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    Explore "science" with insightful episodes like "AMA | September 2023", "248 | Yejin Choi on AI and Common Sense", "246 | David Stuart on Time and Science in Maya Civilization", "AMA | August 2023" and "245 | Solo: The Crisis in Physics" from podcasts like ""Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas", "Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas", "Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas", "Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas" and "Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas"" and more!

    Episodes (100)

    AMA | September 2023

    AMA | September 2023

    Welcome to the September 2023 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 questions and transcript: https://www.preposterousuniverse.com/podcast/2023/09/04/ama-september-2023/

    And you can now pre-order The Biggest Ideas in the Universe Vol. 2: Quanta and Fields!

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    248 | Yejin Choi on AI and Common Sense

    248 | Yejin Choi on AI and Common Sense

    Over the last year, AI large-language models (LLMs) like ChatGPT have demonstrated a remarkable ability to carry on human-like conversations in a variety of different concepts. But the way these LLMs "learn" is very different from how human beings learn, and the same can be said for how they "reason." It's reasonable to ask, do these AI programs really understand the world they are talking about? Do they possess a common-sense picture of reality, or can they just string together words in convincing ways without any underlying understanding? Computer scientist Yejin Choi is a leader in trying to understand the sense in which AIs are actually intelligent, and why in some ways they're still shockingly stupid.

    Blog post with transcript: https://www.preposterousuniverse.com/podcast/2023/08/28/248-yejin-choi-on-ai-and-common-sense/

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    Yejin Choi received a Ph.D. in computer science from Cornell University. She is currently the Wissner-Slivka Professor at the Paul G. Allen School of Computer Science & Engineering at the University of Washington and also a senior research director at AI2 overseeing the project Mosaic. Among her awards are a MacArthur fellowship and a fellow of the Association for Computational Linguistics.


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    246 | David Stuart on Time and Science in Maya Civilization

    246 | David Stuart on Time and Science in Maya Civilization

    You might remember the somewhat bizarre worries that swept through certain circles back in 2012, based on the end of the world being predicted by the Maya calendar. The world didn't end, which is unsurprising because the Maya hadn't predicted that, and for that matter they had no way of doing so. But there is very interesting archeology behind our understanding of how the Maya developed their calendar, as well as other aspects of their language and scientific understanding. Mayanist David Stuart takes us on a tour of what we know and what we're still discovering.

    Blog post with transcript: https://www.preposterousuniverse.com/podcast/2023/08/14/246-david-stuart-on-time-and-science-in-maya-civilization/

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    David Stuart received his Ph.D. in anthropology from Vanderbilt University. He is currently professor of Art History and Director of the Mesoamerica Center at the University of Texas, Austin. He is the youngest-ever recipient of the MacArthur Fellowship. Among his books is The Order of Days: Unlocking the Secrets of the Ancient Maya.


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    AMA | August 2023

    AMA | August 2023

    Welcome to the August 2023 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 questions and transcript: https://www.preposterousuniverse.com/podcast/2023/08/07/ama-august-2023/

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    245 | Solo: The Crisis in Physics

    245 | Solo: The Crisis in Physics

    Physics is in crisis, what else is new? That's what we hear in certain corners, anyway, usually pointed at "fundamental" physics of particles and fields. (Condensed matter and biophysics etc. are just fine.) In this solo podcast I ruminate on the unusual situation fundamental physics finds itself in, where we have a theoretical understanding that fits almost all the data, but which nobody believes to be the final answer. I talk about how we got here, and argue that it's not really a "crisis" in any real sense. But there are ways I think the academic community could handle the problem better, especially by making more space for respectable but minority approaches to deep puzzles.

    Blog post with transcript: https://www.preposterousuniverse.com/podcast/2023/07/31/245-solo-the-crisis-in-physics/

    Support Mindscape on Patreon: https://www.patreon.com/seanmcarroll

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    243 | Joseph Silk on Science on the Moon

    243 | Joseph Silk on Science on the Moon

    The Earth's atmosphere is good for some things, like providing something to breathe. But it does get in the way of astronomers, who have been successful at launching orbiting telescopes into space. But gravity and the ground are also useful for certain things, like walking around. The Moon, fortunately, provides gravity and a solid surface without any complications of a thick atmosphere -- perfect for astronomical instruments. Building telescopes and other kinds of scientific instruments on the Moon is an expensive and risky endeavor, but the time may have finally arrived. I talk with astrophysicist Joseph Silk about the case for doing astronomy from the Moon, and what special challenges and opportunities are involved.

