A couple of days ago, Lawrence Krauss released a statement on his recent debate with William Lane Craig over whether there is evidence for God. (If you haven’t watched it, ctrl-click here to view it on YouTube.)
His statement was posted on Pharyngula, the blog of infamous self-styled “godless liberal” PZ Myers, and was also circulated on Richard Dawkins’ forum (the self-styled “clear-thinking oasis”).
Let me make a couple o’ comments on it:
It’s clear that the thing I found most embarrassing about Krauss’ part of the debate—his complete lack of understanding of the contingency argument—has in no sense changed.
This argument is about why is there something instead of nothing; it isn’t an argument about causes, as he characterizes it (apparently confusing it with the Kalam Cosmological Argument), but an argument about explanations or reasons. It invokes the Principle of Sufficient Reason: that everything that exists must have a sufficient reason for its existence. Obviously, most of the things we know exist could just as easily not exist; in which case, why do they exist? But we can also see that some things, like the laws of logic, must exist—they exist necessarily. God in the latter category; the universe is in the former. There is nothing about its nature that says it must exist, or that it must exist exactly as it does. This is really not disputed, to my knowledge, among either scientists or philosophers. In fact, the science seems to indicate that the universe could have existed in so many other different ways that we literally cannot conceive of the number. But in that case, we are back to asking why does it exist, and why does it exist as it does? Krauss has no answer.