The watchmaker analogy or watchmaker argument is a teleological argument, an argument for the existence of God. In broad terms, the watchmaker analogy states that just as it is readily observed that a watch (e.g., a pocket watch) did not come to be accidentally or on its own but rather through the intentional handiwork of a skilled watchmaker, it is also readily observed that nature did not come to be accidentally or on its own but through the intentional handiwork of an intelligent designer. The watchmaker analogy originated in natural theology and is often used to argue for the concept of intelligent design. The analogy states that a design implies a designer, by an intelligent designer, i.e., a creator deity. The watchmaker analogy was given by William Paley in his 1802 book Natural Theology or Evidences of the Existence and Attributes of the Deity.
The original analogy played a prominent role in natural theology and the "argument from design", where it was used to support arguments for the existence of God of the universe, in both Christianity and Deism. Prior to Paley, however, Sir Isaac Newton, René Descartes, and others from the time of the Scientific Revolution had each believed "that the physical laws he [each] 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 book on natural selection put forward an alternative explanation to the watchmaker analogy, for complexity and adaptation. 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."
When evolutionary biology began being taught in American high schools in the 1960s, Christian fundamentalists used versions of the argument to dispute the concepts of evolution and natural selection, and there was renewed interest in the watchmaker argument. Evolutionary biologist Richard Dawkins referred to the analogy in his 1986 book The Blind Watchmaker when explaining the mechanism of evolution. Others, however, consider the watchmaker analogy to be compatible with evolutionary creation, opining that the two concepts are not mutually exclusive.
History
Ancient predecessor
In the second century Epictetus argued that, by analogy to the way a sword is made by a craftsman to fit with a scabbard, so human genitals and the desire of humans to fit them together suggest a type of design or craftsmanship of the human form. Epictetus attributed this design to a type of Providence woven into the fabric of the universe, rather than to a personal monotheistic god.
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." Amos Yong writes 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".
Simultaneously, the development of machine technology and the emergence of the mechanical philosophy encouraged mechanical imagery unlikely to have come to the fore in previous ages.
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 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". Similarly to Newton, René Descartes (1596–1650) speculated on "the cosmos as a great time machine operating according to fixed laws, a watch created and wound up by the great watchmaker".Compare:
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:
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. But the charge of plagiarism was based on more similarities. For example, Nieuwentyt wrote "in the middle of a Sandy down, or in a desart and solitary Place, where few People are used to pass, any one should find a Watch ..."Nieuwentyt quotation given in , pages 69–70. Jantzen elaborates on the charge of plagiarism on pages 168–169, and concludes "... I will take it as a given that, in fact, Paley passed off as his own (or, more charitably, 'reworked') an argument that he took from 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 watchmaker 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.