Friday, August 13, 2010

How to debunk Dhorpatan's argument against all gods

I summarized some of the content of this blog entry in this video in case anybody wants something shorter.

After I wrote my last blog entry responding to the YouTube video, "How to prove God doesn't exist, in 3 minutes or less!," I recorded a video of myself reading the blog so I could post it as a reply and everybody who saw the video would be able to see my response. You can’t post url’s in youtube comments. Dhorpatan (the guy who made the video) responded in the comment section of my video, saying that I had misunderstood his argument. I had his definition of “infinity” wrong, and my syllogism did not accurately represent what he was saying. So I decided to write a more thorough critique of his video with his clarifications in mind. This is going to be a complete redo of my critique of his argument against the existence of god.

Dhorpatan wrote in the detail section under his video that “this may be one of the greatest, if not THE greatest argument for the non-existence of not just the Judeo-Christian God, or Creator Gods, but ALL Gods!!” Since the purpose of the video is to refute the existence of all gods, his attempt can be considered a failure if he leaves any of them unrefuted. I’ll argue that not only did he fail to refute the existence of all gods, but he doesn’t manage to refute the existence of any gods at all.

BTW, I’m using ‘god’ with a small ‘g’ since we are talking about all gods, not just some specific god. I’m also using the pronoun ‘he’ as a convention. For the sake of Dhorpatan’s argument, it doesn’t matter whether god is male, female, neither, both, personal, or impersonal.

What is Dhorpatan attempting to refute?

Dhorpatan attempts to refute the existence of both finite gods and infinite gods, since, by the law of excluded middle, that exhausts all the possibilities. First, he argues against the existence of a finite god. Then he argues against the existence of an infinite god. He suggests asking the CTCer (i.e. Christian, theist, or creationist), “Is God infinite?” Then he launches into his arguments.

Argument against finite gods

This is his argument against a finite god in his own words:

If they say ‘no’ then god is not infinite, then he is not beginingless, and will require a cause, refuting his being god, since by definition, god cannot be dependent on something external to himself. Further, he cannot be the first cause creator since a non-infinite god is limited and would thus not be sufficient to halt infinite regress. This falsifies the existence of god since it is a violation of Occam’s razor to needlessly multiply explanations beyond logical parsimony. And since god would not be sufficient to halt infinite regress, his supernatural existence would be a needless multiplication of explanations beyond natural inquiry.

First argument against finite gods

The first part of his argument can be summarized like so:

1. If a finite god exists, then he has a beginning.
2. If the finite god has a beginning, then he must have a cause.
3. If the finite god has a cause, then he is dependent on something external to himself.
4. By definition, no god can be dependent on something external to himself.
5. Therefore, a finite god does not exist.

This is a deductive argument, and there are only two ways a deductive argument can go wrong. If at least one of the premises is false, then the argument fails. If the conclusion does not follow logically from the premises, then the logic is invalid, and the argument fails.

Let me say first of all that the logic in this argument is impeccable. It is definitely logically valid. I had to add the third premise to make his argument valid because that’s not exactly how he put it, but I don’t think he will object. He shouldn’t, anyway. I also tweaked the fourth premise for the sake of precision. Again, he shouldn’t object.

Let me also say that I agree with his second and third premises. I think his first and fourth premises are false, and that’s why his argument fails.

Let’s look at his first premise:

1. If a finite god exists, then he has a beginning.


Unfortunately, Dhorpatan didn’t give us a definition for “infinite.” Nor did he give us a reason for why we should think this premise is true. In my first response, I said that by “infinite,” he appeared to mean “beginningless.” After all, the contrapositive to this premise is: “If God is beginningless, then god is infinite.”

Let me make a detour here and explain what a “contrapositive” is. I’m not trying to insult anybody’s intelligence. It’s just that a lot of people don’t know what that means. The contrapositive to an if/then statement is a logically equivalent statement. “If P then Q” means the same thing as “If not Q, then not P.” You can demonstrate this by using modus tollens.

If P then Q.
Not Q
Therefore, not P.

Assuming the first premise is true (If P then Q), it follows that if the second premise is true, then the conclusion is true, since the conclusion follows from the first and second premise. In other words, it follows that “If not Q, then not P.”

