rogue49

Time is a measurement of "action"
not interaction/reaction...which is "probability"
or not inaction which is "inertia"

All of which are dimensions we live within.

Time can go either way, positive or negative, as we see in the mathematics of anti-matter.
However, we only see Time as "one-way", not because it acts that way,
but because of the Laws of Entropy.
which do NOT go backwards,
it doesn't matter whether you are matter or anti-matter.

This fact alone would make Time Travel difficult,
much less taking into account the fact that everything including our world and galaxy are moving too.

And any warp that "seems" to go back in time,
would be incorrect because,
that would be only perception.
A warp might bring you to an area of space, where light hasn't reached from your starting point,
making it seem you were viewing from the past.
but even if you moved back to the original area instantly.
That place would still be in the "future" or "present".

This is an illusion portrayed by many taking the numbers to the extreme, and leaving out other factors.

It's a nice dream but more needs to be considered.