Lee Smolin: Quantum Gravity and Einstein's Unfinished Revolution | Lex Fridman Podcast #79

Lee Smolin articulates a scientific realist framework where time is fundamental and space emerges from causal networks, offering a critique of quantum mechanics and string theory for prioritizing mathematical elegance over empirical testability. He advocates for his alternative theory of Loop Quantum Gravity and the concept of Cosmological Natural Selection to resolve the contradictions in reconciling gravity with quantum principles while rejecting the many-worlds interpretation. Looking toward the future of physics, Smolin urges the community to integrate causality as a primary construct and foster cross-pollination among rival camps to achieve a breakthrough beyond current methodological stagnation.