If you could go into the past is it impossible to change something without disrupting the future?

Question

I've always been told that if you could go back in time you can't change something from happening without causeing a rift in time. I'm curious to see what others think..

Answer 1

Well Ur question is quite interesting. This question had generated one of the healthiest and most fruitful debate among scientific community.

Dr. Hawkins earlier said that going back to past is impossible, bcos if after going in past someone murder his grandmother then he will block all the ways to his own future and so time will end there.

But then others among scientific community solved this puzzle. they said that it is true that if after going in past someone murder his grandmother then he will block all the ways to his own future but in this way he will not end the time but create a parallel universe in which the future will be without his grandmother, father and he himself.

So if someone can go to past and change something there then he will create a parallel universe in which events are one of the infinite permutations possible of his 'actual' future

Answer 2

If one could go back to the past, then one couldn't get back to the future as the time line would change from that person's presence in the past. It would be a one way trip so changes made wouldn't alter the future anymore that what happens every second.

Answer 3

A good hypothetical scenario that examined that question was a short story by Ray Bradbury (Also a film by the same title) Called "A Sound of Thunder."

I'd suggest renting it out to see how they show how the smallest insignifigant change in history completely changes the world. It's a fairly recent movie.

Answer 4

I like the approach that Heinlein used in his sci-fi novels. Basically, a paradox can be paradoctored. Your buddy was dead a thousand years ago, so you buried him in space, but when you went back for the body, the transmitter was dead. That's because future you went back, grabbed your buddy, gave him the benefit of a thousand years of medical science (he wasn't THAT dead yet), and took the transmitter with you.

Basically the idea was to play around with the parts of history that are assumed to be true but aren't a specific fact. (If I didn't see it happen, it might not have!)

Answer 5

i might want to favor to ascertain some issues contained in the previous as they precisely befell, and in no way on a writers foundation as you're saying. yet with my own eyes. i do not extremely favor to understand the destiny, because even if you're saying not that complete component about replacing it when you've considered it. because, inspite of what we assume of we'd want to do, in case you probably did not like what you suggested contained in the destiny, what number of human beings does not attempt to regulate it by doing issues otherwise when we lower back to the cutting-edge? And by doing issues diverse, we'd want to shrink to rubble extra then our own lives.

Answer 6

I think you have saw that show"Quantum Leap" too many times.

Answer 7

your presence would change something