Look folks, the theory of time travel did not even exist until writers started writing fiction about it.

Theoretical particle physicists wrote theories on how time travel might be possible, but only for a minute sub atomic particle, and then only for the briefest split second of time.

It all theories and hog wash. It does not exist and it will NEVER exist in a stable universe like the one we are in.

You can postulate all you like about folding universes and black holes but at the end of the day it's never going to happen in the next bazillion years.

Move on people and stop wasting energy on discussing this crap.