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How can I go back in time?

9 Answers
please can you answer me this question: how can i go back in time?,please quickly, thanks
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Backward time travel would appear to allow all sorts of violations of causality and paradoxes such as the famous "grandparent" paradox: this has been stated in many forms, but it essentially it means somone or something travelling back in time and doing something which would make it impossible for them to have travelled back in time in the first place, such as killing their grandparents.

Because of this, it appears that backward time travel must be impossible. We have yet to find a way of proving that it is impossible, but this probably reflects our currently incomplete understanding of the laws of physics, and indeed, time.

One slightly troubling feature of the laws of physics as we currently understand them is that they appear to be time symmetric, that is, they work equally well forwards and backwards in time. This, along with the fact that certain solutions to Einstein's theory of general relativity appear to permit backward time travel, has led a minority of scientists to speculate that it might be possible after all.

These solutions to general relativity were discovered by the mathematician Kurt Godel, a good friend of Einstein's, and involved very extreme physical conditions, and it seems that Godel's conclusions may have been misunderstood. His point was that if general relativity is correct, and our understanding of time is correct, then backward time travel, under these extreme conditions, is possible. He believed, with good reason, that general relativity was correct, and that backward time travel was an absurdity because of all the paradoxes it would allow, and that therefore our understanding of time itself must be incorrect. In other words he was seeking to prove that our understanding of time must be wrong because it leads to an absurdity.

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C

I am curious to know why you want to go back in time. Is there something that you want to stop from happening? Someone you want to see again? An action that you want to correct? I've often thought about going back in time, and what I would change, relive, or do differently.

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P

Because of the grandfather paradox, we are unable to go back in time because the smallest change will affect you being born, thus making it impossible for you to even have gone back in time.

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M

Right now humans do not have the technology to go back in time. Maybe sometime in the future it will be possible.

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S

Each time you remember a past event you go back in time. Physically, it's not possible...yet.

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G

You can always try going to a place on a different time zone.

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A

Only in imagination can you go back in time.

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J

I don't think you can go back in time.

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M

It's impossible to go back in time

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