Time Travel Related: Does The Past Exist?

[Johnny_L.A]

@ralph124c

Most discussions about the possibility of “Time Travel” posit that the 4th dimension (time) is similar to the spatial dimensions-i.e. one can reverse along the time dimension, and re-enter the past. But does the past exist in any meaningful sense? I would say no- someone who lived in the 1700’s is dead and his body is dust-his house might still exist, but it is in a state of disintegration-just as entropy increases. So, based upon our experience (of the mundane world) time travel would seem to be impossible-unless the universe is a lot stranger than we can imagine. Is the present the only state that can exist?

Does the past exist?

@ralph124c

Nope, the past is gone; all the atoms that comprised the past have been recycled into the present. This is why time travel is impossible: becuase you and i contain millions of atoms that were once part of other people. Take my body-I have several million atoms that were once part of Julius Caesar-he doesn’t exist anymore.