Teleological Argument

“It is more likely that the universe was the result of chance than that it was designed.” Discuss [40]

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The teleological argument is the oldest and probably the most persuasive argument for the existence of God.  Starting with observations of order and/or purpose in the universe, it reasons that these qualities cannot arise naturally and must have been caused by an intelligent designer… God.  Aquinas’ version of the argument, his Fifth Way, drew on Aristotle’s worldview and likened natural object fulfilling their telos to arrows hitting a target; just as an arrow doesn’t strike true without an archer to let it loose, so natural objects can’t fulfil their telos by chance and their doing so makes the existence of an intelligent designer “which everybody calls God” necessary.  Of course Darwin’s discovery of evolution through natural selection provides a compelling natural explanation for the existence of what appears to be order and purpose without the need to hypothesise an intelligent designer-God, but Paley’s development of the argument in Natural Theology shows that even this did not undermine the attempt to use design to argue for God.  This is because many people misunderstood Darwin’s theory, assuming that the end-point of human consciousness was fixed and that evolution operates through chance, both of which made design seem more probable than natural processes as an explanation.  The fact that these misunderstandings persist is demonstrated by Tennant’s use of them in his teleological arguments in 1930 and more recently by the glut of modern fine-tuning and intelligent design arguments, mostly presented at the behest of the Discovery Institute and via fellows of its Center for Science and Culture.  It follows that despite the persistence of design arguments for God, it is far more likely that the universe results from chance – or at least from the “designs” of natural processes – than that it was designed by an intelligent-designer-God.

In modern times it was David Hume who first identified the flaw in the design argument through his character Philo in “Dialogues Concerning Natural Religion” (1779).  In Part VIII Philo draws on the thinking of Epicurus to ask why the appearance of order and purpose in nature could not be the result of chance in an infinite universe.  He points out…“the universe goes on for many ages in a continuous series of states of chaos and disorder. But couldn’t it happen that it eventually settles down, not so as to lose its motion and active force (for we are assuming that that is inherent in it), but so as to preserve a uniformity of appearance through all the hubbub of its moving parts?” This suggests that if the universe is truly infinite, meaning that all possibilities have been realised, then the possibility of part of the universe being ordered and purposeful would have been realised as a result of chance and not design.  Of course the Big Bang Theory seems to falsify Hume’s assumption that the Universe is infinite in the sense that all possibilities have been realised.  The Standard Model of Physics posits a hard beginning to time and space only 13.7 billion years ago, meaning that only some possibilities have been realised, although others will continue to be realised until the universe collapses.  Given this, it seems less likely that we inhabit a patch of order and purpose that has been generated by chance.  Nevertheless, this underestimates the scale of the universe, which is truly infinite… despite having a hard beginning, an edge and shape and continuing to expand.  It also applies a dated Newtonian worldview to a Universe that we now know resists such a characterisation.  Nobel Prize winning Physicist Steven Weinberg has cast doubt on the Cosmological Principle on which the Standard Model depends and which assumes that the part of the universe we see is a fair sample, whose laws and characteristics reflect laws and characteristics everywhere.  This supports Hume’s point that the design argument relies on the Fallacy of Composition and that conclusions about this part of the universe cannot automatically be extrapolated to the whole universe.  Hume’s character Philo asked “can it be proper to argue from parts to the whole? Doesn’t the great disproportion ·between part and whole· bar all comparison and inference? From observing the growth of a hair, can we learn anything about how men come into being? Would the way a leaf blows—even if we knew this perfectly—teach us anything about how a tree grows?”  And it seems that our 21st century appreciation of the scale and character of the universe only makes his questions more apposite.  So, Hume’s suggestion that the order and purpose we see in our part of the universe is not typical and the result of chance in an infinite universe rather than design has survived the advent of modern Cosmology.  Thus it follows that despite the persistence of design arguments for God, it is far more likely that the universe results from chance than that it was designed.

In Part II of “Dialogues Concerning Natural Religion” Hume’s character Philo went on to ask how we can hope to pronounce about the characteristics of the whole universe from our own, still very limited, experience.  He pointed out how “A very small part of this great system of the universe, during a very short time, is very imperfectly revealed to us” asking “Do we then pronounce confidently about the origin of the whole?” Philo also asks whether the appearance of order and purpose might not be a property of how we see things, rather than how they really are, not least because of the many examples of disorder and chaos in nature, later documented by Darwin and JS Mill as reasons why they cannot agree that nature suggests an intelligent designer-God.  These observations of Hume’s are again supported by modern scientific developments.  Psychology has documented how the human mind is predisposed to see patterns (order) and faces (purpose) even where they do not exist; the phenomenon is called pareidolia and so common is it that the famous Rorschach inkblot tests rely on it.  Further, psychology has documented how we are subject to Confirmation Bias, being more likely to see, notice and remember experiences which confirm our existing beliefs than those which challenge them.  Given these tendencies, Hume’s suggestion that our impression of order and purpose existing everywhere and confirming our existing belief in a supernatural deity seems very plausible.  Of course, accepting Hume’s point has wider consequences than undermining the design argument for God’s existence.  If we accept that the process of spotting patterns and extrapolating from them “universal natural laws” leads to flawed conclusions, then the whole scientific method is in jeopardy.  The fact that this same method has yielded technological advances and results such as the laptop on which I am typing this essay does suggest that Hume’s point is unreasonably sceptical and that his character Cleanthes was onto something when he called Philo’s reasoning “the most perverse and obstinate metaphysics.”  Yet there is an important difference between science and religion when it comes to the use of inductive reasoning; whereas scientific laws are always falsifiable and produce useful results, God is not a falsifiable hypothesis and the results of believing in him are mixed at best in terms of their usefulness.  As Richard Dawkins has pointed out, religion “teaches us to be satisfied with not understanding the world…” so that “faith is a cop-out.”  It follows that fear of the effects of Hume’s point on science is not a good reason to reject Hume’s point, so it is more likely that the universe results from chance than that it was designed.

