according to the prescribed plan." For Sir Isaac Newton, "the regular motion of the planets made it reasonable to believe in the continued existence of God." Newton also upheld the idea that "like a watchmaker, God was forced to intervene in the universe and tinker with the mechanism from time to time to ensure that it continued operating in good working order." Like Newton, René Descartes viewed "the cosmos as a great time machine operating according to fixed laws, a watch created and wound up by the great watchmaker."

William Paley

Watches and timepieces have been used as examples of complicated technology in philosophical discussions. For example, Cicero, Voltaire and René Descartes all used timepieces in arguments regarding purpose. The watchmaker analogy, as described here, was used by Bernard le Bovier de Fontenelle in 1686, but was most famously formulated by Paley. 

Paley used the watchmaker analogy in his book Natural Theology, or Evidences of the Existence and Attributes of the Deity collected from the Appearances of Nature, published in 1802. In it, Paley wrote that if a pocket watch is found on a heath, it is most reasonable to assume that someone dropped it and that it was made by at least one watchmaker, not by natural forces:

William Paley

In crossing a heath, suppose I pitched my foot against a stone, and were asked how the stone came to be there; I might possibly answer, that, for anything I knew to the contrary, it had lain there forever: nor would it perhaps be very easy to show the absurdity of this answer. But suppose I had found a watch upon the ground, and it should be inquired how the watch happened to be in that place; I should hardly think of the answer I had before given, that for anything I knew, the watch might have always been there. ... There must have existed, at some time, and at some place or other, an artificer or artificers, who formed [the watch] for the purpose which we find it actually to answer; who comprehended its construction, and designed its use. ... Every indication of contrivance, every manifestation of design, which existed in the watch, exists in the works of nature; with the difference, on the side of nature, of being greater or more, and that in a degree which exceeds all computation.

— William Paley, Natural Theology (1802)

Paley went on to argue that the complex structures of living things and the remarkable adaptations of plants and animals required an intelligent designer. He believed the natural world was the creation of God and showed the nature of the creator. According to Paley, God had carefully designed "even the most humble and insignificant organisms" and all of their minute features (such as the wings and antennae of earwigs). He believed, therefore, that God must care even more for humanity. 

Paley recognised that there is great suffering in nature and nature appears to be indifferent to pain. His way of reconciling that with his belief in a benevolent God was to assume that life had more pleasure than pain.

As a side note, a charge of wholesale plagiarism from this book was brought against Paley in The Athenaeum for 1848, but the famous illustration of the watch was not peculiar to Nieuwentyt and had been used by many others before either Paley or Nieuwentyt.

Joseph Butler

William Paley taught the works of Joseph Butler and appears to have built on Butler's 1736 design arguments of inferring a designer from evidence of design. Butler noted: "As the manifold Appearances of Design and of final Causes, in the Constitution of the World, prove it to be the Work of an intelligent Mind ... The appearances of Design and of final Causes in the constitution of nature as really prove this acting agent to be an intelligent Designer... ten thousand Instances of Design, cannot but prove a Designer.".

Jean-Jacques Rousseau

Rousseau also mentioned the watchmaker theory. He wrote the following in his 1762 book, Emile:

I am like a man who sees the works of a watch for the first time; he is never weary of admiring the mechanism, though he does not know the use of the instrument and has never seen its face. I do not know what this is for, says he, but I see that each part of it is fitted to the rest, I admire the workman in the details of his work, and I am quite certain that all these wheels only work together in this fashion for some common end which I cannot perceive. Let us compare the special ends, the means, the ordered relations of every kind, then let us listen to the inner voice of feeling; what healthy mind can reject its evidence? Unless the eyes are blinded by prejudices, can they fail to see that the visible order of the universe proclaims a supreme intelligence? What sophisms must be brought together before we fail to understand the harmony of existence and the wonderful co-operation of every part for the maintenance of the rest? 

Criticism

David Hume

Before Paley published his book, David Hume (1711-1776) had already put forward a number of philosophical criticisms of the watch analogy, and to some extent anticipated the concept of natural selection. His criticisms can be separated into three major distinctions.

His first objection is that we have no experience of world-making. Hume highlighted the fact that everything we claim to know the cause of, we have derived the inductions from previous experiences of similar objects being created or seen the object itself being created ourselves. For example, with a watch, we know it has to be created by a watch-maker because we can observe it being made and compare it to the making of other similar watches or objects to deduce they have alike causes in their creation. However, he argues that we have no experience of the universe's creation or any other universe's creations to compare our own universe to and never will; therefore, it would be illogical to infer that our universe has been created by an intelligent designer in the same way that a watch has.

