2006-08-16 06:59:45 · 11 answers · asked by oneindia 1 in Science & Mathematics ➔ Physics
Wow, if I had a penny for each time I'd answered this question... I would be rich...
Nothing will happen. Try the grandfather paradox:
1. Go back in time, to when your grandpa did not yet have kids.
2. Kill Gramps.
3. No gramps, no mom or dad, no you.
4. No you, you cannot go back to kill gramps.
5. Gramps is then alive, mom or dad is alive, you live.
6. Cycle repeats.
The ways to avoid this unending cycle are to say:
1. Time travel is not allowed.
2. Any time traveler will disappear in the current dimension he is in, and nothing happens in your timeline, except you disappear.
2006-08-16 07:13:56 · answer #1 · answered by dennis_d_wurm 4 · 0⤊ 0⤋
Firstly you cant go back in time. Even if you could you would not be able to change the future since there is something called destiny. You cant change that. If you could you would be GOD. If you can let me also know. I too am interested in doing that.
2006-08-16 14:07:00 · answer #2 · answered by ashutosh_mandelia 1 · 0⤊ 0⤋
The grandfather paradox is a paradox of time travel, first conceived by the science fiction writer René Barjavel in his 1943 book "Le voyageur imprudent" ("The imprudent traveller"). The paradox, stated in the second person, is this: Suppose you travelled back in time and killed your biological grandfather before he met your grandmother. As a result, one of your parents (and by extension, you) would never have been conceived, so you could not have traveled back in time after all. In that case, either your grandfather would still be alive and you would have been conceived, allowing you to travel back in time and kill your grandfather, and so on; or, by another theory, you could have created a new timeline in which your parents and yourself never existed, but your timeline still is intact in order to get to the past and creat a new timeline which was exactly equal to your at the time of your gradfather death.
Even the tiny change in the past can change the future in ways you never could dream off, in this case the future new timeline.
The Novikov self-consistency principle and recent calculations by Kip S. Thorne indicate that simple masses passing through time travel wormholes could never engender paradoxes — there are no initial conditions that lead to paradox once time travel is introduced. If his results can be generalized they would suggest, curiously, that none of the supposed paradoxes formulated in time travel stories can actually be formulated at a precise physical level: that is, that any situation you can set up in a time travel story turns out to permit many consistent solutions. Things might, however, turn out to be almost unbelievably strange.
There could be "an ensemble of parallel universes" such that when you travel back in time and kill your grandfather, you do so in a parallel universe in which you will never be conceived as a result. However, your existence is not erased from your original universe.
Another resolution, of which the Novikov self-consistency principle can be taken as an example, holds that if one were to travel back in time, the laws of nature (or other intervening cause) would simply forbid the traveller from doing anything that could later result in their time travel not occurring. For example, a shot fired at the traveler's grandfather will miss, or the gun will jam, or misfire, or some other event will occur to prevent the attempt from succeeding. In effect, the traveller will be unable to change history, because for him it has already occurred. It can also occur that the time traveller does not merely fail to prevent the actions he seeks to prevent; he accidentally precipitates them.
2006-08-16 14:09:19 · answer #3 · answered by williegod 6 · 0⤊ 0⤋
Yawn
Not again?
You will be the 193rd person to go back and change the future and I'm getting bored with it!
I keep making the same flippin' mistakes!
2006-08-16 14:05:47 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Not really. Whatever you change, the timeline will SPLIT at that point, into your ORIGINAL future, and a NEW future, created by whatever you have changed. You will remain on the NEW timeline, when you attempt to return.
2006-08-16 14:06:05 · answer #5 · answered by Quietman40 5 · 1⤊ 0⤋
no because techinally that future would have never happened. Also einstien said you can only go back in time not into the future because the future hasnt happened yet. so you would never know if you did.
2006-08-16 14:06:14 · answer #6 · answered by red sox! 3 · 0⤊ 0⤋
it depends on what you do. If you went back to 1929 there is nothing you could do to stop the stock market crash. But you could stop Lincoln's death which could alter future events. Of course if you do alter the past it could have disasterous results.
2006-08-16 14:07:56 · answer #7 · answered by mcskillins 2 · 0⤊ 0⤋
if you went back in time, your presence in that time you returned to would have already happened, and thus you would change nothing. of course, time travel is all theoretical anyway...
2006-08-16 14:05:10 · answer #8 · answered by FirefoxFan 2 · 0⤊ 0⤋
Going back in time is an impossiblity. So if you can do one impossiblity you can do as many impossiblities as possible. So why bother?
2006-08-16 14:47:10 · answer #9 · answered by Dr M 5 · 0⤊ 0⤋
it would definitely change if you do something differently when you go back in time.........
2006-08-16 14:05:44 · answer #10 · answered by Anonymous · 0⤊ 0⤋