I know I'm like two days late but whatever.
At 10/9/12 02:02 AM, Gr3ySock wrote:
There is quite a lot of supporting theories for parallel universes to exist but yes they are just theories i guess, although so is gravity.
Gravity may be a theory but at least it's a testable one.
Also i don't see how conservation of energy and mass has anything to do with the other universes seeing as it has nothing to do with ours apart from being parallel and a universe.
The first scenario involves the creation of a new universe when a choice is made.
Why would a new universe just form when a different decision is made. I'm saying what if they already exist just with different possibilities...I'm not saying they cant form but what if they already do exist and every other possible situation that could possibly happen has happened and we are left with our reality.
Because of this snippet from the OP:
If all of this is true then technically time travel should be possible because you are only skipping forward and backwards through the 1/infinite situations/possibilities that has to have happened already.
Traveling through these universes at any efficient speed would be impossible because you would have to travel faster than light.
Traveling through these universes at a non-efficient speed... well, the edge of the (observable) universe is about 45 billion light years away.
Furthermore, by the many-worlds interpretation of quantum mechanics (which is similar enough to what you're thinking of), each of the parallel universes would be incapable of communicating with each other.
However, what you (theoretically) could say is that there are an infinite amount of parallel universes already in existence, and every event that's ever happened has a different outcome in a different universe. That, however, doesn't allow for time travel, doesn't change anything about our universe, and still isn't testable.