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Welcome to the June 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/2026/06/01/ama-june-2026/ New paper I talk about in the beginning of the episode: S.M. Carroll, N. Diachenko, and S. Dulani, "Toward a Phenomenologically Acceptable Quantum Cyclic Universe."

One of the major obstacles to understanding quantum mechanics is the difficulty we have in simply accepting what the theory itself is telling us. The problem is that we know what the everyday world looks like -- stuff, arranged in space, evolving through time. So we can't resist the temptation to impose that picture on the quantum description, even if it's not actually there. In this solo episode I talk about what it means to take quantum mechanics at face value, and the difficult work involved in understanding how the everyday world of our experience fits into the picture. Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/05/25/355-solo-looking-quantum-mechanics-in-the-eyeball/ Support Mindscape on Patreon. Here is the survey on physicists' opinions about unsettled big-picture questions: Afshordi, Halper, Rini, and Schirber, "Big Mysteries Survey: Physicists' Views on Cosmology, Black Holes, Quantum Mechanics, and Quantum Gravity." And here is a short technical overview on the ideas described in this episode: Carroll, "Reality as a Vector in Hilbert Space." If you want further papers, look at the papers cited in this one.

Did I have any freedom in choosing this particular podcast guest? At the level of particles, fields, and the fundamental laws of physics; no. At the level of human agents navigating the world, yes. Today's guest, Christian List, is a philosopher and political scientist who has arguably done the most to articulate the "compatibilist" perspective on free will, according to which the freedom of rational agents is entirely compatible with underlying mechanistic laws. The reconciliation depends on thinking carefully about emergence and the relationship between levels of reality. Take your personal data back with Incogni! Use code MINDSCAPE at this link and get 60% off an annual plan: https://incogni.com/mindscape #sponsored Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/05/18/354-christian-list-on-free-will-and-levels-of-reality/ Support Mindscape on Patreon. Christian List received his D.Phil in Politics from Oxford University. He is currently Professor of Philosophy and Decision Theory and Co-Director of the Munich Center for Mathematical Philosophy at LMU Munich. He is a Fellow of the British Academy and a member of Academia Europaea the Bavarian Academy of Sciences and Humanities. Among his honors are the Joseph Gittler Award from the American Philosophical Association. He is the author of Why Free Will Is Real and (with Philip Pettit) Group Agency. Web site LMU web page Google Scholar publications Amazon author page Wikipedia

Economic markets are efficient ways of deciding fair prices, at least in ideal circumstances of perfect competition, information, and choice. But there is more to life than fair prices. Two people might decide on a fair price to carry out a contract killing, but society generally frowns on the idea. Many examples of morally contestable markets feature less consensus than that one: sex work, drugs, selling organs, adopting children. In his new book Moral Economics, economist Alvin Roth investigates how we should reason through such tricky cases, and what we can learn from them. Get twenty percent off your first purchase at Fast Growing Trees when using the code MINDSCAPE at checkout. Mindscape listeners get free shipping and 365-day returns on clothing from Quince. Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/05/11/353-alvin-roth-on-the-economics-of-morally-contested-markets/ Support Mindscape on Patreon. Alvin Roth received his Ph.D. in operations research from Stanford University. He is currently the Craig and Susan McCaw Professor of Economics at Stanford University and the Gund Professor of Economics and Business Administration Emeritus at Harvard. He was President of the American Economic Association in 2017. He and Lloyd Shapley shared the 2012 Nobel Prize in Economics for "the theory of stable allocations and the practice of market design." Stanford web page Google Scholar publications Amazon author page Wikipedia

Welcome to the May 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 full transcript: https://www.preposterousuniverse.com/podcast/2026/05/04/ama-may-2026/ Henson Shaving is offering 100 blades free with the purchase of a razor — just head to hensonshaving.com/MINDSCAPE and or use code MINDSCAPE at checkout. #sponsored Take your personal data back with Incogni! Use code MINDSCAPE at this link and get 60% off an annual plan: https://incogni.com/mindscape #sponsored

