Faster than the speed of light
By now, you've heard about the physicists in Europe who measured the speed of some neutrinos traveling faster than the speed of light. There are lots of articles I could've linked to, but this one mentions time travel, and I want to talk about that.
Somebody on facebook asked if it had any implications for arguments for the existence of God. I'm not qualified to answer that question, so I'm going to answer it. That's just the way I roll. I'm a blogger.
Up until now, the word on the streets has been that it's impossible for anything to move faster than the speed of light. There are good reasons for this, which I have read in physics books and which I can't explain from memory. I've glossed over some non-academic and unreliable sources on the internet that say that if it's possible for something to move faster than the speed of light, then time travel is possible. That's what the article seems to be saying that I linked to above. If that's so, then it could spell disaster for the kalam cosmological argument. Lemme explain.
The kalam cosmological argument depends on the A theory of time (i.e. the tensed theory, the dynamic theory, etc.). Backward time travel is not possible on the A theory of time because there's no past to travel back to. Backward time travel is only possible on the B theory of time (i.e. the tenseless theory, the static theory, etc.). So if backward time travel is possible, then the B theory must be true. And if the B theory is true, then the kalam cosmological argument is not sound.
But one could argue backwards. If backward time travel were possible, then it would result in all kinds of paradoxes. But paradoxes like those that would result from backward time travel are not really possible, which means that backward time travel is not possible. But backward time travel WOULD be possible if the B theory of time were correct. Since backward time travel is not possible, the B theory of time cannot be correct. So the kalam cosmological argument could still be sound. One could go on to argue that if neutrinos could move faster than the speed of light, then time travel would be possible, but since time travel is not possible, neutrinos cannot move faster than the speed of light.
Physics. It messes with your head. It'll be interesting to see what happens, 'cause you know this experiment is going to have to be repeated.