Going Deeper with Joseph Gordon-Levitt
StarTalk Radio
00:00
I Wasn't You in Third Rock?
Stephen Hawking thinks there is no solution to it at all that we will discover a new time travel conjecture. The problem comes about with the grandfather paradox, right? Where you go back and you prevent your grandfather from meeting your grandmother or in a terminator version of that,. You kill your grandfather so that you're never born to be sent back in time to meet your grandfather. So there's a paradoxical loop problem.
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