Inner Cosmos with David Eagleman

Ep148 "How can we improve political dialog?" with Saul Perlmutter

Mon, 06 Apr 2026 10:00:00 +0000

How can we improve political dialogue, and what does this have to do with the discovery that the universe behaves differently than expected? Why do we cling to beliefs even when evidence pushes against them? What if the biggest problem facing humanity could be solved with practice? Join Eagleman today with Saul Perlmutter, a Nobel-prize winning astrophysicist, but instead of the cosmos we talk about the inner cosmos: why polarization happens and how we might address it with a different kind of thinking.

Ep147 "Can we engineer human thought?" with Tom Griffiths

Mon, 30 Mar 2026 10:00:00 +0000

Can the mind be captured with math? Modern AI seems to have burst out of the gate recently, but is it actually the latest chapter in a 300-year project to turn thought into something we can model? Why does current AI need petabytes of data, but a child can learn from just a few examples? Why does AI have 'jagged' intelligence – meaning it looks brilliant in one moment and then does something that seems nonsensical? In physics we have various laws (gravity, motion, etc), and today we’re joined by cognitive scientist Tom Griffiths to ask whether we're moving towards laws of thought.

Ep146 "Who Counts as Human in Your Mind?" with Lasana Harris

Mon, 23 Mar 2026 10:00:00 +0000

When do you view another person like an object? This is what neuroscientists mean when they talk about de-humanization: your brain doesn't crank up its social circuitry to understand the other person as having a mind like you do. Is dehumanization a cause of violence, or the fuel that keeps it burning? Do people who view themselves as highly empathetic dehumanize more than others? And on the flip side, why do we sometimes think chatbots or robots are people with interior minds? Will kids raised with AI grow up to fight for AI rights? Today we dive deep into how your brain sees others with social neuroscientist Lasana Harris.

Ep145 Why do we compulsively click on ragebait? with Angele Christin

Mon, 16 Mar 2026 10:00:00 +0000

Do algorithms shape our lives? What did clickbait look like before the internet? Why do journalists start writing differently when metrics are introduced? What does any of this have to do with cooking pasta in the bathtub, the actress Sarah Bernhardt, or Oxford English Dictionary’s word of the year? Join Eagleman with sociologist Angele Cristin to learn how algorithms invisibly sculpt our behavior.

Ep144 "How do things last?" Part 2: Millennia with Alexander Rose

Mon, 09 Mar 2026 10:00:00 +0000

What is a 10,000 year clock? What is the Y10k bug? What allows some organizations to last a millennium? What do ancient ceramics have to do with ball bearings in satellites? What does any of this have to do with bristlecone pine trees, cymbals, or an extant hotel that launched in the sixth century? Join today for thinking about ourselves on a 10,000 year timescale with guest Alexander Rose.

Ep143 "How do things last?" Part 1: neurons to civilizations

Mon, 02 Mar 2026 11:00:00 +0000

What makes things last, and what do very different lasting things have in common? Why might a space alien not be able to understand music? Why do windows in medieval cathedrals look thicker at the bottom, and what does this reveal about the world’s religions? What was the most important weapon in ancient history, and how did it disappear? Join today for the story of persistence, from sharks to schizophrenia to Roman concrete to DNA.

Ep142 "Do breakthroughs require rule-breakers?" with Eric Weinstein

Mon, 23 Feb 2026 11:00:00 +0000

Why do revolutionary ideas so often come from outsiders? Do good scientists sometimes crowd out great ones? Do we still have room for scientific cowboys? And what is the relationship between national security and modern science? Are scientists participants in a larger game they barely see? What if the most important ideas are the ones you’re not allowed to hear about? From Crick and Watson to nuclear bombs and AI, today we’ll cover it all with physicist, mathematician, and iconoclast Eric Weinstein.

Ep141 "What do brains and weather systems have in common?" with Nicole Rust

Mon, 16 Feb 2026 11:00:00 +0000

Does brain science need a new grand plan? Is the brain less like an assembly line and more like a weather system? What does this mean for what counts as explanatory, and how might AI help us in the near future? What does any of this have to do with how the drug Ritalin got its name? Today we’ll speak with neuroscientist Nicole Rust, author of Elusive Cures.

Ep140 "How does your brain decide what’s true?" with Sam Harris

Mon, 09 Feb 2026 11:00:00 +0000

Why do we believe what we believe? Why is changing our opinions so difficult, and why does a challenged belief so often feel like a personal attack? What if beliefs didn’t evolve to be true, but to be socially useful? Today we speak with Sam Harris about the topic of our beliefs: how we see the world and what we take to be true about it.

Ep139 "What does alignment look like in a society of AIs?" with Danielle Perszyk

Mon, 02 Feb 2026 11:00:00 +0000

Is intelligence a property of individual brains, or is it something that emerges from many brains trying to align with one another? How can we build AI agents to improve our understanding of the world and to mediate between rivaling humans? For this and much more, we speak today with Danielle Perszyk, a cognitive scientist who leads the human-computer interaction team at Amazon’s AGI Lab.

Ep138 "Why do our political brains mistake opinion for truth?" with Kaizen Asiedu

Mon, 26 Jan 2026 11:00:00 +0000

What if your confidence in your political beliefs does not correlate with their accuracy? Why does a pundit's outrage often feel so convincing and nuance so unsatisfying? Are conspiracy theories a predictable feature of human brains? Is there any way to stop ourselves from mistaking our feelings for conclusions? How can we come to be clearer thinkers? Today we speak with political commentator Kaizen Asiedu about how we arrive at our hot takes on the world.

Ep137 "Do cures ever create the next crisis?" with Thomas Goetz

Mon, 19 Jan 2026 11:00:00 +0000

Medications are among the most important advancements of science, but their social consequences are often complex. What if some of our most common diseases are design flaws of modern life? Does it matter if we're fixing a root cause rather than just circumventing it? If a pill can quiet hunger, pain, or anxiety, is that "cheating"? Today we talk about the fascinating world of prescription drugs with science journalist Thomas Goetz.

Ep136 "Why do we care about mattering?" with Rebecca Goldstein

Mon, 12 Jan 2026 11:00:00 +0000

What does it mean for your life to matter? We all talk a lot about happiness, pleasure, and meaning... but what if the real engine underneath it all is the need to feel we count? Is it possible that depression, extremism, and ambition all stem from the same psychological source? When is political polarization less about beliefs and more about threatened significance? Join Eagleman with philosopher and writer Rebecca Goldstein, author of "The Mattering Instinct".