    Blog post with transcript: https://www.preposterousuniverse.com/podcast/2023/07/17/243-joseph-silk-on-science-on-the-moon/

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    Joseph Silk received his Ph.D. in Astronomy from Harvard University. After serving on the faculty at UC Berkeley and Oxford, he is currently Professor of Physics at the Institut d'astrophysique de Paris, Université Pierre et Marie Curie, and Homewood Professor of Physics and Astronomy at Johns Hopkins University. He is a Fellow of the Royal Society, the National Academy of Sciences, the American Astronomical Society, and the American Academy of Arts and Sciences. Among his awards are the Balzan Prize, the Henry Norris Russell Lectureship, and the Gruber Prize in cosmology. His new book is Back to the Moon: The Next Giant Leap for Humankind.

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    242 | David Krakauer on Complexity, Agency, and Information

    242 | David Krakauer on Complexity, Agency, and Information

    Complexity scientists have been able to make an impressive amount of progress despite the fact that there is not universal agreement about what "complexity" actually is. We know it when we see it, perhaps, but there are a number of aspects to the phenomenon, and different researchers will naturally focus on their favorites. Today's guest, David Krakauer, is president of the Santa Fe Institute and a longtime researcher in complexity. He points the finger at the concept of agency. A ball rolling down a hill just mindlessly obeys equations of motion, but a complex system gathers information and uses it to adapt. We talk about what that means and how to think about the current state of complexity science.

    Blog post with transcript: https://www.preposterousuniverse.com/podcast/2023/07/10/242-david-krakauer-on-complexity-agency-and-information/

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    David Krakauer received his D.Phil. in evolutionary biology from Oxford University. He is currently President and William H. Miller Professor of Complex Systems at the Santa Fe Institute. Previously he was at the University of Wisconsin, Madison, where he was the founding director of the Wisconsin Institute for Discovery and the Co-director of the Center for Complexity and Collective Computation. He was included in Wired magazine's list of "50 People Who Will Change the World."


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    AMA | July 2023

    AMA | July 2023

    Welcome to the July 2023 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.

    We're experimenting with a new benefit for Patreon supporters: short video (or audio-only) reflections by me on the podcast that just happened. If you've been wondering whether to join up, this could be the time.

    Blog post with questions and transcript: https://www.preposterousuniverse.com/podcast/2023/07/03/ama-july-2023/

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    241 | Tim Maudlin on Locality, Hidden Variables, and Quantum Foundations

    241 | Tim Maudlin on Locality, Hidden Variables, and Quantum Foundations

    Last year's Nobel Prize for experimental tests of Bell's Theorem was the first Nobel in the foundations of quantum mechanics since Max Born in 1954. Quantum foundations is enjoying a bit of a resurgence, inspired in part by improving quantum technology but also by a realization that understanding quantum mechanics might help with other problems in physics (and be important in its own right). Tim Maudlin is a leading philosopher of physics and also a skeptic of the Everett interpretation. We discuss the logic behind hidden-variable approaches such as Bohmian mechanics, and also the broader question of the importance of the foundations of physics.

    Support Mindscape on Patreon.

    Blog post with transcript: https://www.preposterousuniverse.com/podcast/2023/06/26/241-tim-maudlin-on-locality-hidden-variables-and-quantum-foundations/

    Tim Maudlin received his Ph.D. in philosophy from the University of Pittsburgh. He is currently a professor of philosophy at New York University. He is a member of the Academie Internationale de Philosophie des Sciences and the Foundational Questions Institute (FQXi). He has been a Guggenheim Fellow. He is the founder and director of the John Bell Institute for the Foundations of Physics in Croatia.


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    AMA | June 2023

    AMA | June 2023

    Welcome to the June 2023 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!

    Post with questions and full transcript: https://www.preposterousuniverse.com/podcast/2023/06/05/ama-june-2023/

    Support Mindscape on Patreon.

