The Argument from Design: a Guided Tour of William Paley's
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View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Springer - Publisher Connector Evo Edu Outreach (2009) 2:602–611 DOI 10.1007/s12052-009-0184-6 EVOLUTIONARY CONCEPTS The Argument from Design: A Guided Tour of William Paley’s Natural Theology (1802) T. Ryan Gregory Published online: 24 October 2009 # Springer Science + Business Media, LLC 2009 Abstract According to the classic “argument from design,” Introduction observations of complex functionality in nature can be taken to imply the action of a supernatural designer, just as the The “teleological argument,” better known as the “argument purposeful construction of human artifacts reveals the hand of from design,” is the claim that the appearance of “design” in the artificer. The argument from design has been in use for nature—such as the complexity, order, purposefulness, and millennia, but it is most commonly associated with the functionality of living organisms—can only be explained by nineteenth century English theologian William Paley and his the existence of a “designer” (typically of the supernatural 1802 treatise Natural Theology, or Evidence of the Existence variety). In its most familiar manifestation, the argument and Attributes of the Deity, Collected from the Appearances from design involves drawing parallels between human- of Nature. The book remains relevant more than 200 years designed objects (e.g., telescopes, outboard motors) and after it was written, in large part because arguments very biological counterparts with similar functional roles (e.g., similar to Paley’s underlie current challenges to the teaching eyes, bacterial flagella). The former are complex, often of evolution (indeed, his name arises with considerable indivisibly so if they are to maintain their current function, frequency in associated discussions). This paper provides an clearly perform specific functions, and are known to have accessible overview of the arguments presented by Paley in been the product of intentional design. The functional Natural Theology and considers them both in their own complexity of living organisms is far greater still, it is terms and in the context of contemporary issues. argued, and, therefore, must present even stronger evidence for the role of intelligent agency. Keywords Adaptation . Chance . Design . Evolution . Eye . Though the basic premise of the teleological argument had Teleological argument been articulated by thinkers as far back as ancient Greece and Rome, today it is almost universally associated with the I did not at that time [as a Cambridge theology student, writings of one person: William Paley (Fig. 1). Paley was 1827–1831] trouble myself about Paley’s premises; born in July 1743 in Peterborough, Cambridgeshire, and taking these on trust, I was charmed and England. He was educated at Christ’s College, Cambridge, convinced by the long line of argumentation. (p. 59) and was ordained a deacon in 1766 and soon thereafter a priest in Cambridge. He was appointed Archdeacon of The old argument from design in nature, as given by Carlisle Cathedral in 1782 and awarded a Doctor of Divinity Paley, which formerly seemed to me so conclusive, degree at Cambridge in 1795. He authored several successful fails, now that the law of natural selection has been theological works, the best-known being Natural Theology, discovered. (p. 87) or Evidence of the Existence and Attributes of the Deity, Charles Darwin, Autobiography Collected from the Appearances of Nature. Natural Theology was published in 1802, only * T. R. Gregory ( ) three years before Paley’s death on May 25, 1805. It was Department of Integrative Biology, University of Guelph, Guelph, ON N1G 2W1, Canada very successful, going through ten editions in the first e-mail: [email protected] four years alone (see Fyfe 2002). Despite being written in Evo Edu Outreach (2009) 2:602–611 603 the trial testimony transcripts, and he is mentioned a further half a dozen times in Judge Jones’s decision.2 In light of their continuing importance in current discourse, it is worth exploring the arguments presented in Paley’s classic treatise. This review is intended to provide a “guided tour” of Natural Theology,3 giving the reader an abridged and annotated rendition of Paley’swidely referenced (but less often read) account of the argument from design. Watches and Watchmakers Natural Theology opens with the paragraph for which it is best (if not exclusively) known, in which Paley draws a contrast between a rock and a pocket watch:4 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 any thing I knew to the contrary, it had lain there for ever: 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 Fig. 1 William Paley (1743–1805). Portrait circa 1790 by George the answer which I had before