Well, Dhorpatan corrected me about the relationship between beginninglessness and infinity. In the comment section of my video, he said, “Something that is beginningless is not necessarily infinite.” Then he used the laws of logic as an example of something that is beginningless but not infinite. What I want to point out is that Dhorpatan has unwittingly refuted his first premise. If his first premise is true, then it’s necessarily also true (by contrapositive) that if something is beginningless, then it is infinite. Since he has pointed out a counter-example to the contrapositive of his first premise, it follows that his first premise is false. And if his first premise is false, then his whole argument fails.

He could reword his first premise to be consistent with his statement and his counter-example. It would then read, “If a finite god exists, then it’s possible for him to have a beginning.” But of course that would invalidate his whole argument. To make it logically valid, he’d have to tweak the other premises to include mere possibility, and his conclusion would be, “A finite god could possibly not exist.” If the best his argument can achieve is to make the non-existence of a finite god possible, then his argument fails to show that a finite god does not exist. So by saying, “Something that is beginningless is not necessarily infinite,” Dhorpatan has refuted his argument against a finite god.

Maybe we could salvage his argument, though. Since he says that beginningless things are not necessarily infinite, maybe there are some cases where if something is beginningless, then it is infinite. We could salvage his first premise if somehow god turned out to be one of those special cases where if he is finite, then he is beginningless. Dhorpatan would have to provide us with an argument to that effect, though. He could not argue like so:

Anything that is finite must have a beginning.
God is finite.
Therefore, god must have a beginning.

He could not make that argument because he has already given us a counter-example to the first premise, namely the laws of logic. To salvage his argument, Dhorpatan needs to explain to us why god being finite means god must have a beginning, but the same rule does not apply to the laws of logic. Since Dhorpatan didn’t even attempt to defend this distinction, I can only guess at what his reasoning might be.

First, we should explore why he thinks god being finite must mean that he has a beginning. Although he didn’t give a definition for “infinity” in his video, he did tell me what he meant in the comment section of my video response. He defined “infinite” as "having no limits in time, space, extent or magnitude.” Perhaps he thinks a finite god must have a beginning because if god is finite, then he is limited in duration. He has only existed for a finite amount of time, and therefore has a beginning. How, then, might the laws of logic be finite, and not have a beginning? I suppose Dhorpatan could say that the laws of logic are timeless—they have no temporal component at all, neither a finite nor an infinite one. The only problem is that his argument against a finite god would then only apply to temporally finite gods. It would not apply to timeless gods, and would leave them unrefuted.

Dhorpatan could fix that problem by arguing, as William Lane Craig does, that god must be temporal if he is to have any kind of relationship with the physical cosmos. But there are problems with that, too. First, Dhorpatan’s argument against a finite god would do nothing to refute deistic finite gods, since deistic gods do not interact with the physical cosmos. Second, if god is the cause for the beginning of the space-time continuum, then god could be timeless without creation and temporal with creation. In that case, god could be temporal and yet beginningless.

Perhaps Dhorpatan has some reason to think there couldn’t be a beginningless finite god, and I just haven’t been able to guess what that reason might be. But we can demonstrate from premises that Dhorpatan has given us himself that there can be a beginningless finite god (finite in the sense of having a limited duration in time). Let’s look at his second and third premises:

2. If the finite god has a beginning, then he must have a cause.
3. If the finite god has a cause, then he is dependent on something external to himself.

If these premises apply to anything that has a beginning and anything that has a cause, then there must be a beginningless creator that is finite with respect to duration. Let me explain. Remember that Dhorpatan defined “infinite” as "having no limits in time, space, extent or magnitude.” So if something has no limit in extent, then it is infinite. Dhorpatan laters tells us that actual infinites cannot exist in the universe. So we can make the following argument:

1. If time does not have a beginning, then time is unlimited in extent.
2. If something has no limit in extent, then it is infinite.
3. An actual infinite cannot exist in the universe.
4. Therefore, time must have a beginning.

If something which has a beginning must have a cause, then time must have a cause. And if something which has a cause must be dependent on something external to itself, then the cause must be external to time. In other words, it must be timeless. So, using Dhorpatan’s own premises and definition, we have shown that something timeless brought time into existence. Since it’s possible that a temporally finite god is what brought time into existence, Dhorpatan’s argument against a finite god fails.

