A Naturalistic Explanation of the Resurrection Appearances of Jesus

Synopsis

In this piece I argue that the Hallucinations, Biases, and Socialisation Model (henceforth HBS model, which I outline here) provides a superior explanation for the resurrection appearances of Jesus of Nazareth than does the competing Christian explanation (i.e. that Jesus was raised by God). In making this argument, I first present an account of what I mean by an ‘explanation’, and how one explanation can be judged superior to another. I argue that an explanation has greater explanatory power to the degree to which it can explain diverse phenomena (‘explanatory scope’), and to the degree to which it does not need to introduce antecedently unknown entities (‘plausibility’).

I then argue that the HBS model is both more plausible and has wider explanatory scope than the Christian explanation. I argue that it is more plausible since it depends only on the existence of psychological and sociological processes which are known to exist, whereas the Christian explanation must make contentious and uncertain assumptions about the existence and motivations of God. I argue that is has wider scope because it is capable (with minor adjustments) of explaining a wide range of miracle claims across different religions, whereas the Christian account is specific to the Resurrection appearances only. I thus conclude by arguing that, since the HBS model provides a superior explanation for the resurrection appearances without needing to posit the divinity of Jesus, the alleged superior explanatory power of the Christian explanation (as argued by apologists like William Lane Craig or Mike Licona) cannot in fact be appealed to as a significant argument to support the probable truth of Christianity.

Explanation

What is an Explanation?

I will begin by assuming that our objective is to provide an explanatory account of the resurrection appearances, including other associated details like the empty tomb and the conversion of Paul. The first step, I think, is define what we mean by an ‘explanation’, since different people use this word in different ways. In my view, an ‘explanation’ is more than just a satisfying story, or an account that seems to ‘make sense’. An explanation needs to get at the ‘underlying truth’ of the situation; what we might call the ‘causal structure’ of what is occurring. I know words like ‘truth’ and ‘causal’ are themselves problematic, but I’m trying to gesture at a very tricky concept here by using terms that I hope people have some existing familiarity with.

In light of these considerations, let me provide what I think is a suitable first-order approximate definition which will be sufficient for our purposes here: “an explanation of some phenomena X consists of a set of events, entities, and processes, which taken together provide/entail the causes which gave rise to X”. Put simply, an explanation of X is an answer to the question “what made X be the case?”, or “why X and not something else?”

Quality of Explanations

Explanations are not all or nothing; they come in varying degrees of higher and lower quality. In assessing the relative quality of different explanations, I believe that essentially what we are doing is maximising some abstract quantity, which for the sake of argument I will call the ‘power’ of the explanation. That is, better explanations have greater ‘explanatory power’. Explanatory power is a difficult and abstract concept which eludes simple definitions. Here I propose (again for the sake of conceptual clarity and without pretence of comprehensiveness) to think of explanatory power as being the combination (in a vaguely mathematical manner, analogous to multiplication) of two additional concepts: ‘scope’ and ‘plausibility’. Let me explain each of these in turn.

Scope

Explanatory scope refers to the size and extent of the phenomena that a given explanation can explain. Thus, given a particular explanation, the more different things that are in X (the set of things which are explained), the greater is the scope of that explanation. Special Relativity has greater explanatory scope than classical Newtonian Mechanics, as the latter is only applicable when velocities are considerably lower than the speed of light, while the former is applicable with any velocities. Greater explanatory scope is to be preferred, as it means that the explanation yields a greater insight into the underlying causal processes at work; it ‘tells us more’ about what is going on. However, greater explanatory scope does not by itself mean that an explanation is a good one – for instance, conspiracy theories tend to have very large explanatory scope, as they provide causal explanations for (often) a very diverse range of social, political, and economic phenomena. Such explanations, however, generally score poorly on the criteria of plausibility, to which I will now turn.

