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Lex Fridman Podcast #428 · April 22, 2024 · 2h 44m
General Relativity, Quantum Mechanics, Black Holes & Aliens
Theoretical physicist Sean Carroll on the deepest questions in physics — why general relativity and quantum mechanics are incompatible, what black holes reveal about spacetime, and whether the universe is fundamentally deterministic or random.
This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.
Highlights
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The biggest unsolved problem in physics: reconciling gravity with quantum mechanics
Carroll: general relativity (gravity) and quantum mechanics (everything else) are both spectacularly successful theories that are fundamentally incompatible. Unifying them would require a revolution in our understanding of spacetime itself.Was this useful?