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

The modern world is large and interconnected, and there are a lot of systems that might be important to how it functions but about which most people are barely aware. One of these is the offshore wealth management network, which wealthy individuals can use both legitimately (to invest and plan their money) and less legitimately (to avoid taxation or hide questionable practices generally). Brooke Harrington is a sociologist who has studied offshore wealth management, including by training to be one. In a recent paper, she and colleagues analyze networks of offshore wealth managers as a complex system, uncovering power-law behavior and interesting nation-dependent network structures. Web site with transcript: https://www.preposterousuniverse.com/podcast/2023/05/22/237-brooke-harrington-on-offshore-wealth-as-a-complex-system/ Support Mindscape on Patreon. Brooke Harrington received her Ph.D. in sociology from Harvard University. She is currently a professor of sociology at Dartmouth College. Among her awards are the IPM Outstanding Book Award from the American Sociological Association. She is the author of Capital Without Borders: Wealth Management and the One Percent. Web site Dartmouth web page Google Scholar publications Amazon author page Wikipedia Twitter

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. Support Mindscape on Patreon. 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. KU Leuven web page Wikipedia Google Scholar publications

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.

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." Support Mindscape on Patreon. 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. Sussex web page Google Scholar publications Wikipedia New Yorker profile

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. Support Mindscape on Patreon. 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." Web page Lab web site Google Scholar publications Twitter

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. Support Mindscape on Patreon. 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. Web site Google Scholar publications Amazon author page Twitter

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. Support Mindscape on Patreon. 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. Web page Wikipedia Google Scholar publications

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!

Human beings are small compared to the universe, but we're very important to ourselves. Humanism can be thought of as the idea that human beings are themselves the source of meaningfulness and mattering in our lives, rather than those being granted to us by some higher power. In today's episode, Sarah Bakewell discusses the origin and evolution of this dramatic idea. Humanism turns out to be a complex thing; there are religious humanists and atheistic anti-humanists. Her new book is Humanly Possible: 700 Years of Humanist Freethinking, Inquiry, and Hope. Support Mindscape on Patreon. Sarah Bakewell did postgraduate work in philosophy and artificial intelligence before becoming a full-time author. Among her previous books are How to Live: a life of Montaigne, and At the Existentialist Cafe. She has been awarded the National Book Critics Circle award in biography, as well as the Windham-Campbell Prize in non-fiction. Web site Wikipedia Amazon author page Twitter

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.] Support Mindscape on Patreon. 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. Web site Columbia web page PhilPeople profile Google Scholar publications Twitter

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. Support Mindscape on Patreon. 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. Web site Duke web page Wikipedia Twitter

Welcome to the March 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!

God is dead, as Nietzsche's madman memorably reminded us. So what are we going to do about it? If there is no powerful force out there to guide us and give meaning to our lives, how are we supposed to live? Do we have to come up with meaning and purpose ourselves? Apparently so, and how to pull it off was a major question addressed by the existentialist movement. Skye Cleary turns to Simone de Beauvoir, in particular, for thoughts on how to construct an authentic life. Her recent book is How to Be Authentic: Simone de Beauvoir and the Quest for Fulfillment. Support Mindscape on Patreon. Skye Cleary received a Ph.D. and an MBA from Macquarie University. She is an author and philosopher and also teaches at Columbia University and the City College of New York. Her writing has appeared in The Paris Review, Aeon, The Times Literary Supplement, TED-Ed, and The Los Angeles Review of Books, among other outlets. She won the 2017 New Philosopher Writers' Award and was a 2021 MacDowell Fellow. Web site PhilPeople profile Amazon author page Twitter

Most of us strive to be good, moral people. When we are doing that striving, what is happening in our brains? Some of our moral inclinations seem pretty automatic and subconscious. Other times we have to sit down and deploy our full cognitive faculties to reason through a tricky moral dilemma. I talk with psychologist Molly Crockett about where our moral intuitions come from, how they can sometimes serve as cover for bad behaviors, and how morality shapes our self-image. Support Mindscape on Patreon. Molly J. Crockett received her Ph.D. in Experimental Psychology from the University of Cambridge. She is currently Associate Professor of Psychology and University Center for Human Values at Princeton University. She is a Fellow of the Association for Psychological Science and the Society for Experimental Social Psychology. Web site Princeton web page Google Scholar publications Wikipedia Twitter