Of course, recent arguments from Intelligent Design argue that it is more likely that the universe was designed than that it occurred by chance.  For example, William Dembski argues that any natural structure whose existence passes the (somewhat arbitrary) “Universal Probability Bound” of 1 in 10150  is more likely to have been designed than to have occurred naturally “by chance”.  He uses examples of structures such as amino-acids and DNA which exhibit Specified Complexity, being both finely tuned and extremely complex, whose existence he suggests strains the credibility of naturalistic explanations.  Michael Behe agrees, suggesting that there are irreducibly complex biochemical structures which resist standard evolutionary explanations and are suggestive of an intelligent designer.  Nevertheless, statisticians and biochemists have united in their criticism of Behe and Dembski, arguing that they have made basic errors in their science.  In particular, Behe ignores the possibility that structures can evolve out of as well as into existence, making “irreducibly complex” structures explainable through standard evolutionary theory.  Further, it is wrong to suggest that evolution itself operates entirely randomly; in fact it has a “design” of its own although not an intelligent one, in seeking to replicate genes.  Given this the result; a universe saturated with dysteleological suffering, makes sense.    As Dawkins wrote “The total amount of suffering per year in the natural world is beyond all decent contemplation… The universe that we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but pitiless indifference.” [River Out of Eden]  This suggests that despite the persistence of design arguments for God, it is far more likely that the universe results from the pitiless “design” of evolution than that it was designed by any intelligent-designer God.

On a wider scale, recent fine-tuning arguments argue that the precise conditions necessary for the Big Bang to produce a life-sustaining planet like ours are so improbable that they are more likely to have been designed than to have occurred by chance. For example, Alister McGrath focuses on the fine-tuning of carbon, writing “[The entire biological] evolutionary process depends upon the unusual chemistry of carbon, which allows it to bond to itself, as well as other elements, creating highly complex molecules that are stable over prevailing terrestrial temperatures, and are capable of conveying genetic information (especially DNA). […] Whereas it might be argued that nature creates its own fine-tuning, this can only be done if the primordial constituents of the universe are such that an evolutionary process can be initiated. The unique chemistry of carbon is the ultimate foundation of the capacity of nature to tune itself” [A fine-tuned universe] In 1989 John Gribbin and Martin Rees wrote a detailed defence of the fine-tuning argument in their book Cosmic Coincidences. They argued: “The conditions in our Universe really do seem to be uniquely suitable for life forms like ourselves, and perhaps even for any form of organic complexity. But the question remains – is the Universe tailor-made for man?”  yet Richard Dawkins has rejected this line of argument, pointing out that the improbabilities attached to naturalistic explanations assume that a life-sustaining planet like ours was always bound to happen.  If we embrace the possibility that it was far more likely that no such planet would ever exist, we will really begin to appreciate that “We are going to die, and that makes us the lucky ones. Most people are never going to die because they are never going to be born. The potential people who could have been here in my place but who will in fact never see the light of day outnumber the sand grains of Arabia. Certainly those unborn ghosts include greater poets than Keats, scientists greater than Newton. We know this because the set of possible people allowed by our DNA so massively exceeds the set of actual people. In the teeth of these stupefying odds it is you and I, in our ordinariness, that are here. We privileged few, who won the lottery of birth against all odds, how dare we whine at our inevitable return to that prior state from which the vast majority have never stirred?” [Unweaving the Rainbow] So, wouldn’t design be more probable than this degree of “luck”?  For Dawkins, absolutely not!  To hypothesise the existence of a supernatural, intelligent designer God, let alone one with the many attributes of the Christian God, only multiplies the improbabilities. Who would have designed and fine-tuned this God after all?  Suggesting a whole new category of “necessary existence” without supporting evidence to solve this question makes God far more improbable than any alternative and. as Ockham’s razor suggests, the simplest solution of science is the best, even when that solution is not very simple!

In conclusion, despite the persistence of design arguments for God, it is far more likely that the universe results from chance – or at least from the “designs” of natural processes – than that it was designed by an intelligent-designer-God. The continuing popularity of design arguments for God despite their obvious flaws stems from our reluctance to accept let alone confront the precarity of the human condition.

Critically compare the cosmological and teleological arguments for God’s existence. [40]

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St Thomas Aquinas presents five ways of demonstrating God’s existence based on observation in his Summa Theologica (1,2,3).  The first four of these ways are Cosmological arguments, reasoning from observations of movement, efficient causation, contingency and grades of perfection in the universe a posteriori to the conclusion that God as a Prime Mover, uncaused cause, necessary being and supreme perfection must exist.  The fifth way is a teleological argument, reasoning from observation of order and purpose (teleology) in the universe a posteriori to the existence of an intelligent designer “which is what everybody calls God.”  Clearly, Aquinas saw both Cosmological and Teleological Arguments as persuasive arguments for God’s existence, however the Teleological Argument offers better support to the God of Christian worship than the Cosmological Argument does.

David Hume criticised cosmological arguments in his Dialogues Concerning Natural Religion (1779).  His character Philo pointed out that it is based on limited observations of the universe.  For all we know there might be uncaused things out there… as indeed Quantum Physics and Particle Physics has since shown to be the case.  Further, the argument is based on the fallacy of composition, the assumption that just because the parts of the universe have a cause that the whole universe must have a cause.  As Bertrand Russell later pointed out; just because all men have mothers doesn’t mean that the human race has a mother, it could be that the universe is a “brute fact”.  Hume’s criticisms of the cosmological argument are difficult to overcome.  While it is fair to say that Hume’s claims about the limitations of human observations as the basis for knowledge about natural laws are just as much of a problem for science as they are for religion, his other criticisms hit hard.  In truth, the universe might, for all we know, be uncaused or be its own cause.  It is fair to ask why what is true of the part should also have to be true of the whole.  Although William Lane Craig argues that the cosmological argument – at least in his own Kalam version, which stops short of concluding that the Prime Mover is “what everybody calls God” – is the best support for the reasonableness of faith, his claims about the impossibility of an actual infinite and about the Big Bang theory needing a cause have been shown to be mistaken by critics such as Erik Sotnak and Stephen Hawking.  While the cosmological argument might superficially seem to be supported by Big Bang theory, in reality Cosmology shows that the idea of causation cannot apply outside the space-time matrix of our universe.  While it seems incredible, as Terry Pratchett quipped, science proposes that “in the beginning there was nothing, which exploded.” It is clear, therefore, that the cosmological argument is not persuasive. 

Hume’s character Philo also attacked the teleological argument in the Dialogues, criticising the tendency to make the argument using inappropriate analogies and pointing out apparent imperfections in the design of the universe, which might undermine the idea that the designer would be perfect.  Later, both Charles Darwin and JS Mill pointed out the brutality in nature and reasoning that an Ichneumon wasp could not have been designed by the God of Christianity.