Ep135: What does neuroscience mean by hypnosis? with David Spiegel

Mon, 05 Jan 2026 11:00:00 +0000

What exactly is hypnosis? We’ve all heard of circus-like versions, but is there a real element to hypnosis that psychiatrists and neuroscientists are able to leverage? Can attention and expectation change what we feel (such as pain or anxiety)? What do suggestible states reveal about the brain’s pathways? How does hypnosis compare to meditation, flow states, or psychedelic drugs? Today we speak with David Spiegel, Stanford psychiatrist and one of the world’s experts in hypnosis.

Ep82 Re Broadcast "Why Do Your 30 Trillion Cells Feel Like a Self?" Part 1

Mon, 29 Dec 2025 11:00:00 +0000

Happy Holidays- New Episodes starting Jan. 5th

Every cell in your body changes, so why do you have a sense of continuity of the self – as though you're the same person you were a month ago? What does this have to do with the watercraft of the Greek demigod Theseus, or the End-of-History illusion, or why you go through so much trouble to make things comfortable for your future self, even though you don't know that person? And if there really were an afterlife, what age would your deity make everyone for living out their eternities? Join this week for a two-parter about the mysteries of selfhood.

Ep70 Re Broadcast "Why do our memories drift? Part 1: The War of the Ghosts"

Mon, 22 Dec 2025 11:00:00 +0000

Happy Holidays- New episodes starting Jan. 5th

Why did lions look so strange in medieval European art? What does this have to do with Native American folklore, eyewitness memory of a car accident, or what a person remembers 3 years after witnessing the 9/11 attack on the World Trade Center? And what does any of this have to do with flashbulb memories, misinformation, and the telephone game that you played as a child? Join Eagleman for part 1 of an astonishing journey into what we believe about our memories.

Ep134 "What do brains teach us about morality?" with Joshua Greene

Mon, 15 Dec 2025 11:00:00 +0000

Why will you make different moral decisions in similar circumstances? Why do some people make different choices than you? What happens when ancient moral instincts collide with modern problems such as pandemics, AI alignment, and political tribalism? Could a simple online game reduce polarization? Could you contribute to charities more effectively if you understood how your moral brain decides? Join Eagleman this week with guest Joshua Greene as we open the hood of human morality.

Ep133 "Why do people hold misbeliefs?" with Dan Ariely

Mon, 08 Dec 2025 11:00:00 +0000

Why do people sometimes buy into ideas that seem obviously false from the outside, as with conspiracy theories? Is this kind of misbelief a universal feature of human brains? Does it offer clarity and belonging when reality feels chaotic and threatening? What would it take for you (under the right emotional conditions) to begin believing something that your past self would find unbelievable? Today we’ll speak with behavioral economist Dan Ariely, who has thought a lot about misbelief: for him it's a scientific question, but also an interest that started very personally.

Ep132 "What will AI mean for the economy?" with Andrew Mayne

Mon, 01 Dec 2025 11:00:00 +0000

If AI can do everything from writing novels to designing proteins, what remains that only humans can do? What's the human advantage in a world where machines can outperform us at almost any measurable task? What does any of this have to do with Stephen King’s nightmares, Tom Cruise’s stunts, the first shoeshine caught on camera, the shortage of air conditioner repairmen, and why hyper-capable AI might actually increase the demand for unexpected jobs? Today we speak with author and technologist Andrew Mayne.

Ep131 "What do brains tell us about politics?" Part 2: Rehumanization

Mon, 24 Nov 2025 11:00:00 +0000

How do societies work their way out of polarization? And what does the answer have to do with broken trucks, the Apollo program, the movie 'Watchmen', Iroquois Native Americans, a new idea for social media algorithms, moral taste buds, and how we can take advantage of the common threads that bond us -- coming to see each other again as fellow travelers improvising their way through the same noisy world?

Ep130 "What do brains tell us about politics?" Part 1: Polarization

Mon, 17 Nov 2025 11:00:00 +0000

What do propaganda posters have in common across nation and time, and how is that related to the medial prefrontal cortex? What is behind repeating cycles of societal polarization? What does any of this have to do with the American Civil War, hippies vs soldiers, border ruffians vs free-staters, hanging chads, Pearl Harbor, and why education can serve as an immune response to mind viruses?

Ep129 "Is utopia possible or do human brains preclude it?" with Paul Bloom

Mon, 10 Nov 2025 11:00:00 +0000

Would a utopia be possible? Or does our innate tribalism and jealousy make perfect societies difficult to achieve? Do we secretly love hierarchies? Why are primate brains such excellent detectors of unfairness? Why do things become more desirable when we’re told we can’t have them? Did the church’s disavowal of first-cousin marriage lead to better politics? This week Eagleman talks with psychologist Paul Bloom about the (im)possibility of achieving societal utopias.

Ep128 "Would space aliens see the world as we do?" with Daniel Whiteson

Mon, 03 Nov 2025 11:00:00 +0000

Imagine we eventually meet some alien scientists. If they can see electrons or smell photons, would their science look like ours? Is physics a universal language, or just a local dialect of the human brain? Would aliens use math, or might their truths be organized unrecognizably? Are the “laws of nature” really laws, or simply our interpretations? Join Eagleman with particle physicist Daniel Whiteson, author of the new book “Do Aliens Speak Physics?”

EP127 "What happens when we marry brains to machines?" with Sergey Stavisky

Mon, 27 Oct 2025 10:00:00 +0000

What is a brain-computer interface? How can a paralyzed person use her brain to control a robotic arm? How can someone who's lost the gift of speech use brain signals to broadcast his voice again? Can we eventually restore autonomy and dignity so seamlessly that the technology disappears and the person reappears? Where are the ethical boundaries between restoring function and spying on private thought? Who owns the stream of neural data that represents you? Join this week with guest neuroscientist Sergey Stavisky as we dive into the world of interfacing brains and machines.

Ep126 "Does science fiction shape reality?" with Bethanie Maples

Mon, 20 Oct 2025 10:00:00 +0000

How is sci-fi like a cultural research and development lab? Will we someday have AI agents that live in robot bodies, and will we be liable if they commit murder? What happens when reality is no longer verifiable? How can we create AI advocates that guide us toward self-actualization over distraction? What is a Young Lady's Illustrated Primer? This week we talk with researcher Bethany Maples about science fiction and how it might prepare us to wrestle with the deepest questions about AI, identity, and the future of humanity.

Ep125 "Why do brains need friends?" (with Ben Rein)

Mon, 13 Oct 2025 10:00:00 +0000

Why do human brains need social interaction? Why might AI chatbots be insufficient to scratch the itch? What do we love so much about real human touch and in-person interaction? Why do so many of us live with dogs? From empathy to introversion to social media to isolation (and what to do about it), we’ve got it all this week with guest Ben Rein, author of the new book Why Brains Need Friends.