Cities are incredibly important to modern life, and their importance is only growing. As Geoffrey West points out, the world is adding urban areas equivalent to the population of San Francisco once every four days. How those areas get designed and structured is a complicated interplay between top-down planning and the collective choices of millions of inhabitants. As the world is changing and urbanization increases, it will be crucial to imagine how cities might serve our needs even better. Johanna Hoffman is an urbanist who harnesses imagination to make cities more sustainable and equitable. Support Mindscape on Patreon. Johanna Hoffman received an MLA in landscape architecture and environmental planning from UC Berkeley. She is the co-founder and Director of Planning at urban futures firm Design for Adaptation. She has won fellowships from the European Futures Observatory and the Berggruen Institute, and served as Artist in Residence at the Buckminster Fuller Institute. Her new book is Speculative Futures: Design Approaches to Navigate Change, Foster Resilience, and Co-Create the Cities We Need. Web site Design for Adaptation Berggruen Fellow profile Amazon author page

Welcome to the February 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. The big news this month is the successful awarding of the first ever Mindscape Big Picture Scholarship. Congratulations to Lyat Melese and Rehman Hassan! We continue to collection donations for next year's scholarship contest.

Human beings have developed wondrous capacities to take in information about the world, mull it over, think about a suite of future implications, and decide on a course of action based on those deliberations. These abilities developed over evolutionary history for a variety of reasons and under a number of different pressures. But one crucially important aspect of their development is their social function. According to Michael Tomasello, we developed agency and cognition and even morality in order to better communicate and cooperate with our fellow humans. Support Mindscape on Patreon. Michael Tomasello received a Ph.D. in experimental psychology from the University of Georgia. He is currently the James Bonk Professor of Psychology & Neuroscience and Director of the Developmental Psychology Program at Duke University. He is a fellow of the National Academy of Sciences and the American Academy of Arts and Sciences. Among his awards are the Distinguished Scientific Contribution Award from the American Psychological Association, the Wiley Prize in Psychology, and the Heineken Prize for Cognitive Science. His newest book is The Evolution of Agency: Behavioral Organization from Lizards to Humans. Web site Duke web page Google Scholar publications Wikipedia Amazon author page

So you have some information — how are you going to share it with and present it to the rest of the world? There has been a long history of organizing and displaying information without putting too much thought into it, but Edward Tufte has done an enormous amount to change that. Beginning with The Visual Display of Quantitative Information, and continuing to his new book Seeing With Fresh Eyes: Meaning, Space, Data, Truth, Tufte's works have shaped how we think about charts, graphs, and other forms of presenting data. We talk about information, design, and how thinking about data reflects how we think about the world. Support Mindscape on Patreon. Edward Tufte received his Ph.D. in political science from Yale University. He has been a professor of public affairs at Princeton and of political science, statistics, and computer science at Yale, where he is currently emeritus professor. He is the founder and owner of Graphics Press, and his books have sold nearly 2 million copies worldwide. He is an active artist and sculptor, as well as a touring lecturer. Web site Yale web page Amazon.com author page Wikipedia Twitter

There are few human impulses more primal than the desire for explanations. We have expectations concerning what happens, and when what we experience differs from those expectations, we want to know the reason why. There are obvious philosophy questions here: What is an explanation? Do explanations bottom out, or go forever? But there are also psychology questions: What precisely is it that we seek when we demand an explanation? What makes us satisfied with one? Tania Lombrozo is a psychologist who is also conversant with the philosophical side of things. She offers some pretty convincing explanations for why we value explanation so highly. Support Mindscape on Patreon. Tania Lombrozo received her Ph.D. in psychology from Harvard University. She is currently a professor of psychology at Princeton. Among her awards are the Gittier Award from the American Psychological Foundation, an Early Investigator Award from the Society of Experimental Psychologists, and the Stanton Prize from the Society for Philosophy and Psychology. Web page Concepts and Cognition Lab Google Scholar publications Psychology Today articles Wikipedia Twitter