“Nearly all the things which men are hanged or imprisoned for doing to one another are nature’s everyday performances.”  Mill: Three Essays on Religion

Nevertheless, these critics all failed to exclude the possibility that the universe could be designed to contain evil for some morally sufficient reason.  As St. Augustine argued, it could be that natural evil in the world is a just punishment for sin.  Moral evil could be the necessary bi-product of human freedom.  Evil does not necessarily undermine the claim that the universe was designed by God.  Alternatively, as John Hick argued, suffering could be positively created by God to afford the opportunity for “soul-making” with any injustices being accounted for through an afterlife.  Further, there are versions of the teleological argument which do not rely on spurious analogies – such as FR Tennant’s aesthetic argument and anthropic principle.  These are more persuasive than the cosmological argument.  Hume’s criticisms fall short of undermining Tennant’s claim that God is needed to explain beauty and human consciousness in the universe and evolution through natural selection fails to explain these aspects of the universe adequately either.  Modern Intelligent Design arguments – such as those proposed by Michael Behe from irreducible complexity and by William Dembski from specified complexity – show that evolution cannot provide the complete explanation that atheists like Richard Dawkins claim it can.  While Paley’s argument in Natural Theology can be rightly criticised for its use of the famous watchmaker analogy, its appeal to our incredulity at the scientific claim that all this could have arisen by chance is powerful.  To accept that evolution through natural selection can provide a complete explanation of the universe and that there is no intelligence guiding it is difficult to accept.  Take the Japanese puffer-fish… can evolution really account for the extent of the intricacy and beauty of its designs?  It is clear, therefore, that the teleological argument is more persuasive than the cosmological argument.

In addition, even if the cosmological argument was persuasive, it would only serve to demonstrate the existence of a Prime Mover, an uncaused cause, a necessary being outside time and space.  It is not easy to see how this being could be the God of Christian worship.  Aristotle stopped short of claiming that the Prime Mover could be a God in any normal sense, its power being limited to supporting the existence of all contingent things and its goodness being limited to being fully actualised and containing no potential. How could a God who is outside time and space act to create the universe when there could be no time before during or after his action and when there would be no space to differentiate the creation from the creator?  Both human understanding and the language which tries to communicate it struggles to cope with objects outside the space-time matrix which bounds our experience.  It might, of course, be fair to say that human understanding and language cannot expect to be able to comprehend or describe God.  Yet, without the ability to claim that God exists, that God is the all-powerful creator and that God is good with some content, it is difficult to see how Religion could prosper.  St. Thomas Aquinas attempted to show how human language could be used to describe God in positive terms as analogies, but even he admitted that he content of attributes such as goodness must needs be limited and cannot be understood in the same way as human goodness.  The teleological argument, by contrast, does not rely on locating God outside time and space.  As the intelligent designer, it seems likely that God would have defined the purpose of the universe from within the same logical framework which governs its operation today.  In this way, God’s power and goodness have real content, as they relate to how He created the complex order and purposiveness we can observe.  It follows that the teleological argument offers better support for the God of Christian worship than the cosmological argument does.

In conclusion, the teleological argument offers better support for the God of Christian worship than the cosmological argument does.  Clearly, the teleological argument relies on the possibility of defending God’s goodness and power against charges of creating or allowing evil and suffering, but it is still more persuasive than the cosmological argument.  Even Immanuel Kant, who rejected all the classical arguments for God’s existence in his Critique of Pure Reason, saw the age and persistence of the teleological argument as pointers to its status as the most powerful of the arguments for God’s existence.

“The arguments for the existence of God do nothing to support the God people actually worship” Critically evaluate this statement. [40]

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It is fair to say that the arguments for the existence of God fail to prove the existence of God.  The ontological argument is the only one that sets out to deliver an a priori proof and as Immanuel Kant argued in his “Critique of Pure Reason” (1781) it is “so much labour and effort lost“.  It is equally fair to say that the inductive arguments for God’s existence, both Cosmological and Teleological, fail to demonstrate the existence of God conclusively.  Criticisms leveled at the arguments by David Hume, amongst many others, point out their several flaws and fallacies.  Nevertheless, to say that the arguments do nothing to support the God people worship is a big overstatement. [THESIS]

The ontological argument, for all it seems to rely on bad grammar by treating existence as a perfection and a predicate, remains a powerful thought-exercise for those who already believe.  For one example, Karl Barth – who utterly rejected Natural Theology – appreciated the spiritual depth of Anselm’s argument.  In “Faith Seeking Understanding” (1931), he suggested that Anselm was not trying to prove that God exists, but was rather meditating on how God exists.  For Barth “that than which nothing greater can be conceived of” is a revealed name of God which contains something of God’s nature.  Reflecting on it and seeking deeper and deeper understanding is an essential faith-activity, which supports and enriches peoples’ relationship with the divine.  For another example, the mystic Thomas Merton was inspired by Anselm’s “faith seeking understanding” and exploration of how God necessarily exists as his starting point in opening his mind to insights about God from all religions [Faith Seeking Understanding: Theological Method in Thomas Merton’s inter-religious Dialogue by Ryan Scruggs, Journal of Ecumenical Studies 46:3 2011].  Both Barth and Merton used Anselm’s ontological argument to support their understanding of and enrich their faith in God, in their different ways.  It is wrong to say then that this argument for God’s existence does nothing to support the God that people worship. [REASON]

Cosmological arguments point to God as the Prime Mover, uncaused cause and Necessary sustainer of the universe.  For St. Thomas Aquinas, these arguments show a posteriori how God must be eternal in the sense of being outside time and space, which in turn distances God from creation and limits how He can be understood to know and intervene in what happens.  On one level, this suggests that the statement “the arguments for the existence of God do nothing to support the God people actually worship” is reasonable.  Omnipotence – in the sense of being able to work miracles – omniscience – in the sense of being able to respond to prayer – and benevolence – in the sense of understanding and having a personal relationship with worshipers – are all crucial to the Christian concept of God.  Aquinas’ God, although well-supported by the cosmological argument – is not obviously the God most Christians worship.  Nevertheless, Aquinas’ ways to God  only serve as a preamble to the substance of his argument in the Summa Theologica, which seeks to show why the necessary being supported by observational evidence must be the God Christians worship.  It is true that for Aquinas, the meaning of divine attributes like omnipotence, omniscience and omni-benevolence has to be understood analogically and cannot be understood literally, univocally.  Yet he also maintains that there is real and positive meaning in claims such as “God is good”, which are central to Christian worship.  It is clear that Aquinas’ cosmological arguments establish the necessary existence of the God Christians worship, even if they do not by themselves explain how or why God must be as Christians worship Him. Therefore it is an overstatement to say that the arguments do nothing to support the God people worship.  [REASON]