Ep124 "Why don't we notice gaps in time?"

Mon, 06 Oct 2025 10:00:00 +0000

How is your consciousness like a flame that continually goes out and gets re-lit? Why can you see other people's eyes move, but you can't see your own eyes move in the mirror? And what does any of this have to do with deep sleep, anesthesia, comas, amnesia, and empires of soft-bodied creatures that came before us? Tune in this week for some science that will shift your view of reality.

Ep123 "Will AI cure loneliness?" with Paul Bloom

Mon, 29 Sep 2025 10:00:00 +0000

On the one hand, AI companions are (increasingly) amazing at rectifying isolation. But on the other hand, loneliness is a biological signal that pushes us toward improving ourselves socially. So what's the right balance here? And does everyone have the same need to cure loneliness? In other words, might AI relationships mess up our young even while providing a critical lifeline to our seniors? Join this week as we dive deep with psychologist Paul Bloom.

Ep122 "Why do we so rarely say what we mean?" (with Steven Pinker)

Mon, 22 Sep 2025 10:00:00 +0000

Why do people on a date speak in innuendo? Why do dictators squelch protests? Why do humans stand apart from the rest of the animal kingdom by blushing, laughing, and crying? And what does any of this have to do with bullies, George Costanza, or cancel culture? Join this week with cognitive scientist Steven Pinker as we discuss his new book on common knowledge: “When Everyone Knows That Everyone Knows”.

Ep121 "What’s the secret to intelligence (in brains and AI)?" with Ramesh Raskar

Mon, 15 Sep 2025 10:00:00 +0000

Is AI going to go the same way as computing: from colossal LLMs owned by a few companies to billions of networked AI agents? How does that parallel one of the great underappreciated secrets of the human brain? Join this week with guest MIT Media Lab professor (and AI-decentralizer) Ramesh Raskar.

Ep120 "Will AI build us into better humans?"

Mon, 08 Sep 2025 10:00:00 +0000

Will AI end up building us into stronger, more talented humans? What might this have to do with linguistics, the movie Arrival, self-driving cars, debate, video games, elections, chess, and the ancient game of Go? Are we going to be taken over, or instead exposed to ideas and concepts that stretch the boundaries of our thinking? Join this week to see how AI might just up the human game.

Ep119 "Why do brains believe in the unbelievable?" with Bruce Hood

Mon, 01 Sep 2025 10:00:00 +0000

Why are brains superstitious? Would you wear a nice sweater that belonged to a murderer? What does this have to do with lucky socks, ghosts, our interpretation of coincidences, why kids often need their special blankets, and what any of this has to do with the brain? Join this week with guest Bruce Hood to learn why it's so natural for brains to take incomplete data and infer causes.

Ep118 "Why has the brain always been our hardest puzzle?" with Matthew Cobb

Mon, 25 Aug 2025 10:00:00 +0000

How have humans through the ages tried to crack the mysteries of the brain, and why are our theories always yoked to the most recent technologies? What does the history of brain science have to do with bumps on the skull, electricity, Frankenstein, animatronics, telegraphs, telephone exchanges, computers, and LLMs? What's the next metaphor we'll use to try to capture the brain’s magic? Join this week with guest Matthew Cobb.

Ep117 "What does brain science have to do with free speech? (with Greg Lukianoff)" (with Greg Lukianoff)

Mon, 18 Aug 2025 10:00:00 +0000

Most people claim to be in favor of free speech, but they often mean speech from their own side (and not whatever those crazy people on the other side want to say). But from the point of view of the brain, why does free speech need to be rigorously defended? What does this have to do with internal models, printing presses, college campuses, John Stuart Mill, online indecency, cultures of honor, Robinson Crusoe, cancel culture, the importance of literature, and why free speech makes everyone safer?

Ep116 " What is Color? Part 2: Why royals wear purple"

Mon, 11 Aug 2025 10:00:00 +0000

Are there new colors you could see? And why are they impossible to imagine before you've seen them? Can you lose your color vision? And what does any of this have to do with linguistic color terms, why the military likes colorblind people for a particular task, and why Eagleman suggests that the cultural history of Thailand was influenced by one single, unknown neurodivergent?

Ep115 "What is color? Part 1: Why hunters wear orange"

Mon, 04 Aug 2025 10:00:00 +0000

Why do birds and bees choose different flowers? Why do mammals' eyes seem to be optimized for moving around at night, and what does that have to do with hairless humans getting angry? What does any of this have to do with road signs, camouflage, mantis shrimp, the sun, the dress that broke the internet, and women who can see more colors than you can?

Ep114 "Would you eat a self burger?"

Mon, 28 Jul 2025 10:00:00 +0000

Would you eat a burger grown from a human muscle cell? Would you rather use your own cell or someone else's? What does the future of lab-grown meat illuminate about neuroscience, our calculations of morality, and whether your grandchildren will have a different answer? What does any of this have to do with endangered species, the sacred versus the profane, brain plasticity, moral positioning, social belonging, stepping on the boundary between mental categories, flesh copyrights, and the future of personhood?

Ep113 "What's special about inventors?" (with Pablos Holman)

Mon, 21 Jul 2025 10:00:00 +0000

Why do some people jump into entirely new categories of possibility? And what does this have to do with self-driving ships, solar panels in space, shooting mosquitoes with lasers, skateboarding tricks, silent drones, and our future as a species? Join Eagleman with guest Pablos Holman, a venture capitalist, author, and connoisseur of invention.

Ep112 "How is computer code like magic?" (with Sam Arbesman)

Mon, 14 Jul 2025 10:00:00 +0000

What is code, and can it be thought of like a magic spell? Are we building a world so complex that we will lose the ability to understand its operations -- and has that already happened? What does any of this have to do with SimCity, or knowledge that already exists but no one has put together, or how coding will evolve in the near future? Join Eagleman with scientist Sam Arbesman, who has just written a book asking the question: what is code, really?

Ep111 "Might we be surrounded with undetected minds?" (with Michael Levin)

Mon, 07 Jul 2025 10:00:00 +0000

What is intelligence? If we look hard, can we find it in unexpected places: not just in brains but in all kinds of structures? How should we recognize it? And what does any of this have to do with a bipedal dog born without front legs, or making small new organisms out of single cells, or how Wikipedia might be like an axolotl, or why we are so blind to the vast variety of minds that might surround us? Join Eagleman with guest Michael Levin, professor at Tufts, about how we might discover intelligence all around us in ways we don't typically intuit.