Quantum gravity research is inspired by experiment — all of the experimental data that supports quantum mechanics, and supports general relativity — but it's only inspiration, not detailed guidance. So it's easy to "do research on quantum gravity" and get lost in a world of toy models and mathematical abstraction. Today's guest, Andrew Strominger, is a leading researcher in string theory and quantum gravity, and one who has always kept his eyes on the prize: connecting to the real world. We talk about the development of string theory, the puzzle of a positive cosmological constant, and how black holes and string theory can teach us about each other. Support Mindscape on Patreon. Andrew Strominger received his Ph.D. in physics from the Massachusetts Institute of Technology. He is currently the Gwill E. York Professor of Physics at Harvard University. Among his awards are the Dirac Medal, the Klein Medal, the Breakthrough Prize in Fundamental Physics, and a Guggenheim Fellowship. Web page InSpire publications Wikipedia

One of the most powerful of all human capacities is the ability to imagine ourselves in hypothetical situations at different times. We can remember the past, but also conjure up possible futures that haven't yet happened. This simple ability underlies our capability to organize socially and make contracts with other people. Today's guest, psychologist Adam Bulley, argues that it's the primary feature that makes us recognizably human, as he argues in the new book The Invention of Tomorrow: A Natural History of Foresight (with Thomas Suddendorf and Jonathan Redshaw). Support Mindscape on Patreon. Adam Bulley received his Ph.D. in psychology from the University of Queensland. He is currently a postdoctoral fellow at the Brain and Mind Centre and School of Psychology, The University of Sydney, and the Department of Psychology at Harvard University. Web site Harvard web page Google Scholar publications Twitter

Welcome to that beloved Mindscape annual tradition, the Holiday Message. An opportunity for a quicker and less-well-thought-out solo episode to round off another year. Ironically, this year the theme is the importance of slowing down and thinking things out really well! Illustrated by two things that have been on my mind: a couple of internet/tech kerfuffles (Elon Musk buying Twitter, Sam Bankman-Fried and the collapse of FTX), and the distinction between foundations of physics and "regular" physics. See if you can dimly perceive the thread that ties them together.

Life is rich with moments of uncertainty, where we're not exactly sure what's going to happen next. We often find ourselves in situations where we have to choose between different kinds of uncertainty; maybe one option is very likely to have a "pretty good" outcome, while another has some probability for "great" and some for "truly awful." In such circumstances, what's the rational way to choose? Is it rational to go to great lengths to avoid choices where the worst outcome is very bad? Lara Buchak argues that it is, thereby expanding and generalizing the usual rules of rational choice in conditions of risk. Support Mindscape on Patreon. Lara Buchak received a Ph.D. in philosophy from Princeton University. She is currently a professor of philosophy at Princeton. Her research interests include decision theory, social choice theory, epistemology, ethics, and the philosophy of religion. She was the inaugural winner of the Alvin Plantinga Prize of the American Philosophical Association. Her book Risk and Rationality proposes a new way of dealing with risk in rational-choice theory. Web site Princeton web page PhilPeople profile Google Scholar publications

Welcome to the December 2022 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! Remember that I take a holiday break at the end of the year, so the next AMA will be at the beginning of February. Support Mindscape on Patreon.

It's easy enough to proclaim that we are curious creatures, but what does that really mean? What kinds of curiosity are there? And how does curiosity arise in our brains? Perry Zurn and Dani Bassett are a philosopher and neuroscientist, respectively (as well as twins), whose new book Curious Minds: The Power of Connection explores these questions through an interdisciplinary lens. We break down the different ways that curiosity can manifest — collecting and creating loose knowledge networks, digging deeply to create a tight knowledge network, and creatively leaping to make unexpected connections. Support Mindscape on Patreon. Perry Zurn received a Ph.D. in philosophy from DePaul University. He is currently an Associate Professor and Director of Undergraduate Studies in Philosophy in the Department of Philosophy and Religion at American University. He is the co-founder of the Trans Philosophy Project and the associated Thinking Trans // Trans Thinking Conference. Among his previous works is Curiosity and Power: The Politics of Inquiry. Web site American University web page Google Scholar publications PhilPeople profile Twitter Dani Bassett received a Ph.D. in physics from the University of Cambridge. They are currently the J. Peter Skirkanich Professor at the University of Pennsylvania, with appointments in the Departments of Bioengineering, Electrical & Systems Engineering, Physics & Astronomy, Neurology, and Psychiatry, as well as an external professor of the Santa Fe Institute. Among their awards are the Macarthur Fellowship, the Lagrange Prize in Complex Systems Science (2017), and the Erdos-Renyi Prize in Network Science. University of Pennsylvania web page Google Scholar publications Wikipedia Twitter