Teleological arguments suggest a God who is more obviously involved in His creation than either ontological or cosmological arguments.  William Paley used the analogy of watch and watchmaker to describe the close relationship between creation and creator.  Even Aquinas’ fifth way suggests that God is the intelligence that directs inanimate things towards their ends (telos) “as an arrow is given flight by the archer.”  In “Dialogues Concerning Natural Religion” David Hume’s character Philo is right to point out that the observable evidence of creation includes things that seem poorly designed or even cruel and might more properly suggest an imperfect deity, or multiple deities, than the perfect God of Christian worship because in practice, most Christians are resigned to worshipping a God who at least allows evil and suffering, albeit for a morally sufficient reason.  For example, John Hick argued that God created human beings in His own image, with only the potential to grow into His likeness after passing through the “vale of soul-making” that is human life.  In “Evil and the God of Love” (1966) he argued that belief in a God who allows people to suffer for the spiritual benefit that they (or other people) may gain from that experience is compatible with Christian faith and worship.  After all, in the Garden of Gethsemane Jesus called out to “Abba, Father…” asking that “this cup of suffering” be taken away by God’s will.  God did not act to prevent his suffering, even when Jesus called out “Eloi, Eloi, lama sabachthani, which means “my God, my God, why have you forsaken me?” (Mark 15:34)  Christians do not worship a God who doesn’t know about or understand suffering and nor do they worship a God who even tried to create a world with no potential for horror… he placed the tree in the garden after all.  It follows that teleological arguments support the God Christians actually worship, “the God of Abraham, Isaac and Jacob” far more than they support the perfect “God of the philosophers”, to use Blaise Pascal’s distinction.  [REASON]

Pushing this line of reasoning might give more credence to the claim that “the arguments for the existence of God do nothing to support the God people actually worship.”  Certainly, ontological and cosmological arguments – if they are sound and cogent respectively – support the existence of a perfect God.  Anselm defined God as “that than which nothing greater can be conceived of,” Descartes defined God more straightforwardly as “Supreme Perfection” and Plantinga similarly defined God as a “maximally great being.”  Aquinas’ cosmological arguments support a God who is the Prime Mover, uncaused causer and de re necessary being sustaining the universe.  By definition, such a God is 100% actual and has no potential, is outside time and space and cannot change.  Aquinas successfully showed that this God must be all-good.  In the Aristotelian sense defining goodness in terms of fulfilling potential and evil in terms of falling short, a God whose nature is to unchangingly be 100% actual cannot be other than all-good.  Further, Aquinas successfully showed that this God must be all-powerful and all knowing in the sense of being the primary cause of everything that exists, what is responsible for things being as they are and no other way.  Nevertheless, Christians do not worship a God who is perfect in this abstract way.  The Bible casts God as the creator of everything, but a creator who has a defined purpose for each aspect of his creation (Genesis 1:27-31) and who can and does interact with and respond to people both in Eden (Genesis 2-3) and subsequently throughout Biblical History.  In Genesis God appears to Abraham – albeit in a mysterious way – then Jacob wrestles with God, mistaking him for a man.  In the New Testament God speaks to acknowledge Jesus as His son, Jesus calls God Abba (literally Daddy) and claims “the father and I are one” (John 10:30) before dying horribly on the cross.  It is difficult to claim that the God Christians worship is the abstract if all-powerful, all-good God supported by ontological and cosmological arguments.  [DISAGREE]  Nevertheless, the Nicene Creed affirms that the Christian God is the perfect God of the philosophers as well as being the God of Biblical history.  God is the creator both of what is “seen and unseen”, Jesus’ incarnation is part of the original creation, willed from the beginning of time rather than being a response to circumstance.  God speaks but through the prophets, acts but through the agency of the Holy Spirit.  It is fair to say that the Christian God, the God Christians actually worship, is paradoxical and mysterious but it is not fair to say that the God supported by the arguments is not the God people actually worship.  [EVALUATION]

In conclusion,  to say that the arguments do nothing to support the God people worship is a big overstatement. [THESIS] While it is true that the ontological argument and the cosmological argument point towards an abstract, perfect God which demands theological explanation to show as the God of Biblical history, it is unfair to say that the arguments do nothing to support the God people actually worship.  Certainly, as Karl Barth and Thomas Merton pointed out of the ontological argument, they are useful in enriching and sustaining faith by supporting deeper understanding of God’s nature.  Certainly, as Reformed Epistemologists like William Lane Craig have argued, cosmological arguments help believers to “defeat the defeaters” and show that faith – while not based on or dependent on arguments – is not irrational despite that.  In addition, as St Thomas Aquinas reasoned, a proper understanding of religious language shows that the attributes of the God supported by the arguments and the attributes of the God actually worshipped by Christians share meaning, even if that meaning is of a specific and limited type.  Finally, teleological arguments offer essential support for the God people actually worship, showing His creative care and causing people to reflect on the existence of evil and suffering in a way that is essential to Christian worship.  Without appreciating the reality of suffering – and rational reflection on God as designing intelligence encourages this – Christians could not understand the importance of the atonement or stake their lives on the hope for salvation, and in this case there would be little point in worship.  [Significance]

 

 

To what extent does Hume successfully argue that observation does NOT prove the existence of God? [40]

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David Hume criticized all the classical arguments for God’s existence through his book “Dialogues Concerning Natural Religion“, which was published after his death in 1776.  The Dialogues take place between four characters, with the interaction between Demea, a deist, Cleanthes, a theist and Philo, a sceptic, being the focus.  Most scholars see Philo as a vehicle for Hume’s own views and arguments and because of this, A Level textbooks list simplified versions of Philo’s criticisms of the classical Cosmological and Teleological arguments from the Dialogues and credit them to Hume.  It is probably fair to say that if the textbook was the sum total of one’s reading it would be easy to conclude that Hume was unsuccessful in arguing that observation does not prove the existence of God, in every case other than the criticism that the arguments do not support belief in all the attributes of the Christian God, which Christians accept in any case.  Few believers suggest that arguments for God’s existence are sufficient support for Christian faith in themselves. For example, when the textbook suggests that Hume asks “and what caused God” in response to Aquinas’ Cosmological Argument, it would be natural to criticize Hume for missing the more subtle point that Aquinas is making about God’s necessary existence.  Nevertheless, if one reads “Dialogues Concerning Natural Religion” it becomes clear that the criticisms Hume places in the mouth of Philo are subtle and support the conclusion that Hume was indeed successful in arguing that observation does not prove the existence of God.

