75 | Max Tegmark on Reality, Simulation, and the Multiverse

75 | Max Tegmark on Reality, Simulation, and the Multiverse

We've talked a lot recently about the Many Worlds of quantum mechanics. That's one kind of multiverse that physicists often contemplate. There is also the cosmological multiverse, which we talked about with Brian Greene. Today's guest, Max Tegmark, has thought a great deal about both of those ideas, as well as a more ambitious and speculative one: the Mathematical Multiverse, in which we imagine that every mathematical structure is real, and the universe we perceive is just one such mathematical structure. And there's yet another possibility, that what we experience as "reality" is just a simulation inside computers operated by some advanced civilization. Max has thought about all of these possibilities at a deep level, as his research has ranged from physical cosmology to foundations of quantum mechanics and now to applied artificial intelligence. Strap in and be ready for a wild ride.

Max Tegmark received his Ph.D. in physics from the University of California, Berkeley. He is currently professor of physics at the Massachusetts Institute of Technology. He has played an important role analyzing data from large-scale structure and the cosmic microwave background. He is the author of Our Mathematical Universe and Life 2.0: Being Human in the Age of Artificial Intelligence. He is a co-founder of the Foundational Questions Institute and the Future of Life Institute.


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305 | Lilliana Mason on Polarization and Political Psychology

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304 | James Evans on Innovation, Consolidation, and the Science of Science

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303 | AMA | February 2025

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303 | James P. Allison on Fighting Cancer with the Immune System

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27 Jan 20251h 7min

302 | Chris Kempes on the Biophysics of Evolution

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20 Jan 20251h 30min

301 | Tina Eliassi-Rad on Al, Networks, and Epistemic Instability

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300 | Solo: Does Time Exist?

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