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Originally posted by BooBaa
Ok, I was watching the greatest movie ever (donnie darko)
Originally posted by andhow
The explanation sounds a lot like Back To The Future 2, to me... LOL!
*going off to watch Donnie Darko to get an idea of where the heck you're coming from*
Originally posted by ThunderCloud
According to many scientists and science fiction writers, that wouldn't destroy our reality; it would just ensure that John Walter would never get back to his reality. John Walter's act would create two timelines -- two realities, both of which branch out from 1834. If John went forward in time again to 3076, it wouldn't be his 3076; it would be our 3076.
In theory, the number of timelines (of 'realities') depends on how many people have travelled back in time and created a paradox. Could be thousands; could be just a few; could be none.
The 'multiple realities' theory comes from quantum physics, and quarks... it gets into some really crazy scientific territory...