Yup, once we invent a time machine, we will have people popping in and saying hi.Al_Florida said:I like the theory that says that you can't travel back in time further than the time when the time machine itself existed. This is why we don't see any time-travelers from the future; the time machine hasn't been invented yet.
I'd think if they were smart enough to time travel, they could figure out a way to prove it.Pooperscooper said:if someone went to the New York Times saying they were from the future they would be put into an insane asylum. The only place that would publish it would be the weekly world news. You know how many people believe that POS.
just so you know, Hugh Everett theorized that in the 40s or 50s, i believe, in his doctoral dissertationkenshi said:My theory regarding that is if someone did travel to the past, it would branch off another universe with a different causiality. Obviously you can't think of it as a straight line, or it causes paradoxes. And if they then tried to return to the future, they would find it changed by whatever they did, technically another universe. Of course that's assuming it's even possible.
Not if they understand it, and understand that traveling back could really screw up the future, as Kenshi said. If someone came back, and participated in the "present" or "past", they could destroy the future as they know it...GreenBird said:if time travel were possible, someone in the future would have done it and come back to tell us it is possible.