Stephen Hawking's discoveries of black hole radiation, entropy, and the information-loss problem have both taught us an enormous amount about the relationship between quantum mechanics and gravity, and also left us with some knotty puzzles. One major insight is the holographic principle: the information describing a black hole can be thought of as living on the event horizon (the two-dimensional boundary of the hole), rather than distributed throughout its volume, as normal physics would lead us to expect. Raphael Bousso has made important contributions to our understanding of holography and its implications. We talk about the modern point of view of how gravity relates to quantum mechanics. Support Mindscape on Patreon. Raphael Bousso received his Ph.D. in physics from Cambridge University, where his advisor was Stephen Hawking. He is currently a professor of physics at UC Berkeley. He has made pioneering contributions to our understanding of black hole information, the holographic principle, the string theory landscape, and multiverse cosmology. Web page Inspire publications Wikipedia Twitter

Why do people voluntarily hand over authority to a government? Under what conditions should they do so? These questions are both timeless and extremely timely, as modern democratic governments struggle with stability and legitimacy. They also bring questions from moral and political philosophy into conversations with empirically-minded social science. Margaret Levi is a leading political scientist who has focused on political economy and the nature of trust in government and other institutions. We talk about what democracy means, its current state, and how we can make it better. Support Mindscape on Patreon. Margaret Levi received her Ph.D. in political science from Harvard University. She is currently Professor of Political Science and Senior Fellow at the Center for Democracy, Development and Rule of Law at the Freeman Spogli Institute at Stanford University. She is also co-director of the Stanford Ethics, Society and Technology Hub, and the Jere L. Bacharach Professor Emerita of International Studies at the University of Washington. She is the winner of the 2019 Johan Skytte Prize and the 2020 Falling Walls Breakthrough. She is a member of the National Academy of Sciences, the British Academy, the American Academy of Arts and Sciences, the American Philosophical Society, and the American Association of Political and Social Sciences. She served as president of the American Political Science Association from 2004 to 2005. In 2014 she received the William H. Riker Prize in Political Science, in 2017 gave the Elinor Ostrom Memorial Lecture, and in 2018 received an honorary doctorate from Universidad Carlos III de Madrid. Web page Stanford web page Google Scholar publications Amazon author page Wikipedia Twitter

Welcome to the November 2022 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.

People have a complicated relationship to mathematics. We all use it in our everyday lives, from calculating a tip at a restaurant to estimating the probability of some future event. But many people find the subject intimidating, if not off-putting. John Allen Paulos has long been working to make mathematics more approachable and encourage people to become more numerate. We talk about how people think about math, what kinds of math they should know, and the role of stories and narrative to make math come alive. Support Mindscape on Patreon. John Allen Paulos received his Ph.D. in mathematics from the University of Wisconsin, Madison. He is currently a professor of mathematics at Temple University. He s a bestselling author, and frequent contributor to publications such as ABCNews.com, the Guardian, and Scientific American. Among his awards are the Science Communication award from the American Association for the Advancement of Science and the Mathematics Communication Award from the Joint Policy Board of Mathematics. His new book is Who's Counting? Uniting Numbers and Narratives with Stories from Pop Culture, Puzzles, Politics, and More. Web page Wikipedia Amazon author page Twitter

The founders of statistical mechanics in the 19th century faced an uphill battle to convince their fellow physicists that the laws of thermodynamics could be derived from the random motions of microscopic atoms. This insight turns out to be even more important than they realized: the emergence of patterns characterizing our macroscopic world relies crucially on the increase of entropy over time. Barry Loewer has (in collaboration with David Albert) been developing a theory of the Mentaculus — the probability map of the world — that connects microscopic physics to time, causation, and other familiar features of our experience. Support Mindscape on Patreon. Barry Loewer received his Ph.D. in philosophy from Stanford University. He is currently distinguished professor of philosophy at Rutgers University. His research focuses on the foundations of physics and the metaphysics of laws and chance. Web page PhilPeople profile Google Scholar publications Wikipedia Amazon author page

