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

"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/
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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."
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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/
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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.
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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/
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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.
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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/
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Welcome to the December 2025 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.
Blog post with transcript: https://www.preposterousuniverse.com/podcast/2025/12/15/ama-december-2025/
In the intro I give a plug for the Pods Fight Poverty effort organized by GiveDirectly. Please consider making a donation to help families in Rwanda!
Enjoy!
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