only thing i can figure is we got two theories.
1: every human being and thing on the planet has it's own 'universe', if alteredbob went back in time, and killed his parents, the bob he was before he left would be affected, but he would not be the same bob.
but seeing as two timelines can't occur at the same 'time' by logic, alteredbob must've gone to another dimension, where bob lives his life and experiences time at the same time as alteredbob experiences time only a few years earlier.
so how is it alteredbob can change the future in another persons timeline when he's living his own timeline?
i don't think it's possible in that theory to do so.
let's say alteredbob doesn't kill his parents.
when he reaches the point where bob is supposed to get born, a third bob is made. it's not the same bob as it was earlier.
why?
imagine you're a friend of bob, suddenly he dissapears.
now fast forward to the exact same moment as bob went back in time and became alteredbob. at that moment, an unlimited amount of alteredbobs and bobs would emerge.
let's imagine it from alteredbobs point of view, he arrives, sees bob leave back in time, but at the exact same moment, wouldn't the bob who went back in time just now come back right there and see yet another bob go back in time?
i mean it's just not possible.
an infinite loop i would say.
but seeing as the exact same matter can't be at the exact same place at the exact same time.. how could any of it be logical?
would bob have had to kill his father to prevent the loop?
heh i guess i ponder stuff like this too much.
i think sepiroth explained it best with the string and how everything is predicted into the big String.
but, for my POV, i believe time travel is impossible.
even though worm holes and all that may be able to make us travel in time theoretically, i don't think it's possible in the real world.
hence all this time travel talk is really redundant.
but fun to ponder