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    238 | Scott Shapiro on the Technology and Philosophy of Hacking

    238 | Scott Shapiro on the Technology and Philosophy of Hacking

    Modern computers are somewhat more secure against being hacked - either by an inanimate virus or a human interloper - than they used to be. But as our lives are increasingly intertwined with computers, the dangers that hacking poses are enormously greater. Why don't we just build unhackable computers? Scott Shapiro, who is a law professor and philosopher, explains why that's essentially impossible. On a philosophical level, computers rely on an essential equivalence between "data" and "code," which is vulnerable to exploitation. And on a psychological level, human beings will always be the weakest link in the chain of security.

    Web page with transcript: https://www.preposterousuniverse.com/podcast/2023/05/29/238-scott-shapiro-on-the-technology-and-philosophy-of-hacking/

    Support Mindscape on Patreon.

    Scott Shapiro received a J.D. from Yale Law School and a Ph.D. in philosophy from Columbia. He is currently the Charles F Southmayd Prof of Law and Philosophy at Yale University. He is the Director of the Yale Center for Law and Philosophy and also Director of the Yale Cybersecurity Lab. He is the Co-Editor of Legal Theory, and Co-Editor for philosophy of Law at the Stanford Encyclopedia of Philosophy. His new book is Fancy Bear Goes Phishing: The Dark History of the Information Age, in Five Extraordinary Hacks.


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    236 | Thomas Hertog on Quantum Cosmology and Hawking's Final Theory

    236 | Thomas Hertog on Quantum Cosmology and Hawking's Final Theory

    Is there a multiverse, and if so, how should we think of ourselves within it? In many modern cosmological models, the universe includes more than one realm, with possibly different laws of physics, and these realms may or may not include intelligent observers. There is a longstanding puzzle about how, in such a scenario, we should calculate what we, as presumably intelligent observers ourselves, should expect to see. Today's guest, Thomas Hertog, is a physicist and longstanding collaborator of Stephen Hawking. They worked together (often with James Hartle) to address these questions, and the work is still ongoing.

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    Thomas Hertog received his Ph.D. in physics from the University of Cambridge. He is currently a professor of theoretical physics at KU Leuven. His new book is On the Origin of Time: Stephen Hawking's Final Theory.


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    AMA | May 2023

    AMA | May 2023

    Welcome to the May 2023 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!

    Support Mindscape on Patreon.

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    235 | Andy Clark on the Extended and Predictive Mind

    235 | Andy Clark on the Extended and Predictive Mind

    What is the mind, and what does it try to do? An overly simplified materialist view might be that the mind emerges from physical processes in the brain. But you can be a materialist and still recognize that there is more to the mind than just the brain: the rest of our bodies play a role, and arguably we should count physical artifacts that contribute to our memory and cognition as part of "the mind." Or so argues today's guest, philosopher/cognitive scientist Andy Clark. As to what the mind does, it tries to predict what happens next. This simple idea provides a powerful lens through which to interpret all the different things our minds do, including the idea that "perception is controlled hallucination."

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    Andy Clark received his Ph.D. in philosophy from the University of Sussex. He is currently Professor of Cognitive Philosophy at Sussex. He was Director of the Philosophy/Neuroscience/Psychology Program at Washington University in St Louis, and Director of the Cogntive Science Program at Indiana University. His new book is The Experience Machine: How Our Minds Predict and Shape Reality.


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    234 | Tobias Warnecke on Cellular Structure and Evolution

    234 | Tobias Warnecke on Cellular Structure and Evolution

    Eukaryotic cells manage to pull off a number of remarkable feats. One is packing quite a long DNA molecule, with potentially billions of base pairs, into a tiny central nucleus. A key role is played by histones, proteins that provide scaffolding for DNA to wrap around. Histones also appear in archaea (one of the other domains of life), but until recently there wasn't evidence for them in bacteria (the final of the three domains). Todays guest, Tobias Warnecke, is an author on a recent paper that claims to provide such evidence. We discuss this new result, as well as background questions of how cells evolved and what their current structure can teach us about their histories.

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    Tobias Warnecke received his Ph.D. in biology from the University of Bath. He is currently a Programme Leader and MRC Investigator at the London Institute of Medical Sciences. He is a co-author on A. Hochner et al. (2023), "Histone-Organized Chromatin in Bacteria."