Ep110 "Is consciousness related to quantum physics?" (with Roger Penrose and Stuart Hameroff)

Mon, 30 Jun 2025 10:00:00 +0000

Can we explain consciousness as emerging from classical neuroscience, or do we require deeper principles? Could quantum physics have something to do with it? Is it possible that consciousness predates biology, and biology evolved to take advantage of it? What are the right ways to build new theories in neuroscience when we don’t know the answers? Join Eagleman with Nobel laureate Roger Penrose and anesthesiologist Stuart Hameroff to explore the controversial idea that there could be, even possibly, any connection between quantum theory and our awareness of the world.

Ep85 rebroadcast - "What is a Thought?"

Mon, 23 Jun 2025 10:00:00 +0000

Brains bear thoughts like a peach tree bears peaches. Even for meditators it's almost impossible to stop the firehose of words and images and ideas. But what in the world is a thought, physically? How can you hear a voice in your head when there's no one speaking in the outside world? And what does any of this have to do with a small marine animal who eats its own brain? Join Eagleman for this week's deep dive into our inner life.

Ep109 "Are you one mind or many drives?" with Jordan Peterson

Mon, 16 Jun 2025 10:00:00 +0000

Is your brain a one-person show or an ensemble cast of rivaling neural networks? How do we manage the conflict between different drives, and what does this have to do with literature, deities, maturation, and what Nietzsche meant when he said “every drive wants to be master, and it attempts to philosophize in that spirit”? Join Eagleman this week with Jordan Peterson as we examine the way lives are built on conflicting wants.

Ep108 "Can brains increase their happiness?" (with Bruce Hood)

Mon, 09 Jun 2025 10:00:00 +0000

Is it possible to become happier? How much of your happiness has to do with genetics, social connection, comparison to other people, your balance of optimism vs pessimism, and whether it would be useful to keep a journal of your life? Join Eagleman this week with Bruce Hood, experimental psychologist and author of “The Science of Happiness”.

Ep107 "Why do brains love stories?" (with Joshua Landy)

Mon, 02 Jun 2025 10:00:00 +0000

How do brains slip so easily from the real world into made up worlds? What do authors of great literature have in common with stage magicians and comedians? What does any of this have to do with cognitive shortcuts, prediction machines, Marcel Proust, Toni Morrison, Jane Austen, or why jokes are always structured in threes? Join Eagleman this week for a conversation with his Stanford colleague Joshua Landy as they discuss brains on story.

Ep106 "What happens when brains watch movies?" (with Jeffrey Zacks)

Mon, 26 May 2025 10:00:00 +0000

Why do movies work so well? What does film reveal about the way the brain processes reality? What does any of this have to do with omniscience, simulation, jumping around in time, or why dogs don’t do story? Join Eagleman with guest Jeffrey Zacks, cognitive scientist at Wash U, as we dive into the peculiar magic that happens when the lights go down, the screen glows to life, and we find ourselves pulled into the world of a film.

Ep105 "What if AI is not actually intelligent?" (with Alison Gopnik)

Mon, 19 May 2025 10:00:00 +0000

Is AI an intelligent agent, or is there a different way we should be thinking about it? Is it more like a piece of cultural technology? What in the world is a piece of cultural technology -- and how would re-thinking this change our next steps? What does any of this have to do with the myth of the Golem, printing presses, Socrates, Martin Luther, or the story of stone soup? Join Eagleman this week with cognitive scientist Alison Gopnik for a new take on a new tech.

Ep104 "What is your internal world really like?" (with Russell Hurlburt)

Mon, 12 May 2025 10:00:00 +0000

If you had to give a detailed description of what flits through your mind, how good would you be at it? Might you be surprised at how many of your thoughts don't involve language? Are your thoughts changed by paying attention to them? What does this have to do with getting surprised by a random beep and immediately writing down what you’re thinking? Join Eagleman this week in conversation with Russell Hurlburt, a clinical psychologist who developed a new method to probe inner life.

Ep103 "Could you ever know what it’s like to be someone else?" (Part 2)

Mon, 05 May 2025 10:00:00 +0000

What would it take to get inside someone else's head, and could new brain technologies ever help us get there? Will there be dream celebrities, in which uploads go viral? What does consciousness feel like from the inside, and why do movies always get this wrong? Why don't you see your own blinks? What would it be like if exactly 1/2 of your brain was numbed to sleep? And what would it be like to become a horse?

Ep102 "Could you ever know what it’s like to be someone else?" (Part 1)

Mon, 28 Apr 2025 10:00:00 +0000

What does it mean to stand in another’s shoes—and when are the gaps between us too wide to cross? This week, Eagleman explores bats, kicked robots, Helen Keller, empathy, storytelling, and the phrase “I know exactly how you feel.” We'll weave through neuroscience, philosophy, literature, and technology to ask: Can we ever truly understand another’s inner world?

Ep101 "Why do people walk away from bad events with different outcomes?"

Mon, 21 Apr 2025 10:00:00 +0000

What enables some people to keep going when everything falls apart? We all know someone who’s been through hell and comes out standing. This episode is about resilience. Join Eagleman with guest Dr. Jonathan Downar to discover what happens in the brain when we face adversity. Is resilience something you’re born with, or is it something your brain can develop? What does any of this have to do with The Diving Bell and the Butterfly, using magnetic fields to zap the brain, the less famous partner to the reward system, or what seemingly unrelated disorders in psychiatry all have in common?

Ep100 "Why do brains love slow motion video?"

Mon, 14 Apr 2025 10:00:00 +0000

What does The Matrix tell us about the brain and time perception? And what does that have to do with champion bicyclists, hidden data, elementary particles, secret murderers, or time machines? Today’s episode is about slow motion: what’s going on in the brain, and why we are so mesmerized by it. Whether watching a sword battle, basketball dunk, or sprinters, we're pulled to slow motion like moths to flame... but have you ever wondered from a neuroscience perspective what that’s all about? Me too, and hence today’s 100th weekiversary episode.

Ep99 "Why do brains sometimes make things up?"

Mon, 07 Apr 2025 10:00:00 +0000

Your brain occasionally cooks up falsehoods that you believe entirely, but why does this confabulation happen, and how frequently? What does this tell us about memory, truth-telling, and your life as a story that drifts? And what does this have to do with a paralyzed Supreme Court judge, a blind person who insists she can see, whether Nelson Mandela did or did not die in the 1980s, or whether Curious George had a tail?

