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Sean Carroll

Ever wanted to know how music affects your brain, what quantum mechanics really is, or how black holes work? Do you wonder why you get emotional each time you see a certain movie, or how on earth video games are designed? Then you've come to the right place. Each week, Sean Carroll will host conversations with some of the most interesting thinkers in the world. From neuroscientists and engineers to authors and television producers, Sean and his guests talk about the biggest ideas in science, philosophy, culture and much more.

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

Welcome to the March 2026 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 Patreons, whittle them down to a more manageable number -- based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good -- and sometimes group them together if they are about a similar topic. Enjoy!
 
Get twenty percent off your first purchase at Fast Growing Trees when using the code MINDSCAPE at checkout! #sponsored
 
Blog post with questions and transcript: https://www.preposterousuniverse.com/podcast/2026/03/02/ama-march-2026/
 
Support Mindscape on Patreon.

AMA | March 2026

Behaving rationally involves facing up to conditions of uncertainty; we never navigate the world with perfect confidence. Sometimes we are uncertain about the way the world is, but we can also be uncertain about our place within the world. This kind of situation arises in cosmology (where the relevant world can extend very far in space or time), and also in quantum mechanics (where new worlds might be created at any measurement), but also when we are simply unsure about the future history of humanity or whether we live in a computer simulation. I talk with philosopher Adam Elga about how to deal with these unique kinds of uncertainties.
 
Upgrade your denim game with Rag & Bone! Get 20% off sitewide with code MINDSCAPE at www.rag-bone.com #ragandbonepod #sponsored
 
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/02/23/345-adam-elga-on-being-rational-in-a-very-large-universe/
 
Support Mindscape on Patreon.
 
Adam Elga received his Ph.D. in philosophy from MIT. He is currently a professor of philosophy at Princeton University. His research involves decision and game theory, epistemology, philosophy of probability, philosophy of mind, and philosophy of science.
 
 Web site Princeton web page Google Scholar publications PhilPeople profile

345 | Adam Elga on Being Rational in a Very Large Universe

It's possible to look at the course of history over the past few centuries and discern a movement toward increasing democracy, freedom, and individual rights -- "liberalism," in the political-philosophy sense of the term. But such movement isn't inevitable or irreversible, and in very recent times there have been both intellectual arguments explicitly pushing back against the liberal consensus, and political movements that are more openly nativist and authoritarian. I talk with Adam Gurri, the editor-in-chief of Liberal Currents, a web site that "publishes writers of diverse perspectives who share an unflinching commitment to freedom, pluralism, and democracy, in opposition to authoritarianism at home and around the world."
 
Go to https://surfshark.com/mindscape or use code MINDSCAPE at checkout to get 4 extra months of Surfshark VPN!
 
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/02/16/344-adam-gurri-on-liberal-democracy-and-how-to-fight-for-it/
 
Support Mindscape on Patreon.
 
Adam Gurri received an M.A. in Economics from George Mason University. He is the co-founder and Editor-in-Chief of Liberal Currents.
 
 Web site Liberal Currents Bluesky

344 | Adam Gurri on Liberal Democracy and How to Fight For It

For all that human beings spend a lot of their time thinking, it's far from obvious what that process actually entails. Part of it amounts to classical logical reasoning. But an even bigger part involves reasoning with probability and uncertainty. And some of it is governed by unavoidable limitations on time and accuracy. Psychologist and computer scientist Tom Griffiths suggests that we have thought about it enough to feel that we have come to understand some general principles, which he explains in his new book The Laws of Thought: The Quest for a Mathematical Theory of Mind.
 
Take your personal data back with Incogni! Use code MINDSCAPE at this link and get 60% off an annual plan: https://incogni.com/mindscape #sponsore
 
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/02/09/343-tom-griffiths-on-the-laws-of-thought/
 
Support Mindscape on Patreon.
 
Tom Griffiths received his Ph.D. in psychology from Stanford University. He is currently Professor of Psychology and Computer Science at Princeton University, Director of the Computational Cognitive Science Lab, and Director of the Princeton Laboratory for Artificial Intelligence. He is the co-author of Algorithms to Live By: The Computer Science of Human Decisions, as well as the upcoming The Rational Use of Cognitive Resources.
 
 Web site Princeton web page Google Scholar publications Wikipedia

343 | Tom Griffiths on The Laws of Thought

Welcome to the February 2026 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 Patreons, whittle them down to a more manageable number -- based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good -- and sometimes group them together if they are about a similar topic. Enjoy!
 
Blog post with AMA questions and transcript: https://www.preposterousuniverse.com/podcast/2026/02/02/ama-february-2026/
 
Note that Mindscape now has a new hosting provider, Libsyn. (Actually a return home, as that was my first host when Mindscape was launched.) Things seem to be going smoothly, but let us know if there are any technical glitches.
 
Support Mindscape on Patreon.