But his argument fails for another reason. His fourth premise is also false:

4. By definition, no god can be dependent on something external to himself.


His definition of god is too restrictive. There are all kinds of gods that are dependent on something external to themselves. All of the Greek and Roman gods were dependent on something external to themselves. Many of them were procreated. The Mormon god is also dependent on something external to himself. So clearly “god” has a much broader meaning than Dhorpatan has allowed. Since his fourth premise is false, his argument against a finite god fails.

There just doesn’t seem to be any way to salvage Dhorpatan’s argument against all finite gods. If there is, and if I just haven’t thought of it, then Dhorpatan needs to make another video, because the video with its present content is woefully inadequate.

Second argument against finite gods

Let’s move on to the second part of his argument against a finite god. It can be summarized like so:

1. If god is finite, then god is limited.
2. If god is limited, then god would not be able to halt an infinite regress.
3. If god is not able to halt an infinite regress, then god’s supernatural existence would be a needless multiplication of explanations beyond natural inquiry.
4. If god’s supernatural existence is a needless multiplication of explanations beyond natural inquiry, then god’s existence violates Occam’s razor.
5. Therefore, if god is finite, then god’s existence violates Occam’s razor.

The first premise lacks precision. While it’s true that if god were finite in some sense then he would be limited in that same sense. But Dhorpatan doesn’t tell us in what way God would have to be limited if he were finite. The problem with this lack of precision will become clear when we look at the second premise.

The second premise is false. If god were limited with respect to his personhood (i.e. he is a finite number of persons), it would not follow that god is unable to halt an infinite regress. God would have to be limited in some particular sense before it would follow that god is not able to halt an infinite regress. Since it’s possible for god to be limited in some way and still be able to halt an infinite regress, his second premise is false.

This is probably a good place for me to add that his definition of “infinite” also lacks precision. Let me explain what I mean. Let’s suppose I am able to eat a whole sandwich. It would follow that I am not limited by any inability to eat the sandwich. By Dhorpatan’s definition of infinite, you could argue that I am infinite since I have no limitations that prevent me from eating the sandwich, neither in extent, nor magnitude. Surely that is silly. That’s why philosophers and mathematicians don’t use google to come up with their definitions, as Dhorpatan apparently did.

The second premise is also false because, as we’ve shown, god could be limited in duration and still halt an infinite regress. If god is what caused time to come into existence, then god does halt an infinite regress.

His third premise is incoherent. The only way god’s supernatural existence could be a needless explanation is if (1) we have something that needs to be explained, and (2) we have something to explain it with other than god. So what on earth is he talking about? Maybe the thing that needs to be explained is the existence of the physical cosmos. Or maybe we need to explain the beginning of time or the beginning of events since there can’t be an infinite regress. But what else has Dhorpatan suggested to halt an infinite regress? Nothing, as far as I can see. If Dhorpatan doesn’t give us something to halt an infinite regress, god cannot be a needless explanation, and his third premise is false.

The fourth premise is more or less true by definition, but it lacks precision. I’ll just let it slide, though, since this post is already getting too long.

Now we get to the conclusion—that the existence of god violates Occam’s razor. Notice that the conclusion is not that a finite god does not exist. If Dhorpatan wanted to add that if something violates Occam’s razor, it therefore doesn’t exist, then his argument would be fallacious since that doesn’t follow. All Occam’s razor tells us is that any hypothetical entity we propose to explain some phenomenon that is already fully accounted for must be unjustified.

For example, let’s say I have an unassembled tent that I leave on the ground while I go use the bathroom. When I come back, I find that the tent has been assembled, and I need an explanation for how it got to be assembled. In that case, I am justified in inferring that at least one person set my tent up. Since one person is sufficient to explain how my tent got put up, Occam’s razor only allows me to infer one person. I’m not justified in inferring two or three people. But obviously it doesn’t follow that, therefore, only one person set the tent up. There may have been three or four people who set the tent up for all I know.

There are things that exist that we don’t know about because we haven’t discovered them yet. Since we don’t know about them, they obviously have no explanatory power for us. But clearly that does not mean they don’t exist. We have no phenomenon that we need unicorns to explain, but it doesn’t follow that no unicorns exist. It only follows that we are unjustified in inferring that they must.

