Time is an absolute
truth regardless of the state of existence so long as it is not the
forever end. In the physical universe there need be motion of any kind for time to have something to be relative to. Time travel can not exist in the
popular sense. One can travel forward in time while seemingly no time passes for the traveler, but this is an illusion caused by being in some kind of stasis. True travel back in time can not occur.
This is not to say that instantaneous or near-instantaneous travel is impossible, just that such theories may not come into conflict with time'
s law.