What if the human being successfully created a time machine?

Question

If they could return to the past and changed the events, such as preventing Adolf Hitler from beginning the WWII, what would happen to us? According to A.Einstein, we can't create one, can we?

Answer 1

If it were possible to travel into the past, time travelers from the future would have visited the present. There is no evidence of this.

As you have probably heard, a person traveling into the past could possibly create a paradox, which, you have probably also heard, would be a bad thing.

What you, perhaps, have not heard is that it is not possible to create a paradox, accidentally or intentionally.

They are simply impossible. That is their hallmark.

This, quite simply, is why it is not possible to travel into the past.

P.S.

WWII is deemed to have begun with the Japanese invasion of Manchuria.

Answer 2

that right there would be the end.

what happened, happened and it can't be changed. the world would be different

also all those people who died would probably die a different way. if they were supposed to die then so be it. we just have to remember the past, so we don't repeat it.

Answer 3

If we could, and I believe we cannot, then we could never know anything about the past with certainty, because someone could go back and change it.  To believe in returning to the past you have to believe somewhere the past is the present, that what happened did not necessarily happen.  What's done is done, end of story.  Though time travel fantasies can be fun.

Answer 4

Well think of it like this, If a time machine were plausible then there would be different "us's" like Myself an hour ago, and another myself an hour from now, If that were true then someone in the future would have created a time machine and traveled back in time, no one has heard about it, so, it can't happen

Answer 5

nope... we cant see "future" people walking around us now huh...