There are many mysteries surrounding quantum mechanics. To me, the biggest mysteries are why physicists haven’t yet agreed on a complete understanding of the theory, and even more why they mostly seem content not to try. This puzzling attitude has historical roots that go back to the Bohr-Einstein debates. Adam Becker, in his book What Is Real? , looks at this history, and discusses how physicists have shied away from the foundations of quantum mechanics in the subsequent years. We discuss...
Aug 12, 2019•2 hr 40 min•Ep 59•Transcript available on Metacast Fiction shines a light on the human condition by putting people into imaginary situations and envisioning what might happen. Science fiction expands this technique by considering situations in the future, with advanced technology, or with utterly different social contexts. Seth MacFarlane’s show The Orville is good old-fashioned space opera, but it’s also a laboratory for exploring the intricacies of human behavior. There are interpersonal conflicts, sexual politics, alie...
Aug 05, 2019•1 hr 12 min•Ep 58•Transcript available on Metacast “Democracy may not exist, but we’ll miss it when it’s gone” — or so suggests the title of Astra Taylor’s new book . We all know how democracy falls short, in practice, of its lofty ideals; but we can also appreciate how democratic values are crucial in the fight for a more just society. In this conversation, we dig into the nature of democracy, from its origins to the present day. We talk about who gets to participate, how economic inequality affects political inequality, and how democratic idea...
Jul 29, 2019•1 hr 24 min•Ep 57•Transcript available on Metacast Scientists can’t quite agree on how to define “life,” but that hasn’t stopped them from studying it, looking for it elsewhere, or even trying to create it. Kate Adamala is one of a number of scientists engaged in the ambitious project of trying to create living cells, or something approximating them, starting from entirely non-living ingredients. Impressive progress has already been made. Designing cells from scratch will have obvious uses is biology and medicine, but also allow us to build biol...
Jul 22, 2019•1 hr 12 min•Ep 56•Transcript available on Metacast As you may have heard, I have a new book coming out in September, Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime . To celebrate, we're going to have more than the usual number of podcasts about quantum mechanics over the next couple of months. Today is an experimental flipped podcast, in which I'm being interviewed by Rob Reid. Rob is the host of the After On podcast, of which this is also an episode. We talk about quantum mechanics generally and my favorite Many-Worlds a...
Jul 15, 2019•1 hr 26 min•Ep 55•Transcript available on Metacast It doesn’t mean much to say music affects your brain — everything that happens to you affects your brain. But music affects your brain in certain specific ways, from changing our mood to helping us learn. As both a neuroscientist and an opera singer, Indre Viskontas is the ideal person to talk about the relationship between music and the brain. Her new book, How Music Can Make You Better, digs into why we love music, how it can unite and divide us, and how music has a special impact on the very ...
Jul 08, 2019•1 hr 15 min•Ep 54•Transcript available on Metacast What does it mean to be a good person? To act ethically and morally in the world? In the old days we might appeal to the instructions we get from God, but a modern naturalist has to look elsewhere. Today I do a rare solo podcast, where I talk both about my personal views on morality, a variety of “constructivism” according to which human beings construct their ethical stances starting from basic impulses, logical reasoning, and communicating with others. In light of this view, I consider two rea...
Jul 01, 2019•2 hr 5 min•Ep 53•Transcript available on Metacast Games play an important, and arguably increasing, role in human life. We play games on our computers and our phones, watch other people compete in games, and occasionally break out the cards or the Monopoly set. What is the origin of this human impulse, and what makes for a great game? Frank Lantz is both a working game designer and an academic who thinks about the nature of games and gaming. We discuss what games are, contrast the challenges of Go and Poker and other games, and investigate both...
Jun 24, 2019•1 hr 5 min•Ep 52•Transcript available on Metacast Cosmologists have a standard set of puzzles they think about: the nature of dark matter and dark energy, whether there was a period of inflation, the evolution of structure, and so on. But there are also even deeper questions, having to do with why there is a universe at all, and why the early universe had low entropy, that most working cosmologists don’t address. Today’s guest, Anthony Aguirre, is an exception. We talk about these deep issues, and how tackling them might lead to a very differen...
Jun 17, 2019•2 hr 32 min•Ep 51•Transcript available on Metacast It’s fun to spend time thinking about how other people should behave, but fortunately we also have an inner voice that keeps offering opinions about how we should behave ourselves: our conscience. Where did that come from? Today’s guest, Patricia Churchland, is a philosopher and neuroscientist, one of the founders of the subfield of “neurophilosophy.” We dig into the neuroscience of it all, especially how neurochemicals like oxytocin affect our attitudes and behaviors. But we also explore the ph...
