posted on Feb, 2 2007 @ 01:31 AM
Time travel has to be self-consistent. If you read J. Richard Gott's book "Time Travel in Einstein Universe - the physical realities of time
travel" or something like that - a book that came out a couple of years ago now - well - about 2002 or so, then you get an idea what concepts are
involved in traveling in time. That concept of self-consistency is one of those concepts that can not be ignored. So it time travel is possible and
you went back into the Past, the future would still have to be the same as when you were in the future and you started to travel back in time. Right
now there are theories out there both ways either con or pro but if you look around on the Internet a person can find out what is thought about the
subject. Anyway in Einstein's formula, a positive result is space travel and if the result of the formula is negative then it is time travel.
For instance if you had a big mirror and could put it out in Space at a distance of 10 light years, then on the Earth you could see it, then you would
see the Earth as it appeared in the Past - taking light 10 light years to get there, and 10 light years to get back. If it was detailed in the image
you received you would have seen the Earth as it was 10 years previously.
J. Richard Gott goes through examples or story after story and explains the concept of time travel and what it means in the first place. That seems to
be a good starting point for understanding that if you beat the speed of light to a star like Alpha Centauri because Space is curved by Mass then in
effect you have time traveled since nothing can go faster then the speed of light. To do that you have to warp space and mass closer to you than it
will take light curving to travel in time. Without looking at the book again, and reading it, then there are various forms of time travel but all of
those forms of time travel have to be self-consistent in the end. If you achieve that with any form of time travel then you have the possibility that
a person can travel in time whether to the stars in Space or any other way. What is needed is experiments that enlarge the theory or prove what can be
done. One of the experiments coming up is by a scientist called John G. Cramer where he theorizes that since there is entanglement like in quantum
entanglement that Einstein called Spooky Action at a distance, that actually 'photons' that are entangled must travel backwards in time so the
entanglement takes place. ( If one photon is spinning clockwise and with entanglement another photon a long way away is spinning counter-clockwise
then he is doing an experiment to prove that the photons to be entangled in the quantum theory actually had to travel back in time so as to tell the
other particle since they both are entangled in the now time.
(Well, something like that perhaps then.)
There was a picture and article somewhere but I did not find it.