Straight out of science fiction: Physicist discovers that paradox-free time travel is mathematically possible

submitted by Drewski from rt.com

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[–]TheJamesRocket 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

It's also flawed in that it posits that in every moment of time there is a copy of the universe.

Not quite. That supposition comes from a particular interpretation of quantum mechanics, which most call the Many Worlds Theory. This is a very controversial position among scientists.

[–]Intuit 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

I'm not even talking about indeterminism. A classical universe with time travel still posits infinite copies of the universe existing all at once for every moment of the past (and future).