The second criticism that Hume offers is about the form of the argument as an analogy in itself. An analogical argument claims that because object X (a watch) is like object Y (the universe) in one respect, both are therefore probably alike in another, hidden, respect (their cause, having to be created by an intelligent designer). He points out that for an argument from analogy to be successful, the two things that are being compared have to have an adequate number of similarities that are relevant to the respect that are analogised. For example, a kitten and a lion may be very similar in many respects, but just because a lion makes a "roar", it would not be correct to infer a kitten also "roars": the similarities between the two objects being not enough and the degree of relevance to what sound they make being not relevant enough. Hume then argues that the universe and a watch also do not have enough relevant or close similarities to infer that they were both created the same way. For example, the universe is made of organic natural material, but the watch is made of artificial mechanic materials. He claims that in the same respect, the universe could be argued to be more analogous to something more organic such as a vegetable (which we can observe for ourselves does not need a 'designer' or a 'watchmaker' to be created). Although he admits the analogy of a universe to a vegetable to seem ridiculous, he says that it is just as ridiculous to analogize the universe with a watch.

The third criticism that Hume offers is that even if the argument did give evidence for a designer; it still gives no evidence for the traditional 'omnipotent', 'benevolent' (all-powerful and all-loving) God of traditional Christian theism. One of the main assumptions of Paley's argument is that 'like effects have like causes'; or that machines (like the watch) and the universe have similar features of design and so both also have the same cause of their existence: they must both have an intelligent designer. However, Hume points out that what Paley does not comprehend is to what extent 'like causes' extend: how similar the creation of a universe is to the creation of a watch. Instead, Paley moves straight to the conclusion that this designer of the universe is the 'God' he believes in of traditional Christianity. Hume, however takes the idea of 'like causes' and points out some potential absurdities in how far the 'likeness' of these causes could extend to if the argument were taken further as to explain this. One example that he uses is how a machine or a watch is usually designed by a whole team of people rather than just one person. Surely, if we are analogizing the two in this way, it would point to there being a group of gods who created the universe, not just a single being. Another example he uses is that complex machines are usually the result of many years of trial and error with every new machine being an improved version of the last. Also by analogy of the two, would that not hint that the universe could also have been just one of many of God's 'trials' and that there are much better universes out there? However, if that were taken to be true, surely the 'creator' of it all would not be 'all loving' and 'all powerful' if they had to carry out the process of 'trial and error' when creating the universe?

Hume also points out there is still a possibility that the universe could have been created by random chance but still show evidence of design as the universe is eternal and would have an infinite amount of time to be able to form a universe so complex and ordered as our own. He called that the 'Epicurean hypothesis'. It argued that when the universe was first created, the universe was random and chaotic, but if the universe is eternal, over an unlimited period of time, natural forces could have naturally 'evolved' by random particles coming together over time into the incredibly ordered system we can observe today without the need of an intelligent designer as an explanation.

The last objection that he makes draws on the widely discussed problem of evil. He argues that all the daily unnecessary suffering that goes on everywhere within the world is yet another factor that pulls away from the idea that God is an 'omnipotent' 'benevolent' being.

Charles Darwin

Charles Darwin in 1880

 

Charles Darwin's theory provided another explanation. 

When Darwin completed his studies of theology at Christ's College, Cambridge in 1831, he read Paley's Natural Theology and believed that the work gave rational proof of the existence of God. That was because living beings showed complexity and were exquisitely fitted to their places in a happy world. 

Subsequently, on the voyage of the Beagle, Darwin found that nature was not so beneficent, and the distribution of species did not support ideas of divine creation. In 1838, shortly after his return, Darwin conceived his theory that natural selection, rather than divine design, was the best explanation for gradual change in populations over many generations. He published the theory in On the Origin of Species in 1859, and in later editions, he noted responses that he had received:

It can hardly be supposed that a false theory would explain, in so satisfactory a manner as does the theory of natural selection, the several large classes of facts above specified. It has recently been objected that this is an unsafe method of arguing; but it is a method used in judging of the common events of life, and has often been used by the greatest natural philosophers ... I see no good reason why the views given in this volume should shock the religious feelings of any one. It is satisfactory, as showing how transient such impressions are, to remember that the greatest discovery ever made by man, namely, the law of the attraction of gravity, was also attacked by Leibnitz, "as subversive of natural, and inferentially of revealed, religion." A celebrated author and divine has written to me that "he has gradually learnt to see that it is just as noble a conception of the Deity to believe that He created a few original forms capable of self-development into other and needful forms, as to believe that He required a fresh act of creation to supply the voids caused by the action of His laws."

— Charles Darwin, The Origin of Species (1859)

Darwin reviewed the implications of this finding in his autobiography:

Although I did not think much about the existence of a personal God until a considerably later period of my life, I will here give the vague conclusions to which I have been driven. The old argument of design in nature, as given by Paley, which formerly seemed to me so conclusive, fails, now that the law of natural selection has been discovered. We can no longer argue that, for instance, the beautiful hinge of a bivalve shell must have been made by an intelligent being, like the hinge of a door by man. There seems to be no more design in the variability of organic beings and in the action of natural selection, than in the course which the wind blows. Everything in nature is the result of fixed laws.

