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The initial conditions of the Big Bang singularity determined the direction of time to be always into the future.
To travel in time would mean exiting the event horizon of one universe and entering another. Because event horizons are moving in respect to each other. Navigation would be extremely interesting if not impossible. You would never find your way home.
Not that it would matter, because you would have to exit our timeline via a singularity & that is not a survivable option.