given, that, for any Romney (National Portrait Gallery, London) thing I knew, the watch might have always been there. Yet why should not this answer serve for the watch as well as for the stone? why is it not as admissible in the second case, as in the first? For this reason, and labyrinthine prose (by modern standards), Natural Theolo- for no other, viz. that, when we come to inspect the gy remains an especially lucid exposition of the classic watch, we perceive (what we could not discover in the argument from design. This undoubtedly is one of the stone) that its several parts are framed and put reasons that Paley’s name is most commonly linked with together for a purpose, e. g. that they are so formed the design argument even though it was by no means and adjusted as to produce motion, and that motion so original to him.1 regulated as to point out the hour of the day; that, if Darwin was influenced by Paley’s work, and some the different parts had been differently shaped from modern authors have cited it as an important example of pre-Darwinian “adaptationist” thinking (e.g., Dawkins 2 1986; Williams 1992; but see Gliboff 2000; McLaughlin Online copies are available for both the transcripts (http://ncseweb. org/creationism/legal/kitzmiller-trial-transcripts) and the decision 2008). Whatever its significance in the past, it is clear that (http://www.pamd.uscourts.gov/kitzmiller/kitzmiller_342.pdf). Paley’s contribution continues to be of direct relevance in 3 The first edition of Natural Theology of 1802 is available in the the current educational and political climate. Notably, Oxford World’s Classics series from Oxford University Press. Quotes Natural Theology was exhibit P-751 in the landmark 2005 and associated page numbers given in this review come from the 12th edition, as provided by The Complete Work of Charles Darwin Online Kitzmiller v. Dover trial, which successfully challenged the (http://darwin-online.org.uk/content/frameset?itemID=A142). A later constitutionality of promoting “intelligent design” in US edition is also available at Google Books (http://books.google.com/ public schools. Paley’s name appears more than 80 times in books?id=-XFHAAAAIAAJ). The differences between editions are minor. 4 Like many of the arguments most famously attributed to Paley, an analogy to a timepiece was used by various thinkers before him. For example, Marcus Tullius Cicero wrote in his De Natura Deorum in 45 BCE: “When you see a sundial or a waterclock, you see that it tells the time by design and not by chance. How then can you imagine that 1 John Ray’s 1691 treatise The Wisdom of God Manifested in the the universe as a whole is devoid of purpose and intelligence, when it Works of the Creation was a notable forerunner (available online: embraces everything, including these artifacts themselves and their http://books.google.ca/books?id=HvQ4AAAAMAAJ). artificers?” Numerous other examples are reviewed by Moore (2009). 604 Evo Edu Outreach (2009) 2:602–611 what they are, of a different size from what they are, the utility of the end: he knows the subserviency and or placed after any other manner, or in any other adaptation of the means to the end. These points order, than that in which they are placed, either no being known, his ignorance of other points, his doubts motion at all would have been carried on in the concerning other points, affect not the certainty of his machine, or none which would have answered the use reasoning. The consciousness of knowing little, need that is now served by it. (p.1–2) not beget a distrust of that which he does know.6 (p.7) Thus, in the very first passage of a book written more However, given their aggressive resistance to the notion than two centuries ago, Paley encapsulates the core of suboptimality or nonfunction of biological structures,7 it components of the argument from design—an argument appears that many modern design proponents disagree with that has been revived in much the same form by proponents Paley’s subsequent assertions that neither imperfections nor of “intelligent design.” Specifically, Paley points out that ambiguous—or even nonexistent—functions refute the the watch exhibits an irreducibly complex organization that thesis of design for the origin of complex, (mostly) was obviously constructed to perform a specific function. functional objects or organs. In this sense, Paley could be Remove or rearrange any of its intricate inner workings, said to adhere more closely to the analogy with human and the watch becomes barely more effective at keeping artifacts than do many of his present-day counterparts: time than the rock formerly dismissed with a kick.5 From Neither, secondly, would it invalidate our conclusion, this, Paley concludes that that the watch sometimes went wrong, or that it ...the inference, we think, is inevitable, that the watch seldom went exactly right.