JB Manchak: Time Travel in Physics and What We Still Don't Know
3/16/20262 hr 18 min
Curt Jaimungal examines why physicists still can't resolve whether time travel is possible or forbidden.
What if you gathered every possible piece of evidence about the universe — every observation, past, present, and future — and it still wasn't enough? That's not a philosophical parlor trick. It's a theorem. J.B. Manchak proves it using the very tools of general relativity, and then connects it to Zen Buddhism's teaching on the self. This one is a quiet storm.
TIMESTAMPS: - 00:00:00 - Unknowability of the Universe - 00:05:14 - Space-Time Maximality Metaphysics - 00:11:02 - Time Travel in GR - 00...
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First 90 secondsSpeaker 10:00
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Curt Jaimungal· Host0:30
Some of them might allow for time travel. But things start getting really crazy once you start looking at these Heraclitus-type models. One can use science to show that science has limits. This is unlike any conversation I've had on this channel, and I've had hundreds of conversations with physicists, mathematicians, philosophers, etc. Professor J.B. Manchak is the only person that I know who connects general relativity to unknowability, to the self, to Zen Buddhism, to time travel. You're in for a treat. Einstein's theory is replete with models that permit time travel, have exposed points where space-time ends, and even violate determinism. This means it's technically false to say classical physics is deterministic. Most physicists dismiss these as pathological mathematical artifacts and move on. Professor J.B. Manchak of UC Irvine doesn't dismiss them. He proves theorems about them.