The Reality of Time Travel

"Time travel is theoretically impossible, but I wouldn't want to give it up as a plot gimmick."



— Isaac Asimov





So. Back to the Future. You know, the scene in the third movie where Marty complains they can't get the time machine to 88 mph because they'll run into a movie theater, and Doc says, "You're not thinking 4th dimensionally, Marty! When you go back to 1885, none of this will be here."



It's clever, cuz see, even though you're traveling to a different time, you're still in the same...