167 | Chiara Marletto on Constructor Theory, Physics, and Possibility

167 | Chiara Marletto on Constructor Theory, Physics, and Possibility

Traditional physics works within the "Laplacian paradigm": you give me the state of the universe (or some closed system), some equations of motion, then I use those equations to evolve the system through time. Constructor theory proposes an alternative paradigm: to think of physical systems in terms of counterfactuals — the set of rules governing what can and cannot happen. Originally proposed by David Deutsch, constructor theory has been developed by today's guest, Chiara Marletto, and others. It might shed new light on quantum gravity and fundamental physics, as well as having applications to higher-level processes of thermodynamics and biology.

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Chiara Marletto received her DPhil in physics from the University of Oxford. She is currently a research fellow at Wolfson College, University of Oxford. Her new book is The Science of Can and Can't: A Physicist's Journey Through the Land of Counterfactuals.


Avsnitt(417)

298 | Jeff Lichtman on the Wiring Diagram of the Brain

298 | Jeff Lichtman on the Wiring Diagram of the Brain

The number of neurons in the human brain is comparable to the number of stars in the Milky Way galaxy. Unlike the stars, however, in the case of neurons the real action is in how they are directly con...

9 Dec 20241h 9min

AMA | December 2024

AMA | December 2024

Welcome to the December 2024 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Pa...

2 Dec 20243h 55min

297 | Emily Wilson on Homer, Poetry, and Translation

297 | Emily Wilson on Homer, Poetry, and Translation

Not too long ago, Brad Pitt and Eric Bana starred in a (loose) adaptation of Homer's epic poem The Iliad; next month, Ralph Fiennes and Juliette Binoche will headline a film based on The Odyssey. Give...

25 Nov 20241h 15min

296 | Brandon Ogbunu on Fitness Seascapes and the Course of Evolution

296 | Brandon Ogbunu on Fitness Seascapes and the Course of Evolution

Biological evolution via natural selection is a simple idea that becomes enormously complicated in its realization. Populations of organisms are driven toward increased "fitness," a measure of how suc...

18 Nov 20241h 15min

295 | Solo: Emergence and Layers of Reality

295 | Solo: Emergence and Layers of Reality

Emergence is a centrally important concept in science and philosophy. Indeed, the existence of higher-level emergent properties helps render the world intelligible to us -- we can sensibly understand ...

11 Nov 20241h 35min

AMA | November 2024

AMA | November 2024

Welcome to the November 2024 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Pa...

4 Nov 20243h 50min

294 | Addy Pross on Dynamics, Stability, and Life

294 | Addy Pross on Dynamics, Stability, and Life

Erwin Schrödinger said that the important characteristic of life is that it "goes on doing something... for a much longer period than we would expect an inanimate piece of matter to keep going under s...

28 Okt 20241h 11min

293 | Doyne Farmer on Chaos, Crashes, and Economic Complexity

293 | Doyne Farmer on Chaos, Crashes, and Economic Complexity

A large economy is one of the best examples we have of complex dynamics. There are multiple components arranged in complicated overlapping hierarchies, out-of-equilibrium dynamics, nonlinear coupling ...

21 Okt 20241h 11min

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