In Part VIII of the Dialogues, against a very basic form of the Cosmological Argument for a “voluntary agent or first mover” Philo points out that nobody can know whether all things in the universe have a cause, that it is fallacious to make the leap from all things in the universe being caused to proposing that the universe itself has a cause.  He points out that for all we know some things in the universe could exist or happen without a cause… why not some natural process rather than a supernatural, divine agent deciding to create.  He argues in favour of the Epicurean Hypothesis, the idea that the universe could be actually infinite, which was the commonly accepted scientific world-view at the time, rooted in Aristotle.

“But this presupposes, said Demea, that matter can come to move without any voluntary agent or first mover.  And where’s the difficulty in that? replied Philo“

Superficially, Philo’s criticisms appear ill-founded.  William Lane Craig and other Christian apologists argue that an actual infinity of causes is impossible and suggest that Big Bang theory supports them in the need for an absolute beginning for the universe as a whole and so in the need for an uncaused cause.  However in fact, modern Physics supports Philo’s reasoning.  Although it is true that the standard model suggests that time and space had a beginning – the Big Bang – no Cosmologist today sees the Big Bang as the absolute beginning in the sense of needing a divine cause to explain it.  Stephen Hawking responded to a question about whether the universe needed a cause by saying that the question makes no sense to ask.  True, causation applies within time and space, but within the singularity there is no sense in which it could apply.  Cause and effect imply time and space; without either it makes no sense to think in terms of causation.  Further, research confirms the hypothesis that (at least at the Planck scale) things in the universe exist and happen without a cause and it is possible that the natural action of sub-atomic particles could account for the Big Bang.  Whatever the apologists claim, it seems that modern science supports Hume’s criticism of the attempt to prove God from observation and does not support the existence of God as the necessary uncaused cause.

In addition, through parts 8 and 9 of the Dialogues Philo makes the important point that…

“I won’t even allow any one part to justify conclusions about another part”

This is a point that builds on one he made in relation to the teleological argument in Part II

“can it be proper to argue from parts to the whole? Doesn’t the great disproportion between part and whole bar all comparison and inference?”

While superficially flippant, Philo’s point is actually subtle and far-reaching and extends beyond the point that the arguments from observation depend on the Fallacy of Composition.  Although it what is true of parts is not necessarily true of the whole, it still could be so the most damage that the classic textbook criticism of the Cosmological Argument could do is to point out that the conclusion needs more support, not that the argument has no merit.  In fact, Philo’s criticism of the Cosmological Argument is more damaging than the technical point about relying on the Fallacy of Composition.  He points out that the argument makes the massive assumption that the part of the universe we can observe is a fair sample, that the whole universe behaves as this part behaves, and that the way we see the universe is the way it really is.  The Cosmological Principle was first spelt out by Isaac Newton and Astronomer William Keel states that it…

“amounts to the strongly philosophical statement that the part of the universe which we can see is a fair sample, and that the same physical laws apply throughout. In essence, this in a sense says that the universe is knowable and is playing fair with scientists” [The Road to Galaxy Formation, 2006]

Following the discovery of Quantum Physics, science has had to abandon the Newtonian paradigm to the extent that today, the “Cosmological Principle”, the very principles of homogeneity and isotropy, are being questioned – even though that leads to the unwelcome conclusion that science is extremely limited in what it can claim to know about the universe.  Philosopher Karl Popper criticized the Cosmological Principle on the grounds that it makes

“our lack of knowledge a principle of knowing something”

concluding that

“the “cosmological principles” were, I fear, dogmas that should not have been proposed”

and since then some Physicists have come to similar conclusions, including Steven Weinberg.  Scientists might be as reluctant to accept the force of Philo’s argument as believers, but that doesn’t take away from the fact that there is no way to know that the way we perceive causation is actually what is happening or that the principle of causation that appears to apply here also applies everywhere in the universe, let alone to the universe as a whole.  Certainly, what is true of parts of the universe is not necessarily true of the whole of the universe – but further, it is not possible to say what is true of parts of the universe and let alone what might be true of the whole.  This argument of Philo’s alone shows that attempting to prove God from observation is impossible.

Further, also in Part 9 of the Dialogues, Philo attacks a version of the Cosmological Argument presented by Demea that echoes Jeremiah Clarke’s a priori argument. While not strictly an argument from observation, this version of the cosmological argument deduces God’s necessary existence and attributes from the contingent nature of other existences.  Nevertheless, unless one is an idealist, understanding what it means for other things to exist must depend on observation, so it is worth considering Hume’s refutation of this version of the argument here.  Although in 1996 Joseph K Campbell successfully argued that Philo fails to defeat this version of the Cosmological Argument – leaving open the possibility that God could be the necessary sustaining-cause of the universe – Philo’s point in asking why the cause of the universe would have to be intelligible renders Campbell’s argument in support of proving God from observation only a technical victory.  While it is true that there might be the necessary sustaining-cause of the universe, it is also true (as Philo contends) that it is not meaningful to claim that this sustaining cause has the attributes of the Christian God.  Jeremiah Clarke faced the same difficulties as Aquinas in trying to marry the attributes of a necessary being with those of the object of Christian faith.  Neither thinker manages to do more than imply that Christian faith is misplaced, because there is no way that the being indicated by contingent existence could create or act in the way that the God of Abraham and Isaac creates and acts, let alone provide hope for salvation and/or personal survival beyond death.  Nobody seriously claims that the Higgs Boson is omnipotent, let alone omniscient or omnibenevolent.  Nobody worships quarks.  Even if God might be whatever sustains the universe in being, there is no way to support religion on that basis.  Further, there is now a sensible natural explanation for the universe which obviates the need to call the necessary sustaining cause of the universe “God” and so muddy the waters of Cosmology with Theological assumptions and associations.  On this point also, despite Campbell’s work, Hume’s argument against proving God from observation has been vindicated.

Philo provides numerous other criticisms of the arguments from observation.  For example, through Parts II-V of the Dialogues, Philo criticizes versions of the Teleological Argument presented by Cleanthes, pointing out that the analogies Cleanthes employs are weak, that there is no way to establish that everything in the universe which appears to have order and purpose really has, and that (because like effects prove like causes) the universe suggests a cause or designer who is far from perfect, not necessarily single and either way a long way from being the God of the Christian religion.

“what shadow of an argument, continued Philo, can you produce, from your hypothesis, to prove that God is one being? A great many men join together to build a house or ship, to found and develop a city, to create a commonwealth” … “For all he knows, the world is very faulty and imperfect by certain higher standards… only the first rough attempt of some infant god, who afterwards abandoned it, ashamed of his poor performance… the work of some dependent, inferior god, whose superiors hold it up for ridicule… produced by some god in his old age and near-senility, and ever since his death the world has continued without further guidance, activated by the first shove he gave to it and the active force that he built into it.” (Part V)

As JCA Gaskin has argued, Philo’s individual criticisms are compelling, highlighting one by one the flaws and leaps in reasoning in two distinct versions of the teleological argument.  They are far more serious than Philo’s flippant tone might suggest, as they demonstrate how far short of proving the existence of the Christian God classical arguments fall and how much believers must depend on revelations and authority. 

