Chronology Protection Conjecture Quotes

If time travel were possible, you still wouldn't be able to change the past - it's already happened!

I have experimental evidence that time travel is not possible.

Whether you can go back in time is held in the grip of the law of quantum gravity.

Originally, the burden of proof was on physicists to prove that time travel was possible. Now the burden of proof is on physicists to prove there must be a law forbidding time travel.

The river of time may fork into rivers, in which case you have a parallel reality and so then you can become a time traveler and not have to worry about causing a time paradox.

The simplest way out of the puzzle of time travel is to say that it can't be done. That's very likely the right answer. However, we don't know for sure.

People who think about time travel stories sometimes think that going back in time would be fun because you would have all the information you needed to be much more astute than the people there, when the truth is of course you wouldn't.

In Einstein's equation, time is a river. It speeds up, meanders, and slows down. The new wrinkle is that it can have whirlpools and fork into two rivers. So, if the river of time can be bent into a pretzel, create whirlpools and fork into two rivers, then time travel cannot be ruled out.

I think time travel is really tricky. But if there's a logic and a complete and well-thought-through paradigm for it, I think it can be really interesting. Some of my favorite time-travel movies just make me think and, you know, the 'what if' question becomes a big one.

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 know, on 'Rick and Morty,' we had the time where they unfreeze time, and they're in trouble because of it. The time starts splitting. That episode, we got a little too focused on 'how,' the hows and the science behind it, and oh my God, it was - it was spiraling us for sure.

It was quite a surprise when I realized that with a single wormhole you could have time hook up towards the future or towards the past and that you can actually manipulate the wormhole and change how time hooked up.

I think the idea of time travel is very seductive.

Time travel, by its very nature, was invented in all periods of history simultaneously.

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?

Time travel is a wonderful thing, isn't it?

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.

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.

If you have a wormhole, then you can turn them into time machines for going backward in time.

Thinking about time travel may seem like something humans have been doing since the first caveman dropped the first rock on his foot. But, even to begin to imagine the possibility of time travel, your mind must be able to wrap itself around the notion of a past and a future.

I put instant coffee in a microwave oven and almost went back in time.

The bottom line is that time travel is allowed by the laws of physics.

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.

Time travel is a fantasy we all have. The 'Back to the Future' series really exploits that wish.