So this argument from Occam’s razor does not support the claim that god does not exist. At best, it only works as a rebuttal to some phantom argument for the existence of god that Dhorpatan doesn’t tells us about. We can’t assess whether god is an unnecessary explanation in that phantom argument since Dhorpatan doesn’t tell us what the argument is. So we can just mark this whole Occam’s razor argument out. It’s irrelevant to Dhorpatan’s case against god.

Argument against infinite gods

Let’s move on to his argument against an infinite god. This is his argument in response to the question, “Is God infinite?”:

If they say ‘yes’ that God is infinite, then their God does not exist since actual infinites cannot subsist within the universe.


Dhorpatan didn’t like the way I characterized this argument in my previous blog/video. This is how I previously characterized the argument:

1. An actual infinite cannot exist in the universe.
2. God is an actual infinite.
3. Therefore, God cannot exist in the universe.

He objected to this characterization by saying, “your syllogism was a strawman, as I don't say God is actually infinite.” Of course, since he doesn’t believe in any god, it follows that he doesn’t believe god is infinite or finite. But the second premise only represents the definition of the god he is attempting to refute. So I insist that the argument does accurately represent what he is arguing. But I will characterize the argument differently to avoid his silly objection. Here’s the new characterization.

1. If an infinite god exists, then an actual infinite exists in the universe.
2. An actual infinite cannot exist in the universe.
3. Therefore, an infinite god cannot exist.

That is not exactly how he worded it, but surely he won’t object to this characterization. You can read his words for yourself and see that it accurately represents what he is arguing.

Let’s look at that first premise. One possible rebuttal is that God does not exist in the universe. If God doesn’t exist in the universe, then the first premise is false. Dhorpatan addresses this rebuttal later in the video. He says:

There is no outside the universe. The universe is existence. This rebuttal fails since it’s trying to baselessly assert that God exists outside of existence. Something that exists outside of existence doesn’t exist.


When I first read this, it struck me as a blaring case of begging the question. Since most theists make a distinction between the creator and the creation, and since the universe is the creation, it follows that the creator is not in or part of the universe. So the issue under dispute between theists and atheists is whether the universe is all that exists. But Dhorpatan’s refutation is based on the assumption that the universe is all that exists. There can be no clearer case of circular reasoning.

But as it turns out, I misunderstood what Dhorpatan was arguing. By saying the universe is existence, Dhorpatan was not making a synthetic statement; rather, he was making an analytic statement. In other words, he was just giving us a definition of the universe. He was telling us how he is using the word. In the comment section of his video, he said, “The Universe is defined by several credible sources as everything that exists.”

I suspect that Dhorpatan has just misunderstood what he has read. There are some authorities, like Carl Sagan, who have said the universe is all that ever was or will be. But they are not making analytic statements in those cases. They are not defining the universe. Rather, they were making metaphysical claims about reality. Their statements are synthetic. Usually, when anybody talks about the universe, they are referring to the entire space/time continuum, the physical cosmos, the sum total of space, time, and matter/energy. Whether there is anything other than the universe is a philosophical question.

But what’s important is not how the universe ought to be defined, but how Dhorptan is using the word “universe.” He is using the word as a synonym for “reality.” So we can substitute “reality” for all his uses of “universe” to avoid misunderstanding him. His argument would then be:

1. If an infinite god exists, then an actual infinite exists in reality.
2. An actual infinite cannot exist in reality.
3. Therefore, an infinite god cannot exist.

This avoids the objection that God does not exist in the universe. No theist is going to say, “God does not exist in reality,” and offer that as a rebuttal to Dhorpatan’s argument, because that would be to concede Dhorpatan’s argument.

The first premise appears at first glance to be an obvious truth. It’s almost a tautology. But it really depends on what is meant by “infinite” and “actual infinite.” For example, if a potentially infinite god exists, it wouldn’t follow that an actual infinite exists. A god who was constantly learning could be potentially infinite as his knowledge approached infinity, but it wouldn’t follow that an actual infinite exists in reality. So the only way the first premise can be true is if “infinite” means the same thing in both cases.

Likewise, his argument can only be valid if he is using “infinite” in the second premises just like he is using it in the first premise. If god is infinite in some sense other than Dhorpatan means when he says an actual infinite cannot exist, then his argument commits the fallacy of equivocation, and is invalid.