Jun 10, 2019•1 hr 12 min•Ep 50•Transcript available on Metacast It’s easy to be cynical about humanity’s present state and future prospects. But we have made it this far, and in some ways we’re doing better than we used to be. Today’s guest, Nicholas Christakis, is an interdisciplinary researcher who studies human nature from a variety of perspectives, including biological, historical, and philosophical. His most recent book is Blueprint: The Evolutionary Origins of a Good Society, in which he tries to pinpoint the common features of all human societies, som...
Jun 03, 2019•2 hr 54 min•Ep 49•Transcript available on Metacast If you’re bad, we are taught, you go to Hell. Who in the world came up with that idea? Some will answer God, but for the purpose of today’s podcast discussion we’ll put that possibility aside and look into the human origins and history of the idea of Hell. Marq de Villiers is a writer and journalist who has authored a series of non-fiction books, many on science and the environment. In Hell & Damnation, he takes a detour to examine the manifold ways in which societies have imagined the afterlife...
May 27, 2019•1 hr 11 min•Ep 48•Transcript available on Metacast Most people in the modern world — and the vast majority of Mindscape listeners, I would imagine — agree that humans are part of the animal kingdom, and that all living animals evolved from a common ancestor. Nevertheless, there are ways in which we are unique; humans are the only animals that stress out over Game of Thrones (as far as I know). I talk with geneticist and science writer Adam Rutherford about what makes us human, and how we got that way, both biologically and culturally. One big ta...
May 20, 2019•2 hr 38 min•Ep 47•Transcript available on Metacast Most of us have no trouble telling the difference between a robot and a living, feeling organism. Nevertheless, our brains often treat robots as if they were alive. We give them names, imagine that they have emotions and inner mental states, get mad at them when they do the wrong thing or feel bad for them when they seem to be in distress. Kate Darling is a research at the MIT Media Lab who specializes in social robotics, the interactions between humans and machines. We talk about why we cannot ...
May 13, 2019•1 hr 7 min•Ep 46•Transcript available on Metacast For decades now physicists have been struggling to reconcile two great ideas from a century ago: general relativity and quantum mechanics. We don’t yet know the final answer, but the journey has taken us to some amazing places. A leader in this quest has been Leonard Susskind, who has helped illuminate some of the most mind-blowing ideas in quantum gravity: the holographic principle, the string theory landscape, black-hole complementarity, and others. He has also become celebrated as a writer, s...
May 06, 2019•1 hr 14 min•Ep 45•Transcript available on Metacast When we talk about the mind, we are constantly talking about consciousness and cognition. Antonio Damasio wants us to talk about our feelings. But it’s not in an effort to be more touchy-feely; Damasio, one of the world’s leading neuroscientists, believes that feelings generated by the body are a crucial part of how we achieve and maintain homeostasis, which in turn is a key driver in understanding who we are. His most recent book, The Strange Order of Things: Life, Feeling, and the Making of Cu...
Apr 29, 2019•1 hr 12 min•Ep 44•Transcript available on Metacast Some people never drink wine; for others, it’s an indispensable part of an enjoyable meal. Whatever your personal feelings might be, wine seems to exhibit a degree of complexity and nuance that can be intimidating to the non-expert. Where does that complexity come from, and how can we best approach wine? To answer these questions, we talk to Matthew Luczy, sommelier and wine director at Mélisse, one of the top fine-dining restaurants in the Los Angeles area. Matthew insisted that we actually dri...
Apr 22, 2019•2 hr 46 min•Ep 43•Transcript available on Metacast The space age officially began in 1957 with the launch of the Sputnik 1 satellite. But recent years have seen the beginning of a boom in the number of objects orbiting Earth, as satellite tracking and communications have assumed enormous importance in the modern world. This raises obvious concerns for the control and eventual fate of these orbiting artifacts. Natalya Bailey is pioneering a novel approach to satellite propulsion, building tiny ion engines at her company Accion Systems. We talk ab...
Apr 15, 2019•1 hr•Ep 42•Transcript available on Metacast One of the most important insights in the history of science is the fact that complex behavior can arise from the undirected movements of small, simple systems. Despite the fact that we know this, we’re still working to truly understand it — to uncover the mechanisms by which, and conditions under which, complexity can emerge from simplicity. (Coincidentally, a new feature in Quanta on this precise topic came out while this episode was being edited.) Steven Strogatz is a leading researcher in th...
Apr 08, 2019•1 hr 15 min•Ep 41•Transcript available on Metacast The modern world is full of technology, and also with anxiety about technology. We worry about robot uprisings and artificial intelligence taking over, and we contemplate what it would mean for a computer to be conscious or truly human. It should probably come as no surprise that these ideas aren’t new to modern society — they go way back, at least to the stories and mythologies of ancient Greece. Today’s guest, Adrienne Mayor, is a folklorist and historian of science, whose recent work has been...
