If I got in a time machine and went into the past a day, and convinced myself to get in the time machine and go back a day repeatedly, and suddenly there were 2 billion instances of me, and the I was killed (after getting out of the machine), would all of my subsequent selves be dead too? Cause I am thinking I could take over the world. All I need is a time machine (which I may or may not already have).
I think the paradox of you not being there to get in the time machine the first time is sufficient paradox to make the other moot.
I said perhaps because I am not claiming it to be fact... but is it not possible? Stephen Hawkings aside? Yes, I am taking the dimensional angle.