It's a big universe we live in, so it comes as no surprise that big numbers are needed to describe it. There are roughly 10^22 stars in the observable universe, and about 10^88 particles altogether. But these numbers are nothing compared to some of the truly ginormous quantities that mathematicians have found to talk about, with inscrutable names like Graham's Number and TREE(3). Could such immense numbers have any meaningful relationship with the physical world? In his recent book Fantastic Numbers and Where to Find Them, theoretical physicist Antonio Padilla explores both our actual universe and the abstract world of immense numbers, and finds surprising connections between them. Support Mindscape on Patreon. Antonio (Tony) Padilla received his Ph.D. in physics from the University of Durham. He is currently a Royal Society Research Fellow in the School of Physics and Astronomy at the University of Nottingham. He is a frequent contributor to the YouTube series Sixty Symbols and Numberphile. Web page Nottingham staff page Google Scholar publications Amazon author page Twitter

Welcome to the October 2022 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.

With communication satellites, weather satellites, GPS, and much more, what happens in space is already important to our lives here on Earth. And the importance of space is only going to grow as we increase the presence of humans, whether in Earth orbit or beyond. So the questions of what laws govern activity in space, and how nations and institutions should practice good governance more generally, are becoming increasingly urgent. Timiebi Aganaba is an academic and space lawyer who has experience experience in a wide variety of context and countries. We talk about the current status of space law and how to guarantee good governance going forward. Support Mindscape on Patreon. Timiebi Aganaba received Ph.D. and LL.M. degrees from the Institute of Air and Space Law at McGill University. She is currently an assistant professor in the School for the Future of Innovation in Society at Arizona State University, with a courtesy appointment at the Sandra Day O'Connor College of Law. She is also an affiliate faculty with the Interplanetary Initiative and a senior global futures scientist with the Global Futures Lab at ASU. She served as Executive Director of the World Space Week Association, and currently serves on advisory boards for the UN Space Generation Advisory Council, the Board of World View Enterprises, and the SETI Institute. She was the recipient of a Space Leaders Award from the International Astronautical Federation and her doctorate received the George and Ann Robinson Award for advanced research capabilities. Web site ASU web page SpaceTV profile World Space Week

The detection of gravitational waves from inspiraling black holes by the LIGO and Virgo collaborations was rightly celebrated as a landmark achievement in physics and astronomy. But ultra-precise ground-based observatories aren't the only way to detect gravitational waves; we can also search for their imprints on the timing of signals from pulsars scattered throughout our galaxy. Chiara Mingarelli is a member of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) collaboration, which uses pulsar timing to study the universe using gravitational waves. Support Mindscape on Patreon. Chiara Mingarelli received her Ph.D. in physics from the University of Birmingham. She is currently an assistant professor of physics at the University of Connecticut and a research scientist at the Flatiron Institute Center for Computational Astrophysics. Her Ph.D. thesis was selected by Springer Nature as an Outstanding PhD thesis, and she was selected as a "Voice of the Future" by the Royal Astronomical Society. She regularly contributes to science communication, including Amy Poehler's Smart Girls and the Science Channel's "How the Universe Works." Web site Simons Foundation web page Google Scholar publications Wikipedia Twitter

My little pandemic-lockdown contribution to the world was a series of videos called The Biggest Ideas in the Universe. The idea was to explain physics in a pedagogical way, concentrating on established ideas rather than speculations, with the twist that I tried to include and explain any equations that seemed useful, even though no prior mathematical knowledge was presumed. I'm in the process of writing a series of three books inspired by those videos, and the first one is coming out now: The Biggest Ideas In The Universe: Space, Time, and Motion. For this solo episode I go through one of the highlights from the book: explaining the mathematical and physical basis of Einstein's equation of general relativity, relating mass and energy to the curvature of spacetime. Hope it works! Support Mindscape on Patreon.

