I think about this often: For example if you hypothetically went back in time and made a small cut on your baby-self (morbid, i know, but a simple example), what would happen?
A.) a scar would immediately appear on you exactly where you cut your baby-self.
B.) the baby would be cut, but you would still have no scar. Your baby-self would grow up in a different chain of events than what you have followed so far. The baby's whole future would change.
C.) You would be physically unable to create a cut on the baby because the baby's %26quot;time path%26quot; cannot change. It cannot be harmed other than what has already happened to you in your own past.
or would something else happen? What do you think????How does time travel work?Depends on the train of thought you follow. The String Theory train of thought says that as soon as you make the scar, the time line splits leaving the string where you weren't cut running, and a new one made with you now in it, meaning you could kill yourself [kill the baby] and you would still exist because its a different time line.
Edit: Theoretically there is nothing that would prevent time travel. It is debateable whether the laws of physics would permit it but there is nothing that says categorically that it is not possible only speculation.
http://en.wikipedia.org/wiki/Time_travelHow does time travel work?Time Travel Paradox ===%26gt; Can't happen if we have free will. If we don't have free will, you cannot change the past.
Time Travel into the future is possible. If Free Will exists, then time travel into the past is not possible.
Two Time Machines for travel into the future:
Type 1
Build a space ship capable of near light speed. Put it into a long orbit like a comet that returns to earth every 100 years. Get in the ship and blast off. When you return you will have aged a few years and be 100 years into the earth's future.
Type 2
Build a space station in near orbit to a Black Hole. As long as you are in the space station you age very slowly. When you leave you could be 100s of years in the future.
Special and General Relativity makes either of these possible. The science is solid, the engineering will take some work.
Time Travel into the past:
The possibility of travel to the past hinges on: Does Free Will exist? If we have Free Will then we can change the past and thus the present. The Law of Causality does not allow this. All time travel paradoxes arise from the fact that causality does not allow us to change the present. But, IF everything is fixed and we can’t change it, then some of us, at least, could be time travelers caught in a loop stretching enough years to cover a life time or more maybe 1000s of years. Time Travel need only involve “quantum leaps” that prevent us from meeting ourselves and we live the same lives over and over with no memory of the last time we did it. Something like Joe Haldeman’s “The Accidental Time Machine” would work.
Modern Theoretical Physics offers another way out of the Time Travel to the Past Paradox trap. If there are an infinite number of parallel universes, we can travel back, violate causality and snap to a different universe that results from us changing the past. I.e.: Go ahead and kill your father. You snap to a universe where your father ain’t your father, but your father, he don’t know. Or, maybe he does and he does not care. Or, your mother was raped. Or, .........
See: “Closed Timelike Curves in Asymmetrically Warped Brane Universes,” Pas, Pakvasa, %26amp; Weiler
http://science-junkie.group.stumbleupon.…How does time travel work?Theoretically time travel simply cannot happen. End of story! However if you were to read most any material by Stephen Hawking, believed by many and myself to be the most complete and authoritive astro-physicist living today, (whom by the way I got my first statement), I believe you come up with the very best detailed explanation of an answer to your request. Hands down!....or up?...or did I say that yet?...or will I say that later?
* read Stephen Hawking