Plausibility

The plausibility of an explanation refers to its ‘simplicity’ or (more loosely) its ‘elegance’. This is closely related to the idea of Occam’s razor, which some people state as being the principle that ‘simple explanations are to be preferred’ or ‘the simplest explanation is most likely to be correct’, however I think this is a misleading characterisation. As I believe the idea is generally understood and applied in science and elsewhere, the notion of ‘simplicity’ has little or nothing to do with how easy an explanation is to understand, or how long it takes to explain, or even how many entities or processes it needs to appeal to. Rather, the version of the razor which I prefer, and which I think is most accurately descriptive of good inferential practise, is ‘entities must not be multiplied beyond necessity’. That is, given a particular phenomena to be explained, the explanation which requires the fewest assumptions or premises that are new (that is, not known antecedently) is (all else equal) to be preferred as an explanation. Understood in this way, the value of simplicity in an explanation is that with every new assumption we introduce about something existing or some process working in a particular way, we also introduce another place where we might make a mistake or go wrong. The more of these there are in our explanation, the more likely it is that at least one of them is incorrect, and hence the less likely the explanation is to actually be true.

Explanatory Power

Now that I have outlined the notions of ‘scope’ and ‘simplicity’, I will return to articulating the concept of ‘explanatory power’. As I stated earlier, I believe that explanatory power can be profitably understood as combination (loosely speaking, like the mathematical product) of scope and plausibility. That is, an explanation is said to have greater explanatory power to the degree to which it has greater scope, and the degree to which it has greater plausibility. Explanations with greater explanatory scope are to be preferred because they tell us more about the underlying causal processes at work, and more plausible explanations are to be preferred because they are ceteris paribus less likely to introduce a false assumption or premise which would invalidate the explanation.

Many explanations in science, and I also think some in history and even philosophy, have both a wider scope and high plausibility, and so consequently have high explanatory power. Some explanations, like conspiracy theories, have wide scope but immensely low plausibility (as they must posit a very large number of people working behind the scenes, competence to avoid detection, presence of immense resources, motivations to act, and many other such things that we do not antecedently know to exist, and indeed I think often have good reason to believe do not and even cannot exist). Other explanations may lack explanatory power for the opposite reason: although they have high plausibility in the sense of not needing to posit many new entities or processes, they may be so circumscribed and restricted in the class of phenomena which they can explain, that their explanatory scope is very narrow (arguably many historical explanations are of this sort). The sort of explanations which have the least explanatory power of all are those with both narrow scope and low plausibility (I think many paranormal explanations fit into this category, as they often only apply to specific events or a small class of events, and also make reference to ghosts and other such entities which are not antecedently known to exist).

Degrees of Plausibility

Before moving on, there are two final points to make. First, when I talk about ‘positing new entities and processes that are not antecedently known to exist’, this should be interpreted properly be interpreted as also being a matter of degrees. Entities or processes are seldom known for certain to exist, but are antecedently established with varying degrees of probability. Likewise, one entity or process cannot necessarily be assumed to be equal in plausibility to another merely because they are both referred to by a single word. Positing a new type of fundamental particle, or a new Neolithic culture in some part of the world, will in general be much less ‘extravagant’, and hence much more plausible, than positing the existence of ghosts or big foot, even if the latter are capable of providing a causal account of (i.e. an explanation for) the same set of phenomena. Of course, making this determination about the relative degrees of plausibility of different entities or processes is often quite difficult, but in principle I believe this is what we ought to attempt when constructing a plausible explanation.

Consistency

Second, many people in discussing explanations make reference to the consistency of an explanation; both the consistency of the explanation with the specific events or processes to be explained, and also more generally its consistency with our existing background knowledge about the world. Personally, however, I do not think it is necessary to introduce ‘general consistency with background beliefs’ as a separate criterion in judging explanatory power (or the quality of explanations generally), as I believe the idea of an explanation being consistent with our ‘background knowledge’ about the world is already incorporated into the notion of simplicity, in the form of the number of ‘new entities’ that a proposed explanation must posit. As to the question of consistency of the explanation with the specific phenomena to be explained, I think that if the explanation is inconsistent with the phenomena to be explained, then it is simply not an explanation of those phenomena (though it may be a partial explanation of sum subset of those phenomena). This sort of specific consistency, however, is relatively easy to obtain, simply by introducing additional ad hoc auxiliary hypothesis into an explanation (e.g. in an extreme example, one could simply say the explanation works one way on Mondays and another way on Tuesdays. Obviously this has very low plausibility, but it is nonetheless consistent with the specific phenomena to be explained).