What's the fastest way to get a human being around a racetrack, if we ignore all the rules of racing? How many pages would you have to read to absorb all of the government laws that apply to you? It's hard to imagine a better person to tackle these kinds of slightly-askew questions than Randall Munroe, creator of the xkcd webcomic. He collected some answers in his book What If?, and has released a sequel, What If? 2. We dive into how one goes about choosing the right questions and answering them, and how to make it funny along the way. Support Mindscape on Patreon. Randall Munroe received a degree in physics from Christopher Newport University, before working for a while at NASA's Langley Research Center. He is now the creator of xkcd and the author of several books. What If? and What If? 2 are based on a regular feature in which he tackles questions asked by readers. Web site Amazon author page Explain xkcd Wikipedia Twitter

People throughout history have imagined ideal societies of various sorts. As the twentieth century dawned, advances in manufacturing and communication arguably brought the idea of utopia within our practical reach, at least as far as economic necessities are concerned. But we failed to achieve it, to say the least. Brad DeLong's new book, Slouching Towards Utopia: An Economic History of the Twentieth Century, investigates why. He compares the competing political and economic systems that dominated the "long 20th century" from 1870 to 2010, and how we managed to create such enormous wealth and still be left with such intractable problems. Support Mindscape on Patreon. J. Bradford DeLong received his Ph.D. in economics from Harvard University. He is currently a professor of economics at the University of California, Berkeley. and chief economist at the Blum Center for Developing Economies. He previously served as deputy assistant secretary of the U.S. Treasury for Economic Policy from 1993 to 1995. He has been a long-running blogger, now moved to Substack. He is a co-editor of The Economists' Voice. Web site Berkeley web page Substack/blog Google Scholar publications Podcast (with Noah Smith) Wikipedia Twitter

Welcome to the September 2022 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 Patrons, 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.

There is no human endeavor that does not have a theory of it — a set of ideas about what makes it work and how to do it well. Music is no exception, popular music included — there are reasons why certain keys, chord changes, and rhythmic structures have proven successful over the years. Nobody has done more to help people understand the theoretical underpinnings of popular music than today's guest, Rick Beato. His YouTube videos dig into how songs work and what makes them great. We talk about music theory and how it contributes to our appreciation of all kinds of music. Support Mindscape on Patreon. Rick Beato obtained a master's degree in jazz studies from the New England Conservatory of Music. He is currently a producer and owner of Black Dog Sound Studios in Georgia, as well as host of a popular YouTube channel. He has worked as a session musician, songwriter, and lecturer at Berklee College of Music and elsewhere. He is the author of The Beato Book Interactive as well as other music-training tools. Web site YouTube channel Discogs page AllMusic page Wikipedia Twitter

It's always a little humbling to think about what affects your words and actions might have on other people, not only right now but potentially well into the future. Now take that humble feeling and promote it to all of humanity, and arbitrarily far in time. How do our actions as a society affect all the potential generations to come? William MacAskill is best known as a founder of the Effective Altruism movement, and is now the author of What We Owe the Future. In this new book he makes the case for longtermism: the idea that we should put substantial effort into positively influencing the long-term future. We talk about the pros and cons of that view, including the underlying philosophical presuppositions. Mindscape listeners can get 50% off What We Owe the Future, thanks to a partnership between the Forethought Foundation and Bookshop.org. Just click here and use code MINDSCAPE50 at checkout. Support Mindscape on Patreon. William (Will) MacAskill received his D.Phil. in philosophy from the University of Oxford. He is currently an associate professor of philosophy at Oxford, as well as a research fellow at the Global Priorities Institute, director of the Forefront Foundation for Global Priorities Research, President of the Centre for Effective Altruism, and co-founder of 80,000 hours and Giving What We Can. Web site PhilPeople profile Google Scholar publications Wikipedia Twitter

Evolution by natural selection is one of the rare scientific theories that resonates within the wider culture as much as it does within science. But as much as people know about evolution, we also find the growth of corresponding myths. Simon Conway Morris is a paleontologist and evolutionary biologist who's new book is From Extraterrestrials to Animal Minds: Six Myths of Evolution. He is known as a defender of evolutionary convergence and adaptationism — even when there is a mass extinction, he argues, the resulting shake-up simply accelerates the developments evolution would have made anyway. We talk about this, and also about the possible role of God in an evolutionary worldview. Support Mindscape on Patreon. Simon Conway Morris received his Ph.D. in geology from the University of Cambridge. He is currently an emeritus professor of evolutionary paleobiology in the Department of Earth Sciences at Cambridge. Among his awards are the Walcott Medal of the National Academy of Sciences and the Lyell Medal of the Geological Society of London. Cambridge web page Google scholar publications Wikipedia Amazon author page

Welcome to the August 2022 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. Here is a link to the Mindscape Big Picture Scholarship. Please consider donating! Support Mindscape on Patreon.