EP98 "What's the future of AI relationships?" (with Bethanie Maples)

Mon, 31 Mar 2025 10:00:00 +0000

How many people are having relationships with artificial neural networks? Should we think of AI lovers as traps, mirrors, or sandboxes? Is there a clear line between relationship bots and therapist bots? And what does this have to do with Eliza Doolittle, a doll cabinet in your head, loneliness epidemics, or suicide mitigation? Join Eagleman with guest researcher Bethanie Maples to discover where we are and where we're going.

Ep 97 "Can we rewrite the human code?" (with Trevor Martin)

Mon, 24 Mar 2025 10:00:00 +0000

You're defined in part by the genome you arrive with -- so what does it mean when you can edit it? What does this have to do with viruses, copy-pasting, and whether we will modify the story of our own species? Join Eagleman with guest Trevor Martin, CEO of Mammoth Biosciences, for this week's episode about the remarkable situation we find ourselves in, now that we know how to read and write our biological inheritance.

Ep96 "What’s the future of education in an AI world?" (Part 2: Sal Khan)

Mon, 17 Mar 2025 10:00:00 +0000

Now that we’re careening into our AI future, what are the most important things for our students to learn? Do we keep teaching as we always have, do we drop our heads on the desk, or are there clever ways to steer and optimize education? What would Sal Khan, founder of Khan Academy, say about all this? Find out in this week's episode.

Ep95 "What's the future of education in an AI world?" (Part 1)

Mon, 10 Mar 2025 10:00:00 +0000

How can we rethink schools to meet the future? What does this have to do with the invention of the printing press, the prevalence of desk calculators, or the spread of Google? And how is this connected to the writer Goethe, a digital replica of the philosopher Aristotle, or the two lasting bequests that we should give our children? Join Eagleman this week for surprises about what AI means for the next generation.

Ep94 "How does the brain construct reality?"

Mon, 03 Mar 2025 11:00:00 +0000

Do you perceive red the same way I do? What is wrong with the textbook model of vision? Why do brains have so many internal feedback loops? And what does any of this have to do with Plato’s cave, Ernest Hemingway, or artificial neural networks that perceive dogs everywhere? Join Eagleman with guest Anil Seth, author of “Being You”, to explore the scientific problem of consciousness.

David Eagleman on Joy A Podcast. Hosted by Craig Ferguson

Fri, 28 Feb 2025 20:00:00 +0000

Meet David Eagleman - neuroscientist, author, and more. He is best known for his work on sensory substitution, time perception, brain plasticity, synesthesia, and neurolaw and is currently a neuroscientist at Stanford University. I thoroughly enjoyed picking his brain and I hope you enJOY too!

Ep93 "Will AI kill our creativity or enhance it?"

Mon, 24 Feb 2025 11:00:00 +0000

How will creative people make a living in a world with AI? Is there a different way to think about the economy of the future -- and how might it involve mystifying and elevating humans? What does the term “data dignity" mean? Join Eagleman with guest Jaron Lanier -- computer scientist, artist, futurist -- as they discuss AI's boundless creative output and how we might thoughtfully navigate into the future.

Ep92 "Why is it hard to keep a secret?"

Mon, 17 Feb 2025 11:00:00 +0000

How are secrets in the brain like Abraham Lincoln’s political cabinet? Will AI in the near future hide things from you? And what does any of this have to do with political hierarchies, the formula for Coca-Cola, or deceptive chimpanzees? Join Eagleman to understand what neuroscience tells us about secrets: what they are, why they weigh on us, and how they sometimes grow into tangled webs we never meant to weave.

Ep91 "What is love?"

Mon, 10 Feb 2025 11:00:00 +0000

What are we talking about neurobiologically when we talk about love? What does it have to do with how you were raised, the symmetry of someone's face, or the smell of their underarms? What do we learn from heartbreak, rom-coms, and little rodents called prairie voles? And what is the future of love & AI? Join Eagleman for a Valentine's Day special to learn what unseen sparks in the skull set the heart ablaze.

Ep90 "What's the future of connecting our tech to our brains?"

Mon, 03 Feb 2025 11:00:00 +0000

A brain's 86 billion neurons are always chattering along with tiny electrical and chemical signals. But how can we get inside the brain to study the fine details? Can we eavesdrop on cells using other cells? What is the future of communication between brains? Join Eagleman with special guest Max Hodak, founder of Science Corp, a company pioneering stunning new methods in brain computer interfaces.

Ep89 "Why do you love some flavors and not others?"

Mon, 27 Jan 2025 11:00:00 +0000

Why do you like the taste of things that your friend doesn't? Why do kids not like coffee but adults do? What does any of this have to do with smelling people’s armpits, whether women really synchronize their menstruation, whether your culture eats a lot of spicy foods, and how animals sense the world? Join Eagleman this week to understand why there's no accounting for taste.

Ep88 "Might there exist very different kinds of minds?"

Mon, 20 Jan 2025 11:00:00 +0000

Why is it so difficult to define intelligence? What does this have to do with being a fish in water trying to describe water? Might we humans possess one kind of intelligence in a constellation of many other types? And what does this have to do with empathy, AI, and our search for extraterrestrial life? Join Eagleman with guest Kevin Kelly as they dive into whether there might exist very different kinds of minds.

Ep 87 "How do we operate in the present when we perceive the past?"

Mon, 13 Jan 2025 11:00:00 +0000

Because visual signals take time to process, we live slightly in the past. So how do we ever catch a baseball? And what does this have to do with certain visual illusions, or the view in New York City, or the things you were never taught in school, or the warp drive in Star Trek? Join Eagleman this week for a mind blowing look at the strange relationship between vision and time.

Ep86 "What are emotions?"

Mon, 06 Jan 2025 11:00:00 +0000

Are emotions something that happen to you, or are they bodily signals we interpret? Does everyone show emotions in the same way -- that is, are there particular markers of the face or the body that always mean anger, sadness, or joy? And what does this have to do with Charles Darwin, the truth about facial expressions, or the movie Inside Out? Join Eagleman with this week's guest, neuroscientist Lisa Feldman Barrett, author of hundreds of papers and "How Emotions are Made", for a deep dive into the truth about our feelings.

Ep39 rebroadcast "What is the future of AI relationships?"

Mon, 30 Dec 2024 11:00:00 +0000

Why are our brains so wired for love? Could you fall head over heels for a bot? Might your romantic partner be more satisfied with a 5% better version of you? How does an AI bot plug right into your deep neural circuitry, and what are the pros and cons? And what will it mean when humans you love don’t have to die, but can live on in your phone forever? Join Eagleman for a deep dive into relationships, their AI future, and what it all means for our species.