That’s what I accused him of in my first blog/video. Typically, when people say that actual infinites cannot exist in reality, they mean specifically that there cannot be an actually infinite number of things. But when theists say god is infinite, they do not mean it in that sense. Since Dhorpatan didn’t define “infinite” in his video, I just assumed he was using “infinite” in the senses they are typically used in the context of god and in the context of the impossibility of actual infinites.

He corrected me, though, and said that in both cases, he was using infinite to mean “having no limits in time, space, extent or magnitude.” Unfortunately, Dhorpatan’s definition is not precise enough to do any work for him. Dhorpatan made no distinction between potential infinites and actual infinites. Neither did he make any distinction between qualitative infinites and quantitative infinites, which he admits in the comment section of my first video.

While most people might accept that an actual quantitative infinite cannot exist in reality, I don’t think most people would accept that a qualitative infinite cannot exist in reality either. But many people don’t even accept that an actual quantitative infinite cannot exist in reality. Dhorpatan’s premise, then, is highly controversial. Yet he offers it without any substantiation. Without some kind of argument to support the premise that an actual infinite cannot exist in reality, Dhorpatan’s argument doesn’t disprove the existence of an infinite god.

Given the broad range of infinities that can be captured under his definition of “infinite,” his second premise just isn’t true. There are some infinities that fit his definition, but that can exist in reality. For example, if god is all powerful, then there is no limit to the extent of what he can do. But there is no reason to think that kind of infinite couldn’t exist.

Somebody may object, and say that God cannot engage in logical absurdity. He can’t create square circles or married bachelors, and he can’t make necessarily false statements true. But these are artificial limitations because the scenarios are incoherent. I know what a square is, and I know what a circle is, but I don’t know what a square circle is. “Square circle” is an incoherent combination of words. It isn’t clear what god is being asked to do, or what the world would look like if he could do it. It isn’t because of a lack of power that God can’t engage in logical absurdity. It’s because the scenarios themselves are nonsense. When we say god is all powerful, it means that he can do anything that actually makes sense, and that is meaningful.

There is a sense in which an all knowing god’s knowledge is infinite, and a sense in which it is not infinite. It is infinite in the sense that it is exhaustive. If god knows all true propositions, then there is no limit to the scope and extent of what god knows. But if there are only a finite number of true propositions, then you could say god’s knowledge is finite in number, even though it was exhaustive. There is no reason to suppose that such a god could not exist.

God is sometimes said to be qualitatively infinite because he had no beginning, or because he is a necessary being. As we’ve seen, though, Dhorpatan accepts the existence of at least some things that do not have beginnings, namely the laws of logic. The laws of logic are also necessary, so Dhorpatan would also have to accept the existence of necessary beings. It’s impossible for there not to be something in existence that is necessary. If anything exists at all, then something must be necessary because that’s the only way to halt a numerically infinite regress of explanations for contingent things. If Dhorpatan accepts the existence of necessary things that have no beginning, then he cannot dismiss the existence of god just because god is necessary and beginningless.

The sense in which Christians say that God is infinite is that God has certain attributes to a maximum degree. He is all powerful in the sense that he can do all things logically possible. He is all knowing in the sense that he knows all true propositions. He is uncreated. He is necessary. If Dhorpatan wants to disprove the Christian God, then he needs to explain why we should think that an infinite God in this sense cannot exist. It just won’t do to say that God’s temporal duration is finite, since the Christian God is causally prior to time, and is therefore beginningless. It won’t do to say that an actually infinite quantity cannot exist in reality since the Christian God is not actually infinite in that sense, and none of his attributes entail the existence of an actually infinite number of things.

Dhorpatan could say that if all these senses in which we say god is infinite (knowledge, power, necessity, etc.) are not really what he means by infinite, then he would have to place our god in the “finite” category, which he addressed in the first part of his video. But as we’ve seen, that argument fails. So Dhorpatan has failed to refute the existence of any god.

In fact, it would be hard to accept all of Dhorpatan’s premises and not arrive at the existence of some sort of creator god. If time had no beginning, the past would be an actually infinite collection of equal intervals of time. There would be an actually infinite number of minutes and of seconds. If an actual infinite cannot exist in reality, then time must have a beginning. Dhorpatan claims that if god has a beginning, then god will require a cause. Unless he has some reason to make a distinction, it seems that time would also require a cause. That means a timeless entity brought time into existence.