In addition, the broader criticism implicit in Philo’s line of argument is conclusive; despite the multi-layered theodicies of St Augustine and St Thomas Aquinas, and the less complete but more pastorally satisfying Irenaean theodicy proposed by John Hick, there has as yet been no satisfactory explanation of why a perfect creator would create an imperfect world.  As JL Mackie observed in his essay “Evil and Omnipotence” (1955), St Augustine’s Free Will Defence fails to explain why an omnipotent God could not create free beings who always choose to do what is right.  Further, St Thomas Aquinas’ approach to redefining evil as a lack of good and God’s attributes as meaning that He can do only what is actually possible and compatible with His wholly simple nature fails to do justice to the reality of peoples’ faith.  The problem of evil and suffering remains the most persuasive objection to attempts to argue to the God of Christianity from observation.

In conclusion, Hume’s arguments – as proposed through the character Philo – successfully show that attempts to prove God from observation all fail.  The Dialogues Concerning Natural Religion present a persuasive case against belief in any sort of God which goes well beyond the petty point-scoring that the genre and style of the piece suggests.  Nevertheless, while extremely persuasive, Philo’s line of argument is a skeptical one and there significant implications flow from accepting it.  Philo casts doubt not just on belief in God, but also on the human ability to know that what we observe is really what we observe and on the human ability to deduce natural laws of any kind on the basis of observation.  By this argument, people wouldn’t just have to drop their belief in God but also their belief in science, something which few people are willing to do.  This, perhaps, is the best objection to Philo’s arguments against the attempt to prove God from observation, that they surely and persuasively lead people into a pit of despair.  However, it is not reasonable to conclude from this that the arguments from observation prove God or that Hume’s criticisms, as presented through Philo, are less than successful.

Critically evaluate the classical teleological argument (40)

/ vardycharlotte / Leave a comment

Teleological arguments move from observations of purposiveness in the universe to the conclusion that God is the best explanation for the existence of the universe as it is. The Greek word TELOS originally referred to the target in archery and Aquinas, in his fifth way to God plays on this imagery by selecting an arrow as his analogy for purposiveness in the universe.  He wrote…

“We see that things which lack intelligence, such as natural bodies, act for an end, and this is evident from their acting always, or nearly always, in the same way, so as to obtain the best result. Hence it is plain that not fortuitously, but designedly, do they achieve their end. Now whatever lacks intelligence cannot move towards an end, unless it be directed by some being endowed with knowledge and intelligence; as the arrow is shot to its mark by the archer. Therefore some intelligent being exists by whom all natural things are directed to their end; and this being we call God.”

The argument has its roots in Aristotle, who wrote of things in the universe and the universe as a whole advancing towards fulfilling a FINAL CAUSE, a telos or purpose, and suggested that there must be some mysterious force guiding this process and supporting the tendency towards fulfilment, goodness, in everything we see. It has been advanced many times and in many different variants since Aquinas, but it is characterised by arguing qua purpose and by the use of analogies to emphasise the improbability of efficient organisms and processes arising by chance. The classical teleological argument fell out of favour in the mid-19th century as Charles Darwin’s theory of evolution by natural selection was accepted as offering a natural explanation for the appearance of purposiveness in things.  This essay will argue that while evolution remains the best reason for rejecting teleological arguments, there are other good reasons for rejecting them as well.

In 1779 David Hume’s Dialogues Concerning Natural Religion was published.  It contained a complete, and eminently readable, refutation of the classical teleological as well as other arguments for the existence of God.  Hume’s character Cleanthes sets up the argument, using the analogy of a machine and its maker(s)…

“Look round the world, contemplating the whole thing and every part of it; you’ll find that it is nothing but one big machine subdivided into an infinite number of smaller ones… The intricate fitting of means to ends throughout all nature is just like (though more wonderful than) the fitting of means to ends in things that have been produced by us”[2]

He concluded…

“Since the effects resemble each other, we are led to infer by all the rules of analogy that the causes are also alike, and that the author of nature is somewhat similar to the mind of man, though he has much larger faculties to go with the grandeur of the work he has carried out.”[3]

In 1803 Cleanthes’ argument was famously reproduced by William Paley, who used the analogy of a watch and watchmaker, concluding that from the similarity between the watch, natural organisms and even the universe as a whole…

“the inference, we think, is inevitable, that the watch must have had a maker”

The arguments presented by both Cleanthes and Paley are arguments from analogy and, as such, both can only be as strong as the analogies they employ.  As Hume’s character Philo observed, Cleanthes (and reasonably Paley) relies on a “very weak analogy”.  He reduces the argument to absurdity by suggesting alternative analogies – a house, legs, a ship – and concludes that

“Doesn’t the great disproportion ·between part and whole· bar all comparison and inference? From observing the growth of a hair, can we learn anything about how men come into being? Would the way a leaf blows—even if we knew this perfectly—teach us anything about how a tree grows?”[5]

As Philo points out, there is a great dissimilarity between any analogy and the universe as a whole, and this is not just one of degree as Paley suggests in Chapter II Part V of Natural Theology.  It is not reasonable, even from the perspective of the 19th Century Newtonian world-view, to suggest that

“Thought, design, intelligence, such as we discover in men and other animals, is just one of the springs and forces of the universe…”

It follows that the analogies commonly employed to persuade readers by proponents of the classical teleological argument add nothing to the strength of their argument as a whole.

Apart from the analogies, the classical teleological argument can be summarised through this syllogism…

P1.  Natural organisms act towards an end

P2. Natural organisms cannot act towards an end independently

C1. There must be some intelligence causing natural organisms to act towards an end

C2. This intelligence is what everybody calls God.

Clearly, both propositions can be disputed.  There are many examples of inefficiency in nature and even where purposiveness is apparent, this can now be explained by evolution through natural selection.  Yet the most problematic step in the argument is the secondary conclusion, that the “intelligence” is what everybody calls God.  Surely God is usually seen to be whatever caused the universe to be the way that it is, however the qualities of omnipotence and omnibenevolence are usually imputed to God and there can be no doubt that the universe contains many examples of gratuitous innocent suffering.  As Tennyson wrote “nature is red in tooth and claw”[7] – Darwin himself and later John Stuart Mill remarked how implausible it is to suggest that a loving God could create a world in which animals must kill each other to survive.  To many people this world seems more like the project of a sick science-fiction project than of the God of Christianity! Is it not reasonable to suggest that this universe could be the first, “rude effort of an infant deity”[8]?  This would better account for the imperfect characteristics of the universe as we find it than suggesting that it is the perfect product of a perfect God.