The Resurrection Appearances

The HBS Model

We are now in a position to analyse competing explanatory accounts of the resurrection appearances of Jesus. Given the above considerations, we have established that our goal is to discover or develop an explanation with the maximum amount of explanatory power. Such an explanation allows us to understand the most about why things happened as they did, at the lowest ‘cost’ in terms of introducing new, antecedently unknown entities or processes (and thus multiplying the chances for error to creep in).

I believe that my HBS model (probably with some tweaks and additions, as its only a first draft, and I’ve had much less time to work at it and expertise spent on it than have the apologists on their arguments) possess greater explanatory power as an explanation for the resurrection appearances (and related events) on both accounts: I believe it has wider scope, and also greater plausibility. I will now defend each of these claims in turn.

Scope of the HBS Model

I believe the HBS model has reasonably wide scope because, with relatively small adjustments of details, it can serve as an account for the development and propagation of many different miracle claims and other paranormal beliefs throughout history. The psychological and sociological processes that it refers to are, given their widespread documentation and repeated validation, largely universal (in broad terms, obviously specifics vary), and so can be appealed to in many different cultural and historical circumstances to explain how people’s memories are reshaped over time, and how large groups of people can come to believe very unusual things even in spite of overwhelming evidence to the contrary. As such, since it is able to provide an account of a wide range of phenomena, the HBS model has reasonably wide explanatory scope.

Plausibility of the HBS Model

I also believe the HBS model has reasonably high plausibility, as it does not require the introduction of many new entities or processes. The model is based upon known psychological and sociological phenomena which have been generally quite well documented (though more work remains to be done on many details of course), and thus are antecedently known to exist. The main posit necessary in the model is in extrapolating these processes beyond the specific environments in which they have been originally studied, and applying them in collectively to explain a particular complex event in history (i.e. the resurrection appearances). In extrapolating and applying such phenomena, there is of course a degree of uncertainty. The HBS model assumes that the processes operate in broadly the way they have been observed to in various other contexts, and also assumes that they can interact and play off each other in the way I outlined in the model. I believe that these are reasonable assumptions to make, as the processes I document are sufficiently robust, and have been observed in sufficiently many contexts, that extrapolating them in the manner in which I have done in the HBS model is reasonably plausible, and consistent with other such ‘extrapolation’ practices in science and history.

Explanatory Power of the HBS Model

Thus, taken together, I believe that the HBS model of the resurrection appearances exhibits a fairly high degree of explanatory power. Its antecedently unknown assumptions are relatively few, mostly restricted to extrapolating and applying processes which I believe are already quite well documented. As such, it has fairly high plausibility. Likewise, its explanatory scope is reasonably high, as (with some appropriate modifications of specifics) the broad account can be applied to explain many other miracles and supernatural claims throughout history.

Plausibility of the Christian Explanation

I will now contrast the HBS model, with the Christian explanation of the resurrection appearances – namely that God resurrected Jesus, who then went on to appear to his various followers. First, I believe this account has relatively low plausibility. As far as I can tell, it requires three assumptions or premises which are not antecedently established: 1) that there is a God, 2) that this God desires to intervene in human affairs, and 3) that Jesus was the/a means by which this God desired to intervene in human affairs. I have chosen this tripartite division because I think it facilitates greater conceptual clarity: God could exist but not care to intervene in the world, or he could exist and be interventionist, but not be interested in resurrecting Jesus because in fact he is the Islamic God or the Hindu god (or whatever else). Of course, one could subsume all three assumptions into a single premise, for example simply “Jesus was God”, but I think this is essentially just stating the same three things in a different way. The key point is not how many sentences we write, but how many distinct conditions there are, each are separately controversial: some people believe 1) only, some believe 1) and 2), some all three, and others none.

