Quote:
Originally Posted by tsofian
Really, how do the people in the universe know its one in a million? To the people in it (except for time travelers) there is only one so to them, it is worth fighting for.
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But BEM
is a time traveller. Either he knows that there are multiple universes (in which case he has to know that he is merely moving his personal consciousness between them without really changing anything and that therefore his efforts are meaningless) or he doesn't (in which case the whole "multiple universes" idea becomes completely and totally irrelevant).
Note that it is possible to be working in a single, mutable timeline... it just means that certain paradoxes and issues become problems and others don't. If there are multiple timelines then nothing matters, because jumping back immediately mandates that you move onto a wholly new timeline. The original timeline was predicated on you doing certain things, and there is 0% chance that you jump into the future and back again and continue your life 100% exactly as you would have had you not made those jumps. You go back and make some changes, no matter how small, and that means you are in a new universe.
But what about the old universe? It has to exist, to avoid paradoxes, and therefore it must presumably continue. This means that the apocalypse is still happening in that universe, you have just entered a new universe where it is ameliorated somewhat.
But doesn't that mean you at least saved the new universe? No. Because unless you invested a universe's worth of energy, you didn't create that universe, you just moved into it. Indeed, there are a lot of theories that suggest that time travel is impossible for these reasons without either there being infinite universes or a single mutable universe that allows for "sideways time" or some other method that describes how you can change a universe without changing it.