Originally Posted by christopher Martin;4509896
YouTube - Is Time Travel Possible?
I'm not going to click that, but I do know that generally physicians theoretically agree that time travel is possible (Technically including Einstein), but here's one reason why not:
Originally Posted by ceolsige;4509839
How would it even be possible to use a cell phone anyway if that was really someone who'd time traveled? How could it pick up a signal during the 1920s?
There would have been no masts.
There was another picture a few months ago that gained popularity, of a guy wearing iPod headphones and walking down the street in a normal hoodie surrounded by people in typical 50s clothing, this is just an extension of it.
Physicists seem to almost see any possibility as almost a probability, which is fair enough- you spend thousands of man hours crunching boring equations and you want to tell people at a dinner party how time travel could
happen, while nothing's stopping the theory of time travel there's also nothing to support it, and any physicist speaking of the issue will gloss over that.
Regardless, the theory that Steven Hawking buys into is the possibility to create a black hole, which is impossible, and even if it was, any person would instantly be vaporised when entering into one. IMPOSSIBLE.