So how plausible are propositions 1-3? I don’t know. I have argued elsewhere that our best guess for the probability of 1) is something like 10%, however I think even values north of 50% are also defensible (though not, say, 90%). The other two are considerably harder to put numbers on. Regardless, the real point is simply that I believe a Christian should agree that, antecedently to considering the resurrection, all of these three propositions are at best uncertain. They are a long way from firmly established. By contrast, I think most of the psychological and sociological processes utilized by the HBS model are quite firmly established, and the extrapolations made in applying them to the particular case of the resurrection are relatively small. This is, of course, a question of weighing up relative plausibilities, which is not easy to do. But I do think a strong case can be made that the processes and entities which the HBS model must posit in order to explain the resurrection appearances are antecedently known to exist with considerably higher confidence than the entities and processes required by the Christian account. As such, it is my view that the HBS model has greater plausibility than the Christian explanation.

Explanatory Scope of the Christian Explanation

I also think that the HBS model has greater explanatory scope than the Christian explanation. As noted before, the HBS model (with minor adjustments) can explain a diverse range of supernatural and miracle claims from all over the world, as it relies on psychological and sociological processes which (in general terms) are known or reasonably thought to operate in sufficiently similar ways across different times and cultures (there is, of course, a degree of extrapolation here as noted above, but I believe it is reasonably small). In contrast, the Christian explanation is so specific that it can only account for the Resurrection appearances, and perhaps also (with minor adjustments to extend the account to Jesus also appearing at other times and places in history) at least some subset of other Christian miracle claims throughout history. It cannot, however, provide any explanation for the many other miracles reported in Buddhist, Hindu, Mormon, Islamic, Pagan, and many other religious and spiritual traditions. As such the Christian explanation has narrower explanatory scope than the HBS model.

A Caveat

I am not saying here that a Christian worldview cannot provide an explanation for non-Christian miracle claims or paranormal occurrences. Rather, what I am saying is that the Christian account of the resurrection appearances, or any simple extrapolation thereof, does not itself provide such an explanation. Perhaps by introducing further assumptions about God appearing in other ways throughout history, or demons acting to deceive mankind, or even by appealing to some of the very same psychological and sociological mechanisms which the HBS account is based on, a Christian would be able to provide an explanation for these other miracle claims that is consistent with their worldview. But my point is precisely that this would require positing additional entities or processes (demons who can appear to people, or God choosing to reveal himself in additional ways to other peoples, etc) which are not entailed by the original explanation of the resurrection appearances itself.

Conclusions

Summing up, I have argued that the HBS model of the resurrection appearances possess greater explanatory power than does the Christian explanation. As such, I believe that we ought to prefer the HBS model over the Christian explanation, and judge that the former is more likely than the latter to be a correct, ‘true’ account of the causal processes which accounted for these sequences of events. If this is correct, it follows that the inference from the resurrection appearances to the probable divinity of Jesus (and hence the truth of Christianity) is an unsound one. Such an inference cannot validly be drawn, because in fact a more satisfactory causal account of these events can be given which does not entail the divinity of Jesus or the truth of Christianity.

It is very important to emphasise that here I am not in any way making an argument for the falsity of Christianity. Indeed, I believe a perfectly orthodox Christian could agree with my entire argument here. I am saying only that the Christian explanation for certain historical facts concerning the resurrection appearances (and related matters like the empty tomb and conversion of Paul) does not constitute by itself a strong reason to believe in the truth of Christianity, as there exists a superior explanation which does not entail this conclusion (namely, the HBS model). In spite of this, Christianity could nonetheless be true, since the HBS model does not rule out the divinity of Jesus or the reality of the resurrection accounts; it simply renders them unnecessary to explain said phenomena. Indeed, I believe (though I don’t have any firm data on this) that the majority of Christians both in the present and throughout history have not believed on the basis of this sort of historical argument. As such, I certainly don’t think that refuting this argument is a refutation of Christianity. It is merely a refutation of this particular argument in favour of Christianity.

A final point that I wish to make is that this isn’t merely some sort of intellectual game. It’s about finding the truth. If we wish to honestly seek the truth, we cannot decide on our conclusion beforehand and work out what evidence or arguments will get us there. We must examine the evidence and arguments as objectively as we can (with perfect objectively always remaining elusive), and attempt to arrive at the conclusion which is best supported by said facts and arguments. I believe that the conclusion which is best supported by the facts and arguments available, in the light of the analysis I have given, is that the resurrection appearances can be better explained naturalistically rather than supernaturally, and that as such the Christian explanation of the resurrection appearances does not constitute any substantial reason for belief in the truth of Christianity. I might be wrong about this conclusion, and so I invite everyone reading this to honestly and politely critique my arguments to expose errors or gaps in my reasoning. May we all be enriched in this joint search for the truth concerning this most important question.

