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Sara Walker

What Sara Walker thinks about physics

@sara-walker · 22 positions · On ppll ↗

Astrobiologist and theoretical physicist at Arizona State University, working on assembly theory and the physics of life.

Sara Walker did not write this page.

We collected these quotes from things they published elsewhere, and every quote links to where it was said. They have no account here and have not endorsed this site. Quotes are word for word; the short line under each one is our own restatement, not their wording. Their own site. Is this you? Claim it or ask us to remove it. Or tell us what is wrong here.

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Only Sara Walker on physics. See everyone on physics

4 dated positions, 2024, in their own words. Our reading of what Sara Walker has said — not written or endorsed by them.

4 positions so far — this page is not yet offered to search engines.

  1. Our readingNon-equilibrium physics will not explain life, and entropy has almost nothing to do with it.

    Their wordsAnd there’s still a lot of impetus in the physics community to think that non-equilibrium physics will explain life. But I think that’s not the right approach. I don’t think ultimately the solution to what life is there, and I don’t really think entropy has much to do with it unless it’s entirely reformulated.

    ↗Sara Walker: Physics of Life, Time, Complexity, and Aliens | Lex Fridman Podcast #433youtube.com 9th of 22 in this recording

  3. Our readingTreating the universe as deterministic is an artifact of how laws have been written down since Newton, not a fact about the world.

    Their wordsPhysics hardly even acknowledges that the universe is random at its base. We like to think we live in a deterministic universe and everything’s deterministic. But I think that’s probably an artifact of the way that we’ve written down laws of physics since Newton invented modern physics and his conception of motion and gravity, which he formulated laws that had initial conditions and fixed dynamical laws.

    ↗Sara Walker: Physics of Life, Time, Complexity, and Aliens | Lex Fridman Podcast #433youtube.com 10th of 22 in this recording

  5. Our readingWhat physics calls fundamental is not fundamental at all — it is only the boundary of what our current technology can observe.

    Their wordsSo what’s fundamental, the way we talk about it in current physics is not actually fundamental, it’s the boundaries of what we can observe in our universe, what we can see with our technology.

    ↗Sara Walker: Physics of Life, Time, Complexity, and Aliens | Lex Fridman Podcast #433youtube.com 11th of 22 in this recording

  7. Our readingThe frontier of new physics is not high-energy particle physics or quantum gravity, but the problems of life and intelligence.

    energyTrauma

    Their wordsI think for me, the frontier in modern physics, where the new physics lies is not in high energy particle physics, it’s not in quantum gravity, it’s not in any of these sort of traditionally sold, “This is going to be the newest deepest insight we have into the nature of reality.” It is going to be in studying the problems of life and intelligence and the things that are sort of also our current existential crises as a civilization or a culture that’s going through an existential trauma of inventing technologies that we don’t understand right now.

    ↗Sara Walker: Physics of Life, Time, Complexity, and Aliens | Lex Fridman Podcast #433youtube.com 12th of 22 in this recording