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Originally Posted by CandleInTheDark
As I understood:
A 4th dimensional being would be able to see it's past, present and future.
A 5th dimensional being would be able to see all of it's possible pasts, presents, and futures.
A 6th dimensional being would be able to transport (via folding of the 5th dimension) to any of the possible pasts, presents, and futures of that universe.
So the sixth dimension is time travel.
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I think "time travel" as we generally think of it is a 5th dimensional being moving in 4 dimensions. Usually we think of time travel, as popularized by media, as going back in time to create a 5th dimensional fork-that is, change the past, create a new future timeline. I think that's mostly traveling in the 4th dimension since the 5th dimensional being just needs to go back on one timeline to change something in it to create a fork.
One of my friends who is into high level physics told me that the explanations in this flash are a little off from what he's learned. Past 4, it defeinitely gets hard to wrap your head around.