The concept of time is fucking terrifying.
It's like a river that flows out into another, into another, and another, until it hits the ocean then somehow finds it way back to a river and flows back toward the original river. Everything that could possibly happen has happened and will happen cause that river has so many interconnected paths that it impossible for things to not happen concurrently. This leads to things like deja vu and the Mandela affect. But I believe it can also lead to points where things get wonky and people from one point in time can end up in another, or people from one timeline can end up in a completely different one. I could go on but I should definitely stop now.
(This is this is the asks series were im feverish and slightly high on meds.)
Yeah I think about shit like this sometimes, but then I Remember Star Trek probably did it already.