Further, there is nothing to suggest that the intelligent designer of the universe would have to be single.  As Philo observed…

”a great number of men join in building a house or a ship, in rearing a city, in framing a commonwealth; why may not several deities combine in contriving and framing a world?” 

This would render the secondary conclusion of the classical teleological argument, that the intelligence behind the universe could be called God, redundant.   No Christian – and few members of other faiths – could accept that multiple Gods could have had a hand in creating the universe; to do so would place limits on the power of each, reducing the God’s to the status of spirits or demons. Philo admits that supposing the existence of multiple deities would be to “multiply causes unnecessarily” in a way that is philosophically unsound, and yet he argues that although it would be just as wrong to say that there must be one God as to say there must be multiple Gods.  There is no way that human beings can know one way or the other.  The secondary conclusion is not adequately supported by the premises and so the argument fails in its objective of being a demonstration of the existence of God.

Of course modern Intelligent Design arguments get around this difficulty by eliminating the secondary conclusion and leaving just the inference that God might be the intelligence that the argument has concluded to exist.  Scholars such as Michael Behe and William Dembski point out the inadequacy of Darwin’s Theory of evolution through natural selection as a complete explanation for the universe.

Michael Behe points to irreducible complexity in microbiological organisms, such as the flagellum of certain bacteria, suggesting that linear evolution cannot account for complex organisms in which all parts need to work together for any function to be performed.  Individual parts of irreducibly complex organisms are, Behe claims, without purpose unless all the other parts are present and correctly arranged.  How could things evolve all at once to be this way?  An intelligence is needed to explain these structures, some of which are the very building-blocks of life.  It may be that evolution explains some aspects of nature, but without hypothesising intelligent design scientists cannot explain all of nature[9].  Of course Behe’s argument is rejected by most mainstream scientists, who point out that parts of organisms can evolve out of existence as well as into existence.  It could well be that each part of an irreducibly complex organism had a purpose in relation to the organism as it was in a previous stage of evolution, but as the new purpose evolved the old one became redundant and other parts of the structure with no new purpose did not survive.  Most critics of Behe claim that he has either misunderstood the science and is making invalid claims to irreducible complexity or claim that he is too hasty in his conclusion that an intelligent designer hypothesis is required. If they are right, as I am persuaded that they are – the critics vastly outnumber and outrank his supporters – then Behe’s modern version of the teleological argument fails, even with its scientific examples and lack of secondary conclusion.

Like Behe, William Dembski proposes that an intelligent designer hypothesis is needed to account for the characteristics of natural organisms.  Dembski appeals to what he calls “specified complexity”, instances where incredibly complex structures occur where each part of the whole is finely tuned for its job.  The obvious example is DNA – each “letter” of a strand of DNA, ACGT, has a specific role and there are millions and millions of them in the most basic genome. As a statistician, Dembski calculates the probability of such specified complex structures arising by chance and concludes that where the probability surpasses what he calls the “universal probability bound” (10×1150) then it is incredible to suppose that it happened by chance rather than design[10].  Dembski has as many critics as Behe.  Again they claim that he has either misunderstood the science or jumped to his conclusion of intelligent design too hastily.  Specifically, Dembski starts with specified complex structures as they are today and assumes that they were always meant to be this way when he calculates probability, which ignores the possibility that they genuinely exist by chance and could very well not exist or exist differently.  Scientists are beginning to recognise that DNA contains a huge percentage of redundancy – code that was once relevant but which has been rendered redundant by new code which has been added as species evolve.  Certainly, cutting out a section of DNA will change the efficacy of the whole strand, but that is because redundant elements are woven into the fabric of the whole.  Take Brighton Pavilion as an example – its structure is highly complex and each bit is integral to the whole.  This is not as a result of design but because the building was remodelled through several different designs and the present building incorporates and relies on elements of older buildings.  The guttering runs inside the walls and now holds up the ceilings in some places.  Start taking things away – even things as small as layers of wallpaper or light-fittings – and the whole building starts to crumble.  As Richard Dawkins has observed, it is more reasonable to suggest that specified complex structures did arise naturally, over extended periods of time and as a result of environmental pressures, than to claim that they were created as they are my a mysterious “intelligence”[11].  Such a conclusion multiplies improbabilities and by the scientific and philosophical principle of Occam’s Razor, is illogical.  It follows that Dembski’s argument fails as well.

In conclusion it seems that the classical teleological argument fails to demonstrate the existence of God.  The versions proposed by Aquinas, Cleanthes and William Paley are undermined by their use of weak analogies, their propositions are questionable and the conclusions, both that an intelligence and that God exists, are not adequately supported by those propositions.  Most persuasively, the argument fails to explain how a recognisable God could create an imperfect universe or why the characteristics of the universe should not be imputed to demonstrate the existence of an imperfect God, or even a committee of Gods.  Yet, in the end, Darwin’s theory of evolution through natural selection remains the best reason for rejecting teleological arguments, whether in their classical or modern forms.  The failure of Intelligent Design arguments such as those proposed by Michael Behe and William Dembski shows that any attempt to argue qua purpose to God lacks credibility when evolution offers an elegant and demonstrable explanation of purposiveness that does not demand recourse to the supernatural.  Certainly, examples of structures which biology does not yet understand exist.  However absence of evidence does not constitute evidence of absence!  Science is by its nature a process and it is unreasonable for religious critics to demand that it present a complete explanation now or admit failure.  There is ample evidence that evolution continues to offer explanatory power and that it is making progress in explaining even the most irreducibly complex or specifically complex structures.  Nevertheless, the failure of classical arguments qua purpose and modern derivations of them does not obviate the possibility of arguing to God qua regularity.  In particular, the aesthetic argument presented by Richard Swinburne could survive the criticisms outlined here[12].  That a universe should exist and evolve in the way that it does is incredible and this sense of awe and wonder could be the basis for a successful abductive argument for some sort of a God, if not the God of Classical Theism.

Footnotes

[1] Summa Theologica: First Part, Question 2, Article 3

[2] Dialogues Concerning Natural Religion (1779) Part II

[3] Ibid.

[4] Natural Theology page 3.