Ep10 rebroadcast "Why is it so hard to spot a counterfeit bill?"

Mon, 23 Dec 2024 11:00:00 +0000

What do charlatans have to understand about human perception? Why are you so bad at recognizing a real penny among fakes? What did Eagleman have to do with the redesign of the Euro, and why did he campaign to the European Central Bank that all their bills should be blank with a single hologram in the middle? In this episode, explore the crossroads of perception and deception. Brief appearance from special guest Adam Savage.

Ep85 "What is a Thought?"

Mon, 16 Dec 2024 11:00:00 +0000

Ep84 "Why do brains love music?"

Mon, 09 Dec 2024 11:00:00 +0000

How can we understand music's effect on human brains? Is music universal or does it rely on your experiences? How is music similar to a language? Can music be leveraged to help anxiety, dementia, or Parkinson's disease? What does any of this have to do with Stevie Wonder on the high hat, or the relationship between music and color? Join Eagleman with guest Daniel Levitin -- neuroscientist, musician, and author of This Is Your Brain on Music and I Heard There Was A Secret Chord.

Ep83 "Why Do Your 30 Trillion Cells Feel Like a Self?" Part 2

Mon, 02 Dec 2024 11:00:00 +0000

Does our sense of self emerge from our brain's skill at lumping things into unchanging categories? What can we learn watching a caterpillar brain transition to a butterfly brain? Can we think of a memory as a pattern that stays alive and has its own life? Does an ant colony have a sense of self? Join Eagleman and biologist Michael Levin at Tufts – one of the most energetic and original thinkers in the field -- to dive into new territories of the self.

Ep82 "Why Do Your 30 Trillion Cells Feel Like a Self?" Part 1

Mon, 25 Nov 2024 11:00:00 +0000

Ep 81 "How close are we to longevity?"

Mon, 18 Nov 2024 11:00:00 +0000

Two certainties are death and taxes; a third is that people will work hard to avoid them both. But why is it so difficult to extend our lifespan? We know how to do it in worms and mice; why is it tricky in humans? Why do so few companies study longevity? What does the near future hold? What would it be like if everyone lived a much longer life? Join Eagleman this week with longevity expert Martin Borch Jensen to discuss the hopes and challenges of longevity science.

Ep51 rebroadcast "Why do brains dream?"

Mon, 11 Nov 2024 11:00:00 +0000

Why do brains dream, and why are dreams so bizarre? Why doesn't your clock work in your dreams? And even though you spend much of your working day looking at your cell phone and computer – why do they almost never make appearances in your dream content? Is dream content the same across cultures and across time? Are dreams experienced in black & white, or in color? Are dreams the strange love child of brain plasticity and the rotation of the planet? What is the relationship between schizophrenia and dreaming? In the future, will we be able to read out the content of somebody's dream? Join Eagleman this week to learn why and how we spend a fraction of our sleep time locked in different realities, swimming in plots which aren't real but which compel us entirely nonetheless.

Ep48 rebroadcast "Why do brains become depressed?"

Mon, 04 Nov 2024 11:00:00 +0000

What is depression? Why are brains able to slip into it? Is depression detectable in animals? Do animals have options beyond fight or flight? And what does any of this have to do with measuring depression medications in city water supplies, reward pathways in the brain, the prevalence of tuberculosis, and zapping the head with magnetic stimulation? Join today's episode with David Eagleman and his guest -- psychiatrist Jonathan Downar -- for a deep dive into the brain science behind depression and what new solutions are on the horizon.

Ep31 rebroadcast "Why do we see #TheDress differently?"

Mon, 28 Oct 2024 10:00:00 +0000

Why can you hear some sounds two different ways, depending on which word you’re looking at? Why do electrical outlets sometimes look like a face? How can you have rich visual experience with your eyes closed? Are some crosswalk buttons fake? Why are some pictures interpretable only once you’ve been told what to look for? And although brains are often celebrated for their parallel processing, what should they really be celebrated for? Tune in to learn what happens when the raw facts of the world collide with your expectations.

Ep1 rebroadcast "Does time really slow down when you're in fear for your life?"

Mon, 21 Oct 2024 10:00:00 +0000

When he was a child, Eagleman fell off a roof and time seemed to run in slow motion. When he became a neuroscientist, he grew curious about the experience and collected hundreds of similar stories from others. But is it true that your brain can actually see in slow motion, like Neo in the Matrix? And how would you test that? Hear how he dropped volunteers from a tower to put the science to the test, and what the answer reveals about our perception, memory, and experience of the world.

Ep80 "What's it like to never forget?"

Mon, 14 Oct 2024 10:00:00 +0000

What would it be like to have a vastly better memory than you do now? What if you could remember what you were wearing on any day a dozen years ago? Or who you were with, what the conversation was, and whether it rained? Would it be a blessing or a curse? And if you’re forgetting a lot of your life, what might you do to better remember it? Join Eagleman with actress Marilu Henner, one of only dozens of people in the world diagnosed with highly superior autobiographical memory.

Ep79 "Does everyone have different mind's eyes, mind's ears, and mind's tongues?"

Mon, 07 Oct 2024 10:00:00 +0000

When you imagine something -- like the sun peeking over a mountain during an early morning rainstorm -- do you see it with rich visual detail, or instead with very little internal picture? In an earlier episode we tackled the spectrum of visual imagination, from hyperphantasia to aphantasia -- and in this episode we dive even deeper with guest Joel Pearson to surface the most surprising differences between people's internal lives. How does your experience differ from other people's, and how does your brain cobble together the skills you have to accomplish what you need?

Ep78 "Does your brain have one model of the world or thousands?"

Mon, 30 Sep 2024 10:00:00 +0000

Why do you see a unified image when you open your eyes, even though each part of your visual cortex has access to only a small part of the world?
What is special about the wrinkled outer layer of the brain, and what does that have to do with the way that you explore and come to understand the world? Are there new theories of how the brain operates? And in what ways is it doing something very different than current AI? Join Eagleman with guest Jeff Hawkins, theoretician and author of "A Thousand Brains" to dive into Hawkins' theory of many models running in the brain at once.

Ep77 "What is Life?"

Mon, 23 Sep 2024 10:00:00 +0000

How do you define what things are living and dead? You might look at a sprinting cheetah and say it's clearly alive, whereas a chunk of rock is not -- but where do we draw the line? What might we expect extraterrestrials to look like, and would we even have the capacity to recognize them? And what does any of this have to do with Frankenstein, ancient Greek philosophers, or the possibility of finding a cell phone on Mars? Join Eagleman with guest Sara Walker, theoretical physicist at Arizona State University and author of the book “Life as No One Knows It”.

