It's complicated to explain.sha786 wrote:How far in the future are you from?
You're all in the future now, and the past and the present.
Asking where I'm from is an impossible question. There is an infinite future and as such with time travel I could go forward infinitely. This means that I could have come from any future point back to your present. My coming from the future doesn't mean that there is a present (your present) me walking around too, because it's my body I can travel through time to any point within my lifespan. To travel outside my lifespan I would need a receiving vessel, somewhat like a mind-controlled robot (in simple terms) that would only be controlled from future-time, and to do this into the past is difficult for many reasons. Into the future is easy because the technology is there.
This is why no one from the time travel era has gone back to prevent dictators gain power etc.