The idea of an "interest rate" might seem mundane and practical, in comparison to our usual topics around here, but there is a profound philosophical idea lurking in the background: if you lend me money now against the promise of me paying you back more in the future, I am relating the different values that a certain sum has to me at different moments in time. Traditionally, the interest rates set by the government have been a major tool for influencing the economy, but in recent decades they have increasingly fallen near zero. John Quiggin relates this change to the shift from manufacturing to an information economy, and we talk about what that means for the public interest in having information be reliable and widely available. And yes, there is a bit about crypto. Support Mindscape on Patreon. John Quiggin received his Ph.D. in economics from the University of New England. He is currently a VC Senior Fellow in Economics at the University of Queensland. He is a Fellow of the Econometric Society and the Academy of the Social Sciences in Australia. Among his books are Zombie Economics: How Dead Ideas Still Walk Among Us and Economics in Two Lessons: Why Markets Work So Well, and Why They Can Fail So Badly. Web site University of Queensland web page Google Scholar publications Amazon author page Wikipedia Twitter

Recent years have seen a revolution in the study of exoplanets, planets that orbit stars other than the Sun (or don't orbit stars at all). After a few tentative detections in the 1990s, dedicated instruments in the 2000s have now pushed the number of known exoplanets into the thousands, enough to begin to categorize their distribution and properties. Today's guest is John Asher Johnson, one of the leaders in this field. We talk about the various different ways that exoplanets can be detected, what we know about them know, and what might happen in the future. Support Mindscape on Patreon. John Asher Johnson received his Ph.D. in astrophysics from the University of California, Berkeley. He is currently professor of astronomy at Harvard University. He is the founder and director of the Banneker Institute for summer undergraduate research. Among his awards are the Newton Lacy Pierce Prize from the American Astronomical Society. He is the author of How Do You Find an Exoplanet? Web site Harvard web page Google Scholar publications Wikipedia Twitter

We describe the world using language — we can't help it. And we all know that ordinary language is an imperfect way of communicating rigorous scientific statements, but sometimes it's the best we can do. Linguist N.J. Enfield argues that the difficulties run more deeply than we might ordinarily suppose. We use language as a descriptive tool, but its origins are found in more social practices — communicating with others to express our feelings and persuade them to agree with us. As such, the very structure of language itself reflects these social purposes, and we have to be careful not to think it provides an unfiltered picture of reality. Support Mindscape on Patreon. N.J. Enfield received his Ph.D. in linguistics from the University of Melbourne. He is currently a professor of linguistics and Director of the Sydney Social Sciences and Humanities Advanced Research Centre at the University of Sydney. His recent book is Language vs. Reality: Why Language Is Good for Lawyers and Bad for Scientists. Web site University of Sydney web page Google Scholar publications Amazon author page

Welcome to the July 2022 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of questions asked by Patreons, whittle them down to a more manageable size — 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. Big news this week! Mindscape is working with Bold.org to sponsor a college scholarship for students interested in studying the fundamental nature of reality. Listeners can find more details and donate here. Our immediate goal is to raise $10,000, and I will match the first $5,000, so this shouldn't be too hard for us here. Hopefully we can raise much more! And hopefully this will help encourage someone who might not otherwise have been able to study this kind of topic. Support Mindscape on Patreon.