A Case for Christianity – A Critique

Synopsis

In this piece I provide a critique of the Cosmological Argument portion of this video (see here https://www.youtube.com/watch?v=57Vr1Bkmvhk), a talk called ‘A Case for Christianity’ which has recently come to my attention. I argue that the speaker’s defenses of inference to the best explanation, the contingency of the universe, and the principle of sufficient reason, are all inadequate, and fail to properly consider plausible alternatives and counterexamples. I also discuss the comparative abilities of theism and naturalism to offer an ‘explanation’ for the origin of the universe, arguing that the speaker’s case for theism’s superiority is not well supported by the arguments he uses. Finally, I make some brief comments in response to the fine-tuning argument. Note that I do not discuss the historical arguments made in the second part of the talk, as I have addressed these in much more detail here (http://goo.gl/KCrJgL).

Inference to the Best Explanation

The speaker begins by appealing to ‘inference to the best explanation’, claiming that we use this sort of inference in science, history, and everyday life all the time, and that therefore it is valid. I believe that his argument is problematic for a number of reasons. First let me consider the two ‘examples’ that he gives to illustrate inference to the best explanation.

His first example is of electromagnetic theory providing evidence for the existence of electrons. Here, however, he simply presupposes the truth of scientific realism (that is, the notion that theoretical entities like electrons ‘really exist’, and are not merely useful fictions). Not only is scientific realism highly controversial, but it is also precisely the point he is attempting to establish here. That is, in order to accept that electromagnetic theory provides strong evidence for the ‘real’ existence of electrons, one would already have to accept the philosophically controversial premise that abductive arguments (another name for inference to the best explanation) are a valid method of reasoning about what is true. But this is precisely the point that the speaker is attempting to establish by citing this example. Thus the argument is question-begging.

In the case of the open window example, the speaker is confusing abduction and induction. Induction refers to the process of inferring that because something is often the case, or has often happened in a particular way, that therefore it is probably likely to happen similarly in this particular (new) case. That is a different type of argument to inference to the best explanation, but is precisely the type of reasoning being used in the window example. Thus, this second example also fails to support the speaker’s argument about the validity of inference to the best explanation.

Aside from the flaws of his examples, there is a deeper problem with the speaker’s argument – he fails to provide a proper definition of what they mean by ‘explanation’. It does no good to say ‘explanation tracks truth’ when it is not at all clear what ‘explanation’ actually means, or what one looks like. At various points throughout the talk he speaks of explanations as providing ’causes’ of something, as giving ‘a reason why’ something happens, and also of being able to fit with empirical data. These are all different notions of explanation (and there are many more that are debated in philosophy). Before any sensible argument can be made about what inferences can be drawn on the basis of explanations, it is first necessary to provide at least a reasonably clear explication of what exactly is meant by this term. Otherwise, things that one claims as being ‘explanations’ may not actually be explanatory at all (a potential issue with some of his later arguments). In sum, the speaker simply does not address these issues in sufficient depth (or really even allude to them at all), and thus they fail to make their case for the validity of abductive arguments.

A final problem with inference to the best explanation, which the speaker also does not address, is that at best all that such arguments can tell us is that when some explanation is superior to another, then we can infer that the state of the world ‘corresponding to’ that explanation is more likely. We cannot actually say how much more likely it is without knowing more about the comparative explanatory power of the competing explanations. It could be the case that even the best explanation available is so poor, is such as bad explanation, that the corresponding state of the world is still not very likely.

The Contingency of the Universe

The speaker argues that the universe is probably contingent, because the universe is simply the sum total of everything in the universe, and as far as we know everything in the universe is contingent. There are several flaws with this argument.

First, we simply do not know very much about the large-scale structure, origin, and nature of the universe. We do not know what was possible and what wasn’t – the science (and philosophy) of these matters is a long way from being settled. For the speaker therefore to simply assert that ‘as far as we know everything is contingent’ grossly overstates the extent of our knowledge, and dismisses too readily the high levels of uncertainty that remain.