Apr 01, 2019•1 hr 3 min•Ep 40•Transcript available on Metacast Consciousness has many aspects, from experience to wakefulness to self-awareness. One aspect is imagination: our minds can conjure up multiple hypothetical futures to help us decide which choices we should make. Where did that ability come from? Today’s guest, Malcolm MacIver, pinpoints an important transition in the evolution of consciousness to when fish first climbed on to land, and could suddenly see much farther, which in turn made it advantageous to plan further in advance. If this idea is...
Mar 25, 2019•1 hr 20 min•Ep 39•Transcript available on Metacast Let’s say, for sake of argument, that you don’t believe in God or the supernatural. Is there still a place for talking about transcendence, the sacred, and meaning in life? Some of the above, but not all? Today’s guest, Alan Lightman, brings a unique perspective to these questions, as someone who has worked within both the sciences and the humanities at the highest level. In his most recent book, Searching for Stars on an Island in Maine, he makes the case that naturalists should take transcende...
Mar 18, 2019•1 hr 17 min•Ep 38•Transcript available on Metacast When many of us think “Ancient Rome,” we think of the Empire and the Caesars. But the Empire was preceded by the Roman Republic, which flourished for a full five centuries. Why, after such a long and prosperous run, would an essentially democratic form of government change — with a good deal of approval from its citizens — into an autocracy? That’s the question I discuss with today’s guest, historian Edward Watts. It’s a fascinating story with many contemporary resonances, especially how reforme...
Mar 11, 2019•2 hr 31 min•Ep 37•Transcript available on Metacast Quantum mechanics is our best theory of how reality works at a fundamental level, yet physicists still can’t agree on what the theory actually says. At the heart of the puzzle is the “measurement problem”: what actually happens when we observe a quantum system, and why do we apparently need separate rules when it happens? David Albert is one of the leading figures in the foundations of quantum mechanics today, and we discuss the measurement problem and why it’s so puzzling. Then we dive into the...
Mar 04, 2019•2 hr 43 min•Ep 36•Transcript available on Metacast Everything we think about the world outside our immediate senses is shaped by information brought to us by other sources. In the case of what’s currently happening to the human race, we call that information “the news.” There is no such thing as “unfiltered” news — no matter how we get it, someone is deciding what information to convey and how to convey it. And the way that is happening is currently in a state of flux. Today’s guest, journalist Jessica Yellin, has seen the news business from the...
Feb 25, 2019•1 hr 9 min•Ep 35•Transcript available on Metacast Within every person’s mind there is on ongoing battle between reason and emotion. It’s not always a battle, of course; very often the two can work together. But at other times, our emotions push us toward actions that our reason would counsel against. Paul Bloom is a well-known psychologist and author who wrote the provocatively-titled book Against Empathy: The Case for Rational Compassion, and is currently writing a book about the nature of cruelty. While I sympathize with parts of his anti-emp...
Feb 18, 2019•1 hr 11 min•Ep 34•Transcript available on Metacast Reality is a tricky thing. Is love real? What about the number 5? This is clearly a job for a philosopher, and James Ladyman is one of the world’s acknowledged experts. He and his collaborators have been championing a view known as “structural realism,” in which real things are those that reflect true, useful patterns in the underlying reality. We talk about that, but also about a couple of other subjects in the broad area of philosophy of science: the history and current status of materialism/p...
Feb 11, 2019•1 hr 7 min•Ep 33•Transcript available on Metacast Our climate is in the midst of dramatic changes, driven largely by human activity, with potentially enormous consequences for humanity and other species. That’s why science tells us, anyway. But there is an influential contingent, especially in the United States, who deny that reality, and work hard to prevent policy action that might ameliorate it. Where did this resistance come from, and what makes it so successful? Naomi Oreskes is a distinguished historian of science who has become, half-rel...
Feb 04, 2019•1 hr 10 min•Ep 32•Transcript available on Metacast String theory was originally proposed as a relatively modest attempt to explain some features of strongly-interacting particles, but before too long developed into an ambitious attempt to unite all the forces of nature into a single theory. The great thing about physics is that your theories don’t always go where you want them to, and string theory has had some twists and turns along the way. One major challenge facing the theory is the fact that there are many different ways to connect the deep...
Jan 28, 2019•1 hr 12 min•Ep 31•Transcript available on Metacast It’s hardly news that computers are exerting ever more influence over our lives. And we’re beginning to see the first glimmers of some kind of artificial intelligence: computer programs have become much better than humans at well-defined jobs like playing chess and Go, and are increasingly called upon for messier tasks, like driving cars. Once we leave the highly constrained sphere of artificial games and enter the real world of human actions, our artificial intelligences are going to have to ma...
Jan 21, 2019•1 hr 29 min•Ep 30•Transcript available on Metacast 