[5] Dialogues Concerning Natural Religion (1779) Part II

[6] Ibid.

[7] In Memoriam, Canto 56

[8]   Dialogues Concerning Natural Religion (1779) Part V

[9] See “Darwin’s Black Box” (1994)

[10] In books such as “No Free Lunch” (2002)

[11] See the case he presents in episode 2 of his documentary “Religion: The root of all evil” (2002)

[12] The Existence of God (2004)

Critically evaluate Aquinas’ Fifth Way. [40]

/ vardycharlotte / Leave a comment

Aquinas’ Fifth Way represents a classic statement of the teleological argument qua purpose.  Like Aquinas’ first four ways (Summa Theologica 1, Question 2, Article 3) the argument is inductive and draws the conclusion that God exists a posteriori, following observations of characteristics of the natural world and specifically that all things seem to act for an end (Greek “telos”).  Also like Aquinas’ other ways, the fifth way cannot claim to prove God’s existence; as an inductive argument it is limited to concluding that God is the most probable explanation of the aspects of the universe named in the propositions.  Apart from that obvious limitation, Aquinas’ argument is beset by significant problems and, as this essay will demonstrate, fails to achieve its aim of being a good argument for God’s existence.

Aquinas’ fifth way can be expressed through the following syllogism

P1: natural bodies, which lack intelligence, act for an end

P2: whatever lacks intelligence cannot move towards an end, unless it be directed by some being endowed with knowledge and intelligence

C: Therefore some intelligent being exists by whom all natural things are directed to their end (and this being we call God)

The first proposition – that natural bodies which lack intelligence act for an end – could easily be disputed.  Might it not be that direction in natural bodies is more about how we see and understand them than about how they actually are?  Arguably, the human brain is hard-wired to see patterns and infer causation in the natural world.  Of course, without proposition one the whole argument will founder.

Even if this objection is dismissed as taking scepticism too far, proposition two – that whatever lacks intelligence cannot move towards an end unless it be directed by some intelligent being – is problematic.  Take a banana.  Creationists often cite it as an example of “intelligent design” in the universe.  The banana is a great size, shape, sweetness and colour for human consumption (even its skin features a reliable indicator of ripeness) it seems well designed for the end of being a tasty snack.  Yet to say that ignores the fact that neither the colour, nor the shape, nor the sweetness nor the size of the banana has anything to do with a divine designer – modern bananas have been selectively bred by farmers to have these attributes from parent plants which evolved to appeal to other animals such as monkeys who would spread the seeds of the plant by consuming its fruit.  While we can infer the existence of an intelligence from the brilliance of the modern banana in suiting the average human palate, to suggest that that intelligence is divine is a big step too far.  Even setting aside the modern banana in favour of the original “wild banana”, the “intelligence” that designed it is more probably evolution by natural selection than any God.  It seems that the second proposition “whatever lacks intelligence cannot move towards an end, unless it be directed by some being endowed with knowledge and intelligence” is seriously flawed and on this grounds as well could be said to fail in its aim of being a good argument for God’s existence. 

Further, Aquinas proceeds to use the analogy of an arrow and an archer to illustrate his claim that all natural things act for an end and so must have been designed to do so by an intelligent being.  The analogy is far from perfect and suggests a certain circularity in Aquinas’ reasoning.  As Hume’s character Philo observes, the selection of an analogy for the universe is far from neutral.  Scholars (including Aquinas) assume their own world-view in selecting something to compare the universe with and so by saying “the universe is like an arrow” or “the universe is like a watch” commit the fallacy of begging the question. If I compare teleology in the universe with an arrow then the suggestion of a necessary divine archer seems reasonable, yet if I compared the universe with a rock rolling down a mountain, which seems just as sensible an analogy – elements of the universe go through cycles, grow increasingly complex and make progress after all – then the inference that there must be an intelligent designer behind the process seems less obvious.  Rocks can roll down mountains as a result of non-intelligent actions, whereas arrows don’t tend to hit their marks randomly.  The “ends” which Aquinas claims that non-intelligent things act for could well be accounted for by natural processes such as evolution through natural selection, so it seems unnecessary to conclude that an intelligent designer, let alone the Christian God, exists.

Finally, Aquinas’ claim about direction and efficiency in the universe is a general one.  There are many instances of natural things failing to fulfil their apparent end or indeed not having an apparent end.  If God is the “intelligent designer” of the universe then what do the obvious inefficiencies in nature suggest about His competence, and (as Charles Darwin and John Stuart Mill both observed) what does the existence of beings whose end is to torment and destroy other beings say about His goodness? As Darwin wrote…

“I cannot persuade myself that a beneficent and omnipotent God would have designedly created the Ichneumonidae with the express intention of their feeding within the living bodies of Caterpillars, or that a cat should play with mice.”

And as the Biologist JBS Haldane wrote…

“The Creator would appear as endowed with a passion for stars, on the one hand, and for beetles on the other, for the simple reason that there are nearly 300,000 species of beetle known, and perhaps more, as compared with somewhat less than 9,000 species of birds and a little over 10,000 species of mammals. Beetles are actually more numerous than the species of any other insect order. That kind of thing is characteristic of nature.” (“What is life?”)

As Hume’s character Philo concluded, the problems attendant on suggesting that God is the necessary designer of this universe, with all of its quirks and inefficiencies, are many.  Further, why one God?  Why not an apprentice God, a senile God… or one working as part of a committee? The final step in Aquinas’ argument, that of saying “this being we call God” is a giant leap and probably a leap too far.

In conclusion it seems that quite apart from the limitation of being an inductive argument, Aquinas’ fifth way fails to achieve its aim of being a good argument for God’s existence.  Aquinas’ first proposition can be questioned, his second seems to have no foundation in a post Darwin world, his analogy of the arrow and the archer is imperfect and so his conclusion that an intelligent designer-God must exist cannot be upheld. Nevertheless and despite its failure Aquinas’ argument retains value as an extremely clear statement of the teleological argument qua purpose, an argument which remains the most persuasive and which is probably the most widely cited reason for belief in God. Although the propositions fail to stand up to scientific scrutiny they seem reasonable, even undeniable to many people on an intuitive level.  On this basis modern scholars such as Alister McGrath and Richard Swinburne appeal to probability asking “which is more probable; that the apparent order and purpose nature is explained by chance and natural selection or that there is an intelligence shaping the process?”  They have more success in this limited endeavour than Aquinas had in seeking to advance a good inductive argument for God’s existence.

Further Reading

Aquinas’ Ways to God (New Advent)

Hume’s Dialogues Concerning Natural Religion