The United States is suffering from an epidemic of tragic gun violence. While a political debate rages around the topic of gun control, it remains important to understand the causes and possible remedies for gun violence within the current system. Andrew Papachristos is a sociologist who uses applied network science to study patterns of street violence in urban areas. His research shows that such violence is highly non-random; knowing something about the social networks of perpetrators and victims can help identify who might be at heightened risk of gun violence. It's an interesting example of applying ideas from mathematics and computer science to real-world social situations. Support Mindscape on Patreon. Andrew Papachristos received his Ph.D. in sociology from the University of Chicago. He is currently a professor of sociology at Northwestern University, and a faculty fellow at the Institute for Policy Research. He is also founding director of the Northwestern Neighborhoods and Networks Initiative. Web site Northwestern web page Google Scholar publications Wikipedia Twitter

All of us construct models of the world, and update them on the basis of evidence brought to us by our senses. Scientists try to be more rigorous about it, but we all do it. It's natural that this process will depend on what form that sensory input takes. We know that animals, for example, are typically better or worse than humans at sight, hearing, and so on. And as Ed Yong points out in his new book, it goes far beyond that, as many animals use completely different sensory modalities, from echolocation to direct sensing of electric fields. We talk about what those different capabilities might mean for the animal's-eye (and -ear, etc.) view of the world. Support Mindscape on Patreon. Ed Yong received Masters and Bachelors degrees in zoology from Cambridge University, and an M.Phil. in biochemistry from University College London. He is currently a staff writer for The Atlantic. His work has appeared in National Geographic, the New Yorker, Wired, the New York Times, and elsewhere. He was awarded the Pulitzer Prize in explanatory journalism for his coverage of the COVID-19 pandemic. Among his other awards are the George Polk award for science reporting and the AAAS Kavli Science Journalism Award for in-depth reporting. His new book is An Immense World: How Animal Senses Reveal the Hidden Realms Around Us. Web site Stories at The Atlantic Pulitzer citation Wikipedia Amazon author page Twitter

Welcome to the June 2022 Ask Me Anything episode of Mindscape! We are inaugurating a slightly different publication schedule, in which these monthly AMA will take the place of one of the regular Monday episodes, rather than being in addition to all of them. A slight tweak that will hopefully make my obligations a little more manageable. These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of questions asked by Patreons, whittle them down to a more manageable size — 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!

The 200th episode of Mindscape! Thanks to everyone for sticking around for this long. To celebrate, a solo episode discussing a set of issues naturally arising at the intersection of philosophy and physics: how to think about probabilities and expectations in a multiverse. Here I am more about explaining the issues than offering correct answers, although I try to do a bit of that as well. Support Mindscape on Patreon. References: Guth, "Inflation and Eternal Inflation" Weinberg, "Living In the Multiverse" Susskind, "The Anthropic Landscape of String Theory" Carroll, Johnson, and Randall, "Dynamical Compactification from De Sitter Space" Sebens and Carroll, "Self-Locating Uncertainty and the Origin of Probability in Everettian Quantum Mechanics" Wald, "Asymptotic behavior of homogeneous cosmological models in the presence of a positive cosmological constant" Gibbons and Hawking, "Cosmological Event Horizons, Thermodynamics, and Particle Creation" Carroll and Chatwin-Davies, "Cosmic Equilibration: A Holographic No-Hair Theorem from the Generalized Second Law" Dyson, Kleban, and Susskind, "Disturbing Implications of a Cosmological Constant" Albrecht and Sorbo, "Can the Universe Afford Inflation?" Boddy, Carroll, and Pollack, "De Sitter Space Without Dynamical Quantum Fluctuations" Carroll, "Why Boltzmann Brains Are Bad" Aguirre, Carroll, and Johnson, "Out of Equilibrium: Understanding Cosmological Evolution to Lower-Entropy States" Carroll, "Beyond Falsifiabiliy: Normal Science in a Multiverse" Carter and McCrea, "The Anthropic Principle and its Implications for Biological Evolution" Leslie, "Doomsday Revisited" Gott, "Implications of the Copernican Principle for Our Future Prospects" Bostrom, Anthropic Bias Vilenkin, "The Principle of Mediocrity" Olum, "Conflict Between Anthropic Reasoning and Observation" Elga, "Self-Locating Belief and the Sleeping Beauty Problem" Lewis, "Sleeping Beauty: Reply to Elga" Hartle and Srednicki, "Are We Typical?" Hartle and Srednicki, "Science in a Very Large Universe" Neal, "Puzzles of Anthropic Reasoning Resolved Using Fully Non-Indexical Conditioning"