Quote Originally Posted by The Unknown Guru View Post
EDIT:
Quote Originally Posted by The Ceej
There's nothing in the laws of physics to prevent time travel.
There isn't anything to prevent going forward, but you can't go backward. To go back in time, you would have to exceed the speed of light, which is clearly impossible.

<url ="http://www.lifesci.sussex.ac.uk/home/John_Gribbin/timetrav.htm">Why Time Travel Is Possible</url>


Quote Originally Posted by John Gribbin, PhD
Physicists have found the law of nature which prevents time travel paradoxes, and thereby permits time travel.