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Originally Posted by DewMan
Some famous physicist, I forget who (Sagan or Hawking or someone of their ilk) pointed out an obvious bit of logic which seems to disprove that time travel can happen.
If time travel can indeed happen, and there are people in the future that can travel in time, then why haven't any of them visited us from the future?
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Well, the thread below this one seems to be about that very type of traveller. I don't necessarily believe that John Tritor travelled here from a possible future, but I don't believe that it's impossible.
It seems fairly obvious, based on personal experience alone, that there is more to the phenomenon of "time" than simple linearity. Simply reference any occasion of a 'deja vu' incident, or a dream that actually ends up happening precisely as one dreamed it. I'm sure this stuff doesn't only happen to me, so the obvious answer is that we can at least be
aware of a point in time that has not yet happened, so perhaps time can indeed be manipulated conciously in some manner. That I think it
can be done does not necessarily mean that I think that it
should be done, should anyone intelligent enough to figure out how to do it solve the problem.