1:48:15Exploring the Deep Mysteries of Physics | World Science Festival
Brian Greene sits down with Sean Carroll for one hour and forty eight minutes on the foundations of physics, with no audience and no agenda beyond seeing where it goes. They open on the question that organizes everything after it: the universe has reliable patterns, so what is making them, and both land on the answer that at some point it just is. From there they work through whether mathematics is invented or discovered, Godel and the integers, Borges and the alphabet as a compressed Library of Babel, why a deistic God explains nothing, free will as a level of description rather than an intervention, and whether large language models are conscious. The technical middle third is Greene asking Carroll to convince him of Many-Worlds and Carroll taking the shot, followed by his case that a quantum state in Hilbert space may be an exact and complete description of reality with space, time and gravity all emergent from it. It closes on complexity science, why every mammal gets about one and a half billion heartbeats, and a Johns Hopkins postdoc who submitted a one page prompt at the start of a talk and had a finished LIGO paper an hour later.