AMA | Feb 2026

Evolution with natural selection involves an intricate mix of the random and the driven. Mutations are essentially random, while selection pressures work to prefer certain outcomes over others. There is tremendous divergence of species over time, but also repeated convergence to forms and mechanisms that are unmistakably useful. We see this clearly in eyes and fins, but the basic pattern also holds for brains and forms of social organization. I talk with philosopher Rachell Powell about what these ideas mean for humans, other terrestrial species, and also for forms of life we have not yet encountered.
 
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/01/26/342-rachell-powell-on-evolutionary-convergence-morality-and-mind/
 
Support Mindscape on Patreon.
 
Rachell Powell received her Ph.D. in philosophy from Duke University. She is currently a Professor of Philosophy at Boston University. She has held fellowships at the National Humanities Center, the American Council of Learned Societies, the Konrad Lorenz Institute for Evolution and Cognition Research, the National Evolutionary Synthesis Center, the Berlin School of Mind and Brain at Humboldt University, and the Center for Genetic Engineering and Society at North Carolina State University.
 
 Boston University web page PhilPapers publications

342 | Rachell Powell on Evolutionary Convergence, Morality, and Mind

"Things fall apart; the centre cannot hold," wrote W.B. Yeats. I don't know about the centre, but the tendency of things to fall apart is pretty universal, ultimately due to the Second Law of Thermodynamics. Anyone living in a society or involved with technology must therefore be interested in the concept of maintenance -- keeping systems working. In his book Maintenance: Of Everything, Part One, Stewart Brand looks at the challenges and rewards of this concept.
 
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/01/19/341-stewart-brand-on-maintenance-as-an-organizing-principle/
 
Support Mindscape on Patreon.
 
Stewart Brand received an undergraduate degree in biology from Stanford University. He was the founder, editor, and publisher of the Whole Earth Catalog, which won a National Book Award. He founded the journal CoEvolution Quarterly and the WELL electronic community, and was a co-founder of the Long Now Foundation. He has been called "the 20th century's top influencer."
 
 Web site Amazon author page Wikipedia

341 | Stewart Brand on Maintenance as an Organizing Principle

At any given moment, an uncountable number of events are happening, but only some of them matter to us. What does it mean for something to matter, and more importantly, what does it mean for us to matter -- to ourselves as well as to others? The need to matter can be motivation to do great things, but it can also be a reason for people to come into conflict. Philosopher/novelist Rebecca Newberger Goldstein explores this issue in her new book The Mattering Instinct: How Our Deepest Longing Drives Us and Divides Us.
 
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/01/12/340-rebecca-newberger-goldstein-on-what-matters-and-why-it-matters/
 
Support Mindscape on Patreon.
 
Rebecca Newberger Goldstein received her Ph.D. in philosophy from Princeton University. She is the author of several novels and works of non-fiction. Among her awards are the MacArthur and Guggenheim Fellowships, membership in the American Academy of Arts and Sciences, and the National Humanities Medal.
 
 Web site Amazon author page Wikipedia

340 | Rebecca Newberger Goldstein on What Matters and Why It Matters

It's become increasingly clear that the Turing Test -- determining whether human interlocutors can tell whether a conversation is being carried out by a human or a machine -- is not a good way to think about consciousness. Modern LLMs can mimic human conversation with extraordinary verisimilitude, but most people would not judge them to be conscious. What would it take? Is it even possible for a computer program to achieve consciousness, or must consciousness be fundamentally "meat-based"? Philosopher Ned Block has long argued that consciousness involves something more than simply the "functional" aspects of inputs and outputs.
 
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/01/05/339-ned-block-on-whether-consciousness-requires-biology/
 
Support Mindscape on Patreon.
 
Ned Block received his Ph.D. in philosophy from Harvard University. He is currently Silver Professor in the Department of Philosophy at New York University, with secondary appointments in Psychology and Neural Science. He is also co-director of the Center for Mind, Brain, and Consciousness. He is Past President of the Society for Philosophy and Psychology and was elected a Fellow of the American Academy of Arts & Sciences.
 
 Web site NYU web page PhilPeople profile Google Scholar publications Wikipedia

339 | Ned Block on Whether Consciousness Requires Biology

Time for the holiday message! Rounding off the year with a brief and casual reflection on some issue that doesn't quite rise to the level of a full solo podcast. And hopefully something uplifting.
 
This year, I offer a short apologia for higher education in the liberal arts and sciences, focusing not on the down-to-earth economic/occupational benefits of a college degree, but on the very real ways in which such an education opens up possibilities for personal growth. I think all of us in academia should be loud and unapologetic about the more romantic, idealistic values of the modern university.
 
Happy holidays all!
 
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2025/12/22/holiday-message-2025-the-romance-of-the-university/
 
Support Mindscape on Patreon.

341 | Stewart Brand on Maintenance as an Organizing Principle

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