It turns out that the whole physical cosmos must have a beginning, because the cosmos is space/time. It’s the sum total of space, time, and matter/energy. It’s in a constant state of change, and change requires cause. Since there cannot be an actual infinite in reality, it follows that the causal chain in the physical cosmos must have a beginning. And if it has a beginning, then it must have a cause. So something spaceless, timeless, and immaterial must have brought the physical cosmos into existence.

Since Dhorpatan does not believe in actual infinites, he cannot rationally believe in infinite regresses. And if he doesn’t believe in infinite regresses, then he must believe in an uncaused first cause. The uncaused first cause is a necessary, uncaused, spaceless, timeless, and immaterial creator of the cosmos. It follows necessarily from Dhorpatan’s own premises, so it’s irrational for him to deny the existence of such an entity. And it would be a strange kind of atheism to accept such a thing.

Rebuttals

At the end of his video, Dhorpatan addressed three rebuttals to his argument against an infinite god, so let’s look at those.

The first rebuttal is that “God is spiritual, and is therefore not bound by the realities of non-spiritual entities.” Dhorpatan’s refutation is exactly right. The second premise—that actual infinities cannot exist in the universe—encompasses all of reality, whether spiritual or not. So this rebuttal makes an irrelevant distinction.

The second rebuttal is that “God created the universe, so he is not bound by the laws and limitations of it.” Dhorpatan responded by saying that “anything that exists within the universe is logically bound by the laws and limitations of it since positing otherwise will violate the law of non-contradiction.” There’s a confusion here about the meaning of “universe.” Somebody who offered this objection could not be using Dhorpatan’s meaning, because that would be to say that god created reality. And if god is real, that would mean god created himself, which is nonsense. What they mean, instead, is that God created the physical cosmos, and is therefore not bound by its rules. But that objection fails because the rule in question—the impossible of an actual infinite—applies to all of reality, not just the physical cosmos. And Dhorpatan is right to say that it is a contradiction to say that a rule which applies to all of reality does not apply to all of reality, god being the exception.

The third rebuttal is that “God is outside the universe, and is therefore not bound by the realities that beings inside the universe would be subject to.” We have already addressed this subject above.

There ye have it. Maybe I’ve made some mistakes in thinking somewhere, but hopefully it’s at least obvious that Dhorpatan’s argument needs a little more meat.

Sunday, August 01, 2010

How to prove God does not exist



It has been my observation that the majority of atheists who attempt to defend their atheism choose to defend weak atheism (mere lack of belief in God) rather than strong atheism (the positive view that God does not exist). And among those who actually defend strong atheism, it has been my observation that the majority of them defend it more with bluster than with carefully thought out logical argumentation. It is very refreshing for me to see an exception from time to time. This video attempts to defend strong atheism, and to do it carefully and logically. I really appreciate that.

And since I have such an appreciation for the attempt, I think it deserves a response.

He begins with the law of excluded middle. God is either infinite or God is not infinite. By "infinite" he appears to mean "beginningless." If God is not infinite, then God had a beginning, which means God must've had a cause to his existence, which is clearly unacceptable to most versions of theism, not to mention unparsimonious. So the only viable option for theists (especially Jews, Christians, and Muslims) is that God is infinite, i.e. beginningless. I totally agree with him so far.

The next part is the crux of his whole argument. He argues like so:

1. Actual infinities cannot exist in the universe.
2. God is actually infinite.
3. Therefore, God cannot exist in the universe.

I would take his first premise a step farther and say that actual infinities cannot exist in reality, whether in the universe or not. That would avoid the objection that God does not exist in the universe, which he attempts to answer later in the video.

But the problem with his argument is that it commits the fallacy of equivocation. He is equivocating on "infinity." When he says that infinities cannot exist in the universe, he means there cannot be an actually infinite number of things in the universe. But, of course, when theists say that God is infinite, they do not mean that God is an actually infinite number of things. God is only one thing. Trinitarians say that God is three persons. Personally, I don't know what most theists mean when they say God is infinite, but since the person who made this video equates "inifinity" with "beginninglessness," I can only assume he means that God has existed for an infinite amount of time.

