The simplest way out of the puzzle of time travel is to say that it can't be done. That's very likely the right answer. However, we don't know for sure. (Sean M. Carroll)

The simplest way out of the puzzle of time travel is to say that it can't be done. That's very likely the right answer. However, we don't know for sure.

Sean M. Carroll

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answer done likely right sure travel way

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