The connectome is the wiring diagram of a brain, a big matrix that tells us what neurons talk to what other neurons. Understanding it is an important step to understanding how brains work, but a long way from the final answer. A big next step is understanding how neuronal circuits connect to and guide bodily behavior. Very recent work on mapping the fruit-fly connectome has brought us closer to that goal. I talk with neuroscientist Bing Brunton about the connectome, how we can study it to understand bodily motion in flies and other creatures, and where it's all taking us. Chubbies is here to keep you comfy and looking good year-round. Get 20% off with code MINDSCAPE at chubbiesshorts.com/MINDSCAPE! #chubbiespod Upgrade your denim game with Rag & Bone! Get 20% off sitewide with code MINDSCAPE at www.rag-bone.com. #ragandbonepod Support Mindscape on Patreon. Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/04/27/352-bing-brunton-on-connecting-the-connectome-to-the-body/ Bing Wen Brunton received her Ph.D. in neuroscience from Princeton University.. She is currently a Professor of Biology and the Richard & Joan Komen University Chair at the University of Washington, with affiliations at the eScience Institute for Data Science, the Paul G. Allen School of Computer Science & Engineering, and the Department of Applied Mathematics. Web site University of Washington web page Google Scholar publications YouTube channel Bluesky Artworks (Instagram)

Peter Singer has been an influential philosopher for a number of decades. He was a significant early voice in animal rights, has been a leading thinker of utilitarianism, and helped inspire the effective altruism movement. In this podcast episode, we try our best to talk about all of those things -- working from metaethical questions of consequentialism vs. other approaches, to specific flavors of utilitarianism, the practical demands that ethics places on people, the rights of animals, and the decisions we make at the end of our lives. Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/04/20/351-peter-singer-on-maximizing-good-for-all-sentient-creatures/ Support Mindscape on Patreon. Peter Singer received his B.Phil. in philosophy from the University of Oxford. He retired from Princeton University in 2023, and now lives in Melbourne, Australia. He is the author of a number of influential books, including Animal Liberation (1975). He has been named a Companion of the order of Australia, and is a winner of the Berggruen Prize. He is the founder of the charity The Life You Can Save. He and philosopher Kasia de Lazari Radek are co-hosts of the Lives Well Lived podcast (YouTube, Spotify, Apple). Web site Princeton University Center for Human Values page Google Scholar publications Amazon author page Wikipedia Bluesky

We are more familiar with ourselves than with anything else in the universe, but we generally don't come very close to really understanding what our "self" is. That's not too surprising, as selves are very complicated and we are burdened by all sorts of biases. Today's guest is J. Eric Oliver, who has been teaching a popular course at the University of Chicago called "The Intelligible Self." His academic specialty is political science, but he brings together ideas from psychology, neuroscience, and a broad swath of the humanities. His view is summarized in his recent book, How to Know Yourself: The Art and Science of Discovering Who You Really Are. Take your personal data back with Incogni! Use code MINDSCAPE at this link and get 60% off an annual plan: https://incogni.com/mindscape #sponsored Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/04/13/350-j-eric-oliver-on-the-self-and-how-to-know-it/ Support Mindscape on Patreon. J. Eric Oliver received his Ph.D. in political science from the University of California, Berkeley. He is currently a Professor of Political Science at the University of Chicago. His research interests include contemporary American politics, suburban and racial politics, political psychology, and the politics of science. He is the host of the podcast Knowing: With Eric Oliver. Web site U Chicago web page Google Scholar publications Amazon author page

Welcome to the April 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! Henson Shaving is offering 100 blades free with the purchase of a razor — just head to hensonshaving.com/MINDSCAPE and or use code MINDSCAPE at checkout. Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/04/06/ama-april-2026/ Support Mindscape on Patreon.

There is something special about gravity. After decades of effort, there is still no convergence on the right way to reconcile Einstein's theory of general relativity with the framework of quantum mechanics. But a number of intriguing ideas have arisen along the way, including black hole radiation, the wave function of the universe, the AdS/CFT correspondence, and the role of quantum information theory. Theoretical physicist Daniel Harlow has made significant contributions to our understanding of information loss in black holes; in this conversation we turn those insights onto quantum cosmology, with potentially significant implications for how quantum mechanics itself works. Blog post with transcript: https://www.preposterousuniverse.com/podcast/2026/03/30/349-daniel-harlow-on-what-quantum-gravity-teaches-us-about-quantum-mechanics/ Support Mindscape on Patreon. Daniel Harlow received his Ph.D. in physics from Stanford University. He is currently an associate professor of physics at the Massachusetts Institute of Technology. Among his awards are a Packard Fellowship and the New Horizons in Physics Prize. Web site MIT web page Google Scholar publications Wikipedia