Let's pursue that. To avoid equivocation, he would have to be saying in his first premise that the universe as a whole, as well as everything in the universe, must have a beginning. It cannot have existed for an infinite amount of time, because time itself cannot be infinite, i.e. beginningless. But that presents problems for his argument because he previously argued that if God is not infinite, then God must have a cause, which means God cannot halt an infinite regress. But the same problem is true of the universe. If the universe had a beginning, then by his reasoning, the universe, too, needs a cause. How will he avoid an infinite regress?

There's another problem with his argument. The second premise--that God is infinite--is based on the notion that God is beginningless. Beginningless, then, amounts to an actual infinite. But is that true? If something does not have a beginning, does that mean it has existed for an actually infinite amount of time? I would say not, because if time itself had a beginning, then whatever caused time to begin to exist, cannot have come into existence with time. Since it is causally prior to time, it is beginningless, even though it has only existed for a finite amount of time. And that's exactly what William Lane Craig has been arguing for years. Since it is possible for God to be beginningless, even though God hasn't existed for an infinite amount of time, it is fallacious to invoke the impossibility of an actual infinite to disprove the existence of a beginningless God.

Next in the video, he answers possible objections. He brings up three rebuttals that all basically amount to the same thing--God is not bound by the laws of the universe. Basically what this amounts to is that since "infinities cannot exist" is a law that applies merely to the universe, and since God isn't bound by those laws, that God can be infinite. I agree with him that these rebuttals are fallacious, but disagree with him about why they are fallacious. I think they are fallacious because "infinities cannot exist" is not merely a law of the universe, but a metaphysical law that applies to all of reality, whether in the universe or not. So it won't do to say God can be infinite just because he's not bound by the laws of the universe. It is logic that prevents actual infinities, not the physical properties of space, time, and matter.

But let's look at his rebuttals anyway.

The first objection is that since God is spiritual, he isn't bound by the same things non-spiritual things are bound by--presumably meaning he can be actually infinite even though nothing else can. The rebuttal is that it doesn't matter whether God is spiritual or not, since either way, God is real, and if God is real, then he can't exist within the universe. What exactly is the objection here? I admit I had to think about that for a while. Of course nobody claims that God is part of the universe, so his rebuttal doesn't seem to work at all. Maybe he's objecting to the doctrine of God's omnipresence, since that would require that God is located within the universe. But even if that were true, what has that got to do with the limitations of actual infinities? I confess I don't know.

The second objection is that since God created the universe, he isn't bound by its rules. He says this argument fails because anything in the universe is bound by its rules. If you say otherwise, you are violating the law of non-contradiction. There seems to me to be two problems with this rebuttal. First, the objection does not assume God is in the universe, only that since he created it, he is not bound by its rules. Second, even if the impossibility of actual infinities applies only to the universe, it is far from obvious that it must apply to anything in the universe since it seems at least possible that something which entered the universe from the outside may retain some of its properties. In case I'm not being clear, let me use an analogy. Let's suppose I've got a glass of water. Since water has certain properties (e.g. being a liquid), I can say that anything in my glass has these certain properties of water. But of course it wouldn't follow that anything I put in the glass must also have those properties just because I put it in the glass. Putting a spoon in the glass wouldn't make the spoon a liquid. In the same way, putting God in the universe wouldn't force God to take on all the properties of the universe.

The third objection is that God exists outside of the universe, and is therefore not limited by its rules. His rebuttal is a blatant case of begging the question against God's existence. He simply defines the universe as "everything that exists," and then excludes the existence of God since God is said to be outside the universe. Well, of course if you begin with the assumption of naturalism, you're going to arrive at the negation of anything supernatural, including God. Whether the universe is, in fact, all that exists is the issue under dispute. If God exists, then it isn't true that the universe is the only thing that exists.

In the comment section he responded to one person by saying that several credible sources define the universe as "everything that exists." Well, first of all, that's not a definition of the universe. It's a philosophical point of view about reality. Second, definitions are not arrived at by experts discovering them. Definitions are conventional. Third, as any critic of the ontological argument knows, you cannot define things in and out of existence. Fourth, several authorities define the universe as the sum total of space, time, and matter/energy, not as "everything that exists."