Past, Present, Future: Time Travel with Brian Greene
StarTalk Radio
00:00
Is There a Paradox of Time Travel?
Jim Kelly: How does a hypothetical paradox preclude the existence of time travel? Brian O'Neill: Information is this intangible thing. And I always hear physicists arguing about whether we lose or gain information every time you do something with a black hole. So it's really concrete when you think about it as information carried by stuff.
Transcript
Play full episode
