I myself believe that there will one day be time travel because when we find that something isn't forbidden by the over-arching laws of physics we usually eventually find a technological way of doing it.
Sentiment: NEGATIVE
Time travel may be achieved one day, or it may not. But if it is, it should not require any fundamental change in world-view, at least for those who broadly share the world view I am presenting in this book.
I've always been a big fan of time travel, and I'm very into the notion that some day we'll be able to do it. Beam me up!
Even if it turns out that time travel is impossible, it is important that we understand why it is impossible.
Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that we could warp space-time so much that you could go off in a rocket and return before you set out.
The one thing we know about the future is that it comes only one day at a time.
I find the whole time travel question very unsettling if you take it to its logical extension. I think it might eventually be possible, but then what happens?
If you have a wormhole, then you can turn them into time machines for going backward in time.
Time can behave like another direction in space under extreme conditions.
In the future, maybe quantum mechanics will teach us something equally chilling about exactly how we exist from moment to moment of what we like to think of as time.
The bottom line is that time travel is allowed by the laws of physics.