Second, the speaker actually gives no reason as to why the universe should be contingent even if all of its constituent components are contingent. This is simply the fallacy of composition. He does acknowledge that it isn’t logically necessary that this be the case, but then he simply brushes off this objection and asserts that ‘it is a real stretch’ to argue that the universe could be necessary even though all its constituents are contingent. Why? No argument is given. Indeed, there seem to be many obvious counterexamples where properties of the whole are not manifested in any of the parts. For instance, cells are alive, but cells are made up of nothing but atoms, which are not alive. Words have meaning, but words are made up solely of vibrations of air or dots of ink, which do not have any meaning associated with them individually. To give another example, we would have to ‘go and look’ to see if any particular book was in a library – that fact would be contingent. But it would not be a contingent fact that a library contains books of some sort, or else it would not be a library at all.

For these reasons, the speaker fails to establish their conclusion that the universe is contingent.

The Principle of Sufficient Reason

The speaker argues that all contingent facts must have some reason or explanation as to why they are the case, a notion which is called the ‘principle of sufficient reason’. He argues that this principle underpins essentially all of science, and that rejecting it leads to nonsensical conclusions. However, I think the speaker fails to establish their argument about PSR, for the following reasons.

First, he is not clear about exactly what constitutes a ‘reason’. Is it a physical cause? A non-physical cause? An explanation? A purpose? What exactly? It seems difficult to take the argument very seriously when it is not even clear what claim is actually being made. On a related point, even the notion of causation itself is philosophically problematic, as David Hume and others have noted. To this the speaker makes no reference at all, and seems content merely to take the concept of ‘causation’ as an unproblematic given.

Second, the fact that something like the PSR (arguably) ‘underpins all of science’ does not imply that it is everywhere and always true. The author falls into the same trap that he accuses the naturalist speaker of falling into, namely of assuming that because a given concept sometimes works or is successful in a particular sphere (in this case science), it therefore follows that it is universally applicable. That simply does not follow. It could be the case that science works well for questions where PSR (or something like it) is applicable, and does not work well for questions where it does not. One can also raise the deeper question of whether science actually provides ‘reasons’ or ’causes’ at all, rather than merely describing empirical regularities (again, as argued by Hume). These are complex and much-debated questions in philosophy, but the speaker ignores them, and simply adopts as ‘obvious’ particular simplistic answers which, conveniently enough, also support his argument.

Third, to reject the PSR does not imply ‘nonsense’. It merely is to say that we do not properly understand abstract and difficult concepts like ‘causation’ well enough to make confident claims about them.

The Failure of Naturalism

The speaker then proceeds to argue that naturalism is unable even in principle to provide an explanation for the origin of the universe, as naturalistic explanations can only refer to physical laws, which themselves did not exist before the universe and hence cannot be appealed to in an explanation of it. A few responses are in order here.

First, the line of argument being made here is very dubious. It seems that the speaker is saying that we could tell that naturalistic explanations could never explain the origin of the universe, even before we had even tried to construct any, or test them to see if they work. He is saying that even in principle they simply cannot yield such an explanation. Looking back over history, it seems this line of argument that science ‘cannot possibly even in theory’ explain any given phenomenon has fared very poorly, the most obvious example being vitalism and explaining the unique nature of living beings. In general, I think it is wise not to place great confidence in armchair philosophizing arguments about what science can and cannot explain ‘in theory’. Their track record seems to be very poor indeed.

Second, it is not at all clear the a naturalistic explanation would require physical laws. When we begin talking about things that existed “before” the universe began, and how the universe could have come into being, we are so far outside of the realm of what we can understand, of what we can know about with any confidence, and so far beyond the bounds where our intuitions are useful, that it is just not at all clear what a naturalistic explanation of the origin of the universe would look like, or what it would need to appeal to. The fact that the speaker cannot now imagine how such a thing could be developed is simply an example of the fallacious argument from lack of imagination.

Third, the argument here relies on the notion that the universe is contingent, and that contingent things require explanations, both premises which, as I argued above, are questionable at best.

God as an Explanation

In this section, the speaker argues that theism provides a satisfactory explanation for the origin of the universe, on that basis that it was created by an uncaused non-physical mind. There are many problems with this proposed explanation.