Ep76 "How do you decide?" (Part 2)

Mon, 16 Sep 2024 10:00:00 +0000

Do brains time travel? What is a prediction error? What does any of this have to do with the 2008 crash of the economy, how we keep internal price tags, or a rational approach to drug addiction in society? Join Eagleman to learn how your 3-pound universe spends its whole existence nailing down choices.

Ep75 "How do you decide?" (Part 1)

Mon, 09 Sep 2024 10:00:00 +0000

When you make a decision about what food to order, what's happening in your brain? How do you clinch long-term decisions, like hitting the gym instead of doomscrolling? And what does any of this have to do with the ancient Greeks, alien hand syndrome, and constraining a president who wants to launch a nuclear bomb? Join Eagleman this week and next to discover how your brain weighs alternatives and nails down decisions.

Ep74 "Why do we laugh?"

Mon, 02 Sep 2024 10:00:00 +0000

From the brain’s point of view, what is humor? When something is funny, why do we breathe in and out rapidly? Do other animals laugh? Why do most jokes come in threes? What do mystery novelists, magicians, and comedians have in common? Could AI be truly funny? Join Eagleman this week to appreciate the tens of reasons and millions of years behind the tickling of your neural pathways.

Ep73 "How do we fool ourselves in the stock market?"

Mon, 26 Aug 2024 10:00:00 +0000

What does neuroscience have to do with investment, and what does that have to do with Isaac Newton, the Dutch East India company, Kodak, the way zebras herd, our emotions, and almost 200 cognitive biases? Join Eagleman with guest Mark Matson, whose new book The American Dream dives into the cognitive illusions we face when trying to make investments.

Ep72 "How do you put yourself in other people's shoes (and can AI do it)?"

Mon, 19 Aug 2024 10:00:00 +0000

You know that moment in the horror movie where the monster is coming closer, but the movie star doesn't see it? Why does that drive you crazy, and what does that teach us about brains? What is theory of mind, and why is it so important for everyone from poker players to conmen to stage magicians to novelists? Join us this week to dive into a fundamental skill of human brains -- and the question of whether current AI has any ability to simulate other people's minds.

Ep71 "Why do our memories drift? Part 2: Misremembering yourself"

Mon, 12 Aug 2024 10:00:00 +0000

Is your notion of yourself built on narrative that may or may not be accurate? If someone told you an entirely false story about yourself, could you come to believe it? What does that have to do with six people who spent over a decade in prison together for a crime they didn't commit? Join Eagleman for part 2 of some mind-blowing conclusions about your account of your own life.

Ep70 "Why do our memories drift? Part 1: The War of the Ghosts"

Mon, 05 Aug 2024 09:00:00 +0000

Ep69 "Why do you see something everywhere after you've seen it once?"

Mon, 29 Jul 2024 10:00:00 +0000

What does the Baader-Meinhof Group, a West German terrorist group from the 1970s, have to do with the front of your brain, attention, salience, and synchronicity? And why might you soon hear about the Baader-Meinhof Group again, not for political reasons, but for reasons to do with your own neural networks? Join Eagleman for a dive into how we take in the world around us -- and how we get fooled about the frequencies of events.

Ep68 "What if our brains worked a trillion times faster?"

Mon, 22 Jul 2024 10:00:00 +0000

Why are the majority of stock trades decided by algorithms at timescales we can scarcely conceive of? What is it like to have the speed and power of a computer, and to be dealing with slow humans? Why are movies compelling, given that they are just a series of photographs flashed rapidly? And what happens if we someday discover planets with creatures who operate on totally different time scales? Join Eagleman this week for a deep dive into speed: the speed at which we operate, the speed at which our machines operate, and what this all means for the future as the divergence grows larger.

Ep67 "How did human brains get runaway intelligence? "

Mon, 15 Jul 2024 10:00:00 +0000

We're the single species who composes symphonies, erects skyscrapers, builds computers, and regularly gets off the planet. But how did human intelligence evolve from our ancestors in the animal kingdom? And now that our species is scintillatingly shrewd, what does a knowledge of our road mean as we work to build intelligence artificially? Join Eagleman this week with Max Bennett, an especially smart human who illuminates a path through the 600 million year story of brain power in his book "A Brief History of Intelligence".

Ep66 "Why do brains love conspiracy theories?"

Mon, 08 Jul 2024 10:00:00 +0000

Why are conspiracy theories a natural output of the brain? What do they have to do with puzzle-solving, cognitive dissonance, ingroups/outgroups, and storytelling? If you hear an unlikely explanation for something, what are effective and ineffective ways to assess it? Join Eagleman to understand from the point of view of the brain why conspiracy theories have always been so pervasive in human societies.

Ep65 "Why do brains so easily fall for magic tricks?"

Mon, 01 Jul 2024 10:00:00 +0000

Did magicians discover tricks of the mind centuries before neuroscientists? Why can’t you see what they’re doing right in front of you? How do magicians steer your attention or appear to read your mind? Dive into the trapdoors of the human brain which allow the mind to get fooled. Join Eagleman with several guests: magician Robert Strong and cognitive neuroscientists Stephen Macknik and Susana Martinez-Conde.

Ep64 "Why do familiar things lose their shine (& what can we do about it)? "

Mon, 24 Jun 2024 10:00:00 +0000

If you could get a kiss from your favorite celebrity, how long would you want to wait before receiving it? And why do things seem less meaningful or joyful over time than they were at the beginning? What does any of this have to do with Netflix releasing all the episodes of a new show at once, or why companies come out with new and improved products every year, or why French revolutionaries wanted to make a week five days long instead of seven? Join Eagleman and cognitive neuroscientist Tali Sharot to find out why everything dulls with time and what we can do to recover the shine.

Ep63 "Why do brains love faces?"

Mon, 17 Jun 2024 10:00:00 +0000

Why do we have so much circuitry in the brain devoted to faces? Why does your electrical plug seem to look like a little face? Did aliens plant a signal for us on Mars, or are we looking at a quirk of our own brains? What is face blindness and what is a super recognizer? What does any of this have to do with looking at a magazine upside down, or why computer algorithms sometimes think a jack-o'-lantern is a person? Join Eagleman for a deep dive into something so fundamental as to be typically invisible.

Ep62 "Is it possible to rehumanize the enemy?"

