In his interview with William Crawley, Richard Dawkins offers three counter-arguments to the claim that the extraordinary fine-tuning of the universe points to a cosmic designer.
Dawkins asks first where such a designer comes from. If a designer (let's say God) designed the universe, in other words, then what designed God? Dawkins holds elsewhere that if the extraordinary complexity of the universe makes the universe's existence highly improbable then the designer of the universe, which must be even more complex, must be even more improbable, in fact vanishingly so. So improbable must the desiger be that one is not rationally justified in believing it exists.
We have addressed this argument in a previous post and found it to be very unpersuasive.
His second counter-argument, which he conflates with the third in the interview but which is really a distinct argument, is what is called the Weak Anthropic Principle (WAP). It says that we should not think it so very special that the universe is as it is for were it not we would not be around to notice it. The fact that we exist means that the universe must be tuned precisely as it is.
Well, yes, but this misses the point. The question is whether the fine-tuning is a dumbfounding coincidence or whether it is intentional. Using the WAP as a counter-argument to the cosmic fine-tuning problem has been compared to the scenario where a man finds himself kidnapped and imprisoned by a psychopathic killer. The kidnapper has placed in the prison cell one hundred machines which are designed to simultaneously dispense a single playing card when a button is pushed. The kidnapper then tells his victim that when he pushes the button each of the one hundred machines wil produce a card at random from a deck that has been shuffled inside the machine. If any machine produces any card other than an ace of spades the prisoner will be automatically gassed and instantly killed.
The kidnap victim despairs of his chances of survival. They seem infinitely slim. The button is pushed. The victim tenses. And nothing happens. No gas. He looks at the machines and every one of them has produced an ace of spades. The man is astonished at his good fortune. How could it be that he is alive? Professor Dawkins would tell him that he shouldn't be astonished that each machine produced the correct card because had it not he wouldn't be alive to to take note of the fact.
This seems like a dodge, and it is. The prisoner has every right to wonder how such an improbable course of events could have unfolded to allow him to survive. He has every reason to suspect that the machines weren't selecting cards at random at all, but that the outcome was intentionally foreordained.
Sensing, perhaps, the absurdity of a resort to the WAP, Dawkins quickly imports a completely unscientific, non-empirical speculative hypothesis called the Multiverse theory. According to this, our universe is just one of an innumerable array of universes each having different parameters, values and laws. Given the existence of so many worlds, the chances are greatly increased that at least one world would be structured the way ours is. Think of it this way: The chances that somebody is going to be holding the winning lottery ticket increase as the number of tickets sold increases. Thus we shouldn't be astonished that our universe is tuned as precisely as it is because, given the number of worlds, at least one has to be suitable for life, and ours is it.
This might be an effective response to cosmic fine-tuning were there any shred of evidence that any other worlds exist, much more a vast number of them, but there is none. The theory is pure speculation invoked for no good reason other than to enable one to avoid the conclusion that our universe is intentionally designed.
Moreover, since the idea of multiple worlds is untestable, it's not a scientific theory. It also violates the principle of Occam's Razor which tells us that the simplest explanation that accounts for the facts is the best (a plenitude of worlds is far more complicated an explanation than the hypothesis that there's just one world plus a designer of that world), nor does it explain where the universes all come from and what creates them.
We have proof, of course, that information, beauty, harmony, etc. can be produced by a mind, but we have no proof that they can be produced by random chance. Yet, in order to evade the force of the evidence posed by the exquisite fine-tuning of the cosmos, we are asked to accept that chance has produced zillions of worlds, one of which has beauty, elegance, and law-like order.
To be sure, Dawkins could be correct. It's possible that the world is one of an immeasurable number of universes, but why believe that unless one is so dead set against the idea that there's a mind superintending it all that one will believe almost anything to escape having to believe that such a mind exists.
Part I of our discussion of this interview can be found here.
RLC