— Charles Darwin, The Autobiography of Charles Darwin 1809–1882. With the original omissions restored.

The idea that nature was governed by laws was already common, and in 1833, William Whewell as a proponent of the natural theology that Paley had inspired had written that "with regard to the material world, we can at least go so far as this—we can perceive that events are brought about not by insulated interpositions of Divine power, exerted in each particular case, but by the establishment of general laws." Darwin, who spoke of the "fixed laws" concurred with Whewell, writing in his second edition of On The Origin of Species:

There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved.

— Charles Darwin, The Origin of Species (1860)

By the time that Darwin published his theory, theologians of liberal Christianity were already supporting such ideas, and by the late 19th century, their modernist approach was predominant in theology. In science, evolution theory incorporating Darwin's natural selection became completely accepted. 

Richard Dawkins

Richard Dawkins

In The Blind Watchmaker, Richard Dawkins argues that the watch analogy conflates the complexity that arises from living organisms that are able to reproduce themselves (and may become more complex over time) with the complexity of inanimate objects, unable to pass on any reproductive changes (such as the multitude of parts manufactured in a watch). The comparison breaks down because of this important distinction.

In a BBC Horizon episode, also entitled The Blind Watchmaker, Dawkins described Paley's argument as being "as mistaken as it is elegant". In both contexts, he saw Paley as having made an incorrect proposal as to a certain problem's solution, but Dawkins did not disrespect him. In his essay The Big Bang, Steven Pinker discusses Dawkins's coverage of Paley's argument, adding: "Biologists today do not disagree with Paley's laying out of the problem. They disagree only with his solution."

In his book The God Delusion, Dawkins argues that life was the result of complex biological processes. He makes the argument that the comparison to the lucky construction of a watch is fallacious because proponents of evolution do not consider evolution "lucky". Rather than luck, the evolution of human life is the result of billions of years of natural selection. He concludes that evolution is a fair contestant to replace God in the role of watchmaker.

In addition, he argues that the watchmaker's creation of the watch implies that the watchmaker must be more complex than the watch. Design is top-down, someone or something more complex designs something less complex. To follow the line upwards demands that the watch was designed by a (necessarily more complex) watchmaker, the watchmaker must have been created by a more complex being than himself. So the question becomes who designed the designer? Dawkins argues that (a) this line continues ad infinitum, and (b) it does not explain anything.

Evolution, on the other hand, takes a bottom-up approach; it explains how more complexity can arise gradually by building on or combining lesser complexity.

In response to such claims, Nathan Schneider writes, "Paley died decades before The Origin of Species was published, and ever since his views have been so repeatedly set in opposition to Darwin's that Richard Dawkins titled one of his books on evolution The Blind Watchmaker. A closer look at Paley's own thinking reveals, however, a God who works through the laws of nature, not beyond them like the modern ID theorists' designer. Paley had no objection to species changing over time. It's only in today's highly polarized culture-war climate that we don't bother to notice that one of the forefathers of intelligent design theory might have been perfectly comfortable with evolution."

Richerson and Boyd

Biologist Peter Richerson and anthropologist Robert Boyd offer an oblique criticism by arguing that watches were not "hopeful monsters created by single inventors," but were created by watchmakers building up their skills in a cumulative fashion over time, each contributing to a watch-making tradition from which any individual watchmaker draws their designs.

Contemporary usage

In the early 20th century, the modernist theology of higher criticism was contested in the United States by Biblical literalists, who campaigned successfully against the teaching of evolution and began calling themselves creationists in the 1920s. When teaching of evolution was reintroduced into public schools in the 1960s, they adopted what they called creation science that had a central concept of design in similar terms to Paley's argument. That idea was then relabeled intelligent design, which presents the same analogy as an argument against evolution by natural selection without explicitly stating that the "intelligent designer" was God. The argument from the complexity of biological organisms was now presented as the irreducible complexity argument, the most notable proponent of which was Michael Behe, and, leveraging off the verbiage of information theory, the specified complexity argument, the most notable proponent of which was William Dembski. 

The watchmaker analogy was referenced in the 2005 Kitzmiller v. Dover Area School District trial. Throughout the trial, Paley was mentioned several times. The defense's expert witness John Haught noted that both Intelligent Design and the watchmaker analogy are "reformulations" of the same theological argument. On day 21 of the trial, Mr. Harvey walked Dr. Minnich through a modernized version of Paley's argument, substituting a cell phone for the watch. In his ruling, the judge stated that the use of the argument from design by intelligent design proponents "is merely a restatement of the Reverend William Paley's argument applied at the cell level," adding "Minnich, Behe, and Paley reach the same conclusion, that complex organisms must have been designed using the same reasoning, except that Professors Behe and Minnich refuse to identify the designer, whereas Paley inferred from the presence of design that it was God." The judge ruled that such an inductive argument is not accepted as science because it is unfalsifiable.