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    233 | Hugo Mercier on Reasoning and Skepticism

    233 | Hugo Mercier on Reasoning and Skepticism

    Here at the Mindscape Podcast, we are firmly pro-reason. But what does that mean, fundamentally and in practice? How did humanity come into the idea of not just doing things, but doing things for reasons? In this episode we talk with cognitive scientist Hugo Mercier about these issues. He is the co-author (with Dan Sperber) of The Enigma of Reason, about how the notion of reason came to be, and more recently author of Not Born Yesterday, about who we trust and what we believe. He argues that our main shortcoming is not being insufficiently skeptical of radical claims, but of being too skeptical of claims that don't fit our views.

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    Hugo Mercier received a Ph.D. in cognitive sciences from the École des Hautes Études en Sciences Sociales. He is currently a Permanent CNRS Research Scientist at the Institut Jean Nicod, Paris. Among his awards are the Prime d’excellence from the CNRS.


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    232 | Amy Finkelstein on Adverse Selection and Hidden Information

    232 | Amy Finkelstein on Adverse Selection and Hidden Information

    If you knew exactly when every person was going to die, or require medical care, you could make a killing buying and selling insurance. Nobody knows these things, of course -- the future is hard to predict -- but some people know something about the future that other people don't. This sets up adverse selection: the ability of one party to leverage information another party doesn't have, in order to gain an economic advantage. Economist Amy Finkelstein is an expert in this phenomenon, as well as the usefulness of empirical studies in economic research.

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    Amy Finkelstein received her Ph.D. in economics from the Massachusetts Institute of Technology. She is currently John & Jennie S. MacDonald Professor of Economics at MIT. She is the co-director and research associate of the Public Economics Program at the National Bureau of Economic Research, and the co-Scientific Director of J-PAL North America. Among her awards are a MacArthur Fellowship and the John Bates Clark Medal. Her recent book, with co-authors Liran Einav and Ray Fisman, is Risky Business: Why Insurance Markets Fail and What to Do About It.


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    Ask Me Anything | April 2023

    Ask Me Anything | April 2023

    Welcome to the April 2023 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!

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    230 | Raphaël Millière on How Artificial Intelligence Thinks

    230 | Raphaël Millière on How Artificial Intelligence Thinks

    Welcome to another episode of Sean Carroll's Mindscape. Today, we're joined by Raphaël Millière, a philosopher and cognitive scientist at Columbia University. We'll be exploring the fascinating topic of how artificial intelligence thinks and processes information. As AI becomes increasingly prevalent in our daily lives, it's important to understand the mechanisms behind its decision-making processes. What are the algorithms and models that underpin AI, and how do they differ from human thought processes? How do machines learn from data, and what are the limitations of this learning? These are just some of the questions we'll be exploring in this episode. Raphaël will be sharing insights from his work in cognitive science, and discussing the latest developments in this rapidly evolving field. So join us as we dive into the mind of artificial intelligence and explore how it thinks.

    [The above introduction was artificially generated by ChatGPT.]

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    Raphaël Millière received a DPhil in philosophy from the University of Oxford. He is currently a Presidential Scholar in Society and Neuroscience at the Center for Science and Society, and a Lecturer in the Philosophy Department at Columbia University. He also writes and organizes events aimed at a broader audience, including a recent workshop on The Challenge of Compositionality for Artificial Intelligence.


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    229 | Nita Farahany on Ethics, Law, and Neurotechnology

    229 | Nita Farahany on Ethics, Law, and Neurotechnology

    Every time our brain does some thinking, there are associated physical processes. In particular, electric currents and charged particles jump between neurons, creating associated electromagnetic fields. These fields can in principle be detected with proper technology, opening the possibility for reading your mind. That technology is currently primitive, but rapidly advancing, and it's not too early to start thinking about legal and ethical consequences when governments and corporations have access to your thoughts. Nita Farahany is a law professor and bioethicist who discusses these issues in her new book, The Battle for Your Brain: Defending the Right to Think Freely in the Age of Neurotechnology.

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    Nita Farahany received a J.D. and a Ph.D. in philosophy from Duke University. She is currently the Robinson O. Everett Distinguished Professor of Law & Philosophy at Duke, as well as Founding Director of the Duke Initiative for Science & Society. She has served on a number of government commissions, including the Presidential Commission for the Study of Bioethical Issues. She is a Fellow of the American Law Institute and of the American Association for the Advancement of Science, and was awarded the Duke Law School Distinguished Teaching Award.


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