Its possible to send energy faster than light. BUT, that doesnt mean its going backwards in time. It arrives faster but not
before you send
it.
There is nothing to actually stop this from happening, as it fits in with the majority of known sciences.
This could be handy for sending messages over huge distances, ie Mars, where you have a large time delay of 6-41 minutes. This is speculation though
and how much time you shave off the time is a different matter. The fastest speed needed there would be 41xLight Speed or hopefully faster for
further away where the signal would be instantaneous.
As for sending information back in time, I dont think its probably, or ever would be available. The problem is cause and effect. If you sent a
message back to yourself, what happens if you dont send the message when youre supposed to?
Do you get a paradox effect, with the universe ripping itself apart, or just a migraine caused by the
GOD
OF TEMPORAL MECHANICS
[edit on 25-3-2008 by Mark Roazhar]