First, no non-physical substance, entity, or process, is known uncontroversially to exist. The only non-physical things that we think ‘exist’ are abstractions, like nations or languages or mathematical theorems. But God is not supposed to be an abstraction; he is supposed to be a ‘real’ non-physical entity. It is certainly possible that such entities exist, but outside of the question of God, we do not have any other good reasons to believe that such things are exist at all (indeed, the very notion may be incoherent – this is debated). In contrast, we know that physical processes and entities are real (or, at least, we know this with a fairly high level of confidence, philosophical skepticism notwithstanding). For this reason alone, I think it is reasonable that naturalistic causes be granted higher plausibility when considering questions such as how the universe came to be.

Second, even if we are to accept non-physical causes, there seems to be no reason to accept this particular one that the speaker presents. Instead of a non-physical uncaused mind, could we not instead posit a non-physical uncaused substance called ‘vitalic phlogiston’, which gives rise to the universe as a product of the fluctuations of its internal harmonic vibrations. It seems there is an almost limitless number of potential non-physical ‘explanations’ (again, a problematic term the speaker does not properly define) for the origin of the universe. Why should we prefer Christian theism over any of these others? One may argue that additional criteria or evidences are available with provide such reasons, but in that case it seems that the cosmological argument by itself is not actually doing very much ‘work’, so to speak, of providing support for theism.

Third, the speaker’s claim that the rebuttal that ‘minds are complex’ necessarily assumes materialism, seems to be rather a stretch. In fact, it seems perfectly reasonable to say that, even if materialism is false, minds are still very complicated things. Minds are capable of a wide range of thoughts and behaviours, which are often very unpredictable and interact in complex and unexpected ways. One can go on and on listing various ways in which minds are complicated, none of which depend in any way on the notion that minds must be material. The argument is not that minds are complex because brains are complex. The argument is that minds are complex precisely because, by their nature, by the definition of what we mean by ‘mind’, a mind is an intricate, multifaceted, and hence complicated thing. Merely stating that ‘God is non-material and therefore simple’ does not address this point, and is little more than argument by assertion.

The Fine-Tuning Argument

The speaker ends with an argument that further evidence for divine creation can be gained from the fact that the universe is, despite apparently enormous odds against it, capable of sustaining intelligent life, a fact which is a natural corollary of the theistic explanation, but not of any naturalistic explanation. One can question this argument on a number of grounds.

First, it is by no means established that the universe is in fact actually ‘fine-tuned’ for life. Certainly some scientists and philosophers think that this is the case, but there are also many who do not (e.g. Victor Stenger). As I argued before, we simply do not know enough about the laws of nature, how they interact, why they are as they are, and what else could have been possible, to make any confident claims about ‘fine-tuning’.

Second, even if the universe is fine-tuned, the speaker does not adequately consider potential naturalistic explanations for this. He too readily dismisses multiverses, which, although doubtless sound absurd to a layman, are nonetheless taken very seriously by a large number of physicists and philosophers, and are widely considered to be a powerful, plausible explanation for a wide variety of phenomena (including many apparent paradoxes of quantum mechanics). This of course is not proof that multiverses really exist, but I think the notion cannot be dismissed nearly so readily as the speaker does. A second, totally independent possible naturalistic explanation is the various forms of the anthropic principle. Although this sort of anthropic reasoning is highly controversial, so too is the existence of God, so it seems unreasonable and unfair to dismiss such potentially powerful alternative explanations arguments so readily.

Overall, contrary to the speaker’s argument, it is not clear that theism has the unique advantage of being able to explain the apparent ‘fine-tuning’ of the universe far better than can naturalism.

Conclusion

In my view, the speaker fails to establish his argument. He makes too many quick leaps of logic on the basis of questionable premises, without adequately considering possible objections, alternate explanations, or rebuttals. The speaker is also far too ready to make confident conclusions about difficult questions, such as the nature of causation and the origin of the universe, despite the fact that we simply do not know very much at all about these matters, or even how to think about them properly. Overall, the claims made about the likely existence of a creator God are not justified by the equivocal and incomplete nature of the reasons provided.