Mon, 10 Jun 2024 10:00:00 +0000

The brain easily forms ingroups and outgroups – and shows different responses when viewing one or the other. At the extreme, the brain stops seeing outgroup members as people, but more like objects. But are there ways to rehumanize? And in this context, what do heroes look like? In this episode, Eagleman talks with two men -- Maoz Inon and Aziz Abu Sarah -- one Israeli and one Palestinian. The two men, full of pain and sorrow, are fighting. But they are fighting side by side. They are fighting to repair the future. Learn what peacebuilders are, how they function, and what this has to do with the neuroscience of dehumanization, ingroups, outgroups, and the possibilities -- both political and neural -- for rehumanization.

Ep61 "When should you (not) trust your intuition?"

Mon, 03 Jun 2024 10:00:00 +0000

Why do you sometimes feel that you trust this person but not that one -- for reasons you can't quite put your finger on? What signals does the brain vacuum up in your daily life, and what fraction of those does your conscious mind have access to? When does intuition steer us wrong? And what is the future of intuition, as we build new technologies to take the myriad signals racing around in the dark of our brains and bodies and bring them to light? Join Eagleman and his guest, cognitive neuroscientist Joel Pearson, to unpack when to trust and when to ignore the signals of intuition.

Ep60 "Can we think better by wrestling with conflicting ideas?"

Mon, 27 May 2024 10:00:00 +0000

Why do we believe our own truths so strongly? What is steel-manning, and why is it so important? What does any of this have to do with F. Scott Fitzgerald, John Keats, or the future of our society? This week's episode deals with polarization and what we might do about it. Join Eagleman and his guest Isaac Saul, who works to represent different points of view in his newsletter Tangle -- all in the name of the intellectual humility that can blossom from grappling with conflicting ideas.

Ep59 "Do you visualize like I do?"

Mon, 20 May 2024 10:00:00 +0000

How do brains picture things internally, and how might you and I imagine differently? How have recent discoveries completely changed the debate and the way we understand internal experience? What does this have to do with Disney's Fantasia, or Pixar's aphantasia? Strap in for some very wild surprises today about our internal experiences, with guest Ed Catmull, founder of Pixar Studios.

Ep58 "What do brains teach us about whether AI is creative?"

Mon, 13 May 2024 10:00:00 +0000

From a neuroscience point of view, what is creativity? How does it shine light on the current lawsuits over large language models and whether they produce anything fundamentally new... or are simply remixing the old? How do the arts expose something important about what's happening in the human brain? What do we know about the cultural evolution of ideas? And what does any of this have to do with how cell phones got their names, and why koala bears don’t write novels? Join Eagleman and his guest, composer Anthony Brandt, as they uncover the surprises about creativity.

Ep57 "When should new technologies enter the courtroom?"

Mon, 06 May 2024 10:00:00 +0000

Can we measure a lie from a blood pressure test, or pedophilia from a brain scan? And how should a judge decide whether the technology is good enough? What does this have to do with Ronald Reagan, or antisocial personality disorder, or how the television show CSI has impacted courtrooms? Today’s episode lives at the intersection of brains and the legal system. When are new neuroscience techniques allowed in courts, and when should they be?

Rebroadcast of Ep7 "Is AI truly intelligent? How would we know if it got there?"

Mon, 29 Apr 2024 10:00:00 +0000

David is taking his birthday week off and wanted to re-share this episode due to it's ongoing relevance.

Modern AI is blowing everyone’s mind. But is it intelligent like humans, or is it just playing impressive statistical games? Could AI reach or exceed our level of intelligence, and how would we know when it gets there? Traditional tests for intelligence (Turing test, Lovelace test, etc) have long been surpassed, so Eagleman proposes a new kind of test.

Ep56 "Why do we care so much about touch?"

Mon, 22 Apr 2024 10:00:00 +0000

Why does a cold pool feel warmer the second time you dip your toes in? Why does a safecracker run his fingers over sandpaper? Why do Mediterranean cultures touch each other more than Scandinavian cultures? Would it be great -- or not so great -- if you were unable to feel physical pain? Why does stubbing your toe have different sensations through time? And what does any of this have to do with cuddle puddles, NBA players bumping chests, or puppies sleeping in dog piles? Today’s episode is a love story about our sense of touch: what it is, how it works, and why it plays such a critical role in our lives.

Ep55 "Could a brain plugin instantly teach you to fly a helicopter?"

Mon, 15 Apr 2024 10:00:00 +0000

Could you instantaneously learn to fly a helicopter -- not by practicing, but instead by uploading instructions directly to your brain? What would society do if children no longer had to go to school? And what does any of this have to do with suntan booths, nanorobots, or what a cowboy on a hill is not able to see? Join Eagleman to learn about the possibility of modifying the microscopic structure of your brain and leapfrogging education. What are the possibilities, the caveats, and the unexpected complexities?

Ep54 "Where do you end and others begin?"

Mon, 08 Apr 2024 10:00:00 +0000

From the brain’s point of view, what is the self? How do 30 trillion cells come to feel like a single entity? Does the "self" of a blind person include the tip of her walking stick? How flexible is our sense of self? And what does any of this have to do with psychedelics, trauma, synchronized swimmers, religious rituals, cheerleaders, or why soldiers across time and place love to march in lockstep? Join Eagleman for this week's episode of surprises about how the brain computes the self.

Ep 53 " Can societies fight better? "

Mon, 01 Apr 2024 10:00:00 +0000

Presumably we're not going to solve the problem of conflict between groups of people -- but what would better conflict look like? And what does that have to do with brains, the spread of homo sapiens, social media recommender algorithms, tribalism, intellectual humility, or the Iroquois Native Americans? Join this week's episode with guest Jonathan Stray -- a conflict researcher -- for an episode about brain science, war, empathy, outgroups, and how we might do better.

Ep 52 "What is lucid dreaming?" (Sleeping & Dreaming Part 3)

Mon, 25 Mar 2024 10:00:00 +0000

Can you become conscious inside a dream? Can a researcher convey information to a dreamer, and can the dreamer find some way to answer back? Does 10 seconds inside a dream equal 10 seconds in real life? Could taking a drug inside a dream give you a placebo effect? Can you prompt your brain like a large language model? And if so, what would you pose to your unconscious brain? Join David Eagleman and guest Jonathan Berent to discover the what, why, and how of lucid dreaming.

Ep 51 "Why do brains dream?"

Mon, 18 Mar 2024 10:00:00 +0000

Ep50 "Why do we spend 1/3 of our lives asleep?" (Sleeping & Dreaming Part 1)

Mon, 11 Mar 2024 10:00:00 +0000

Why do we spend 1/3 of our lives in the strange doppelganger state of sleep? Can we die from a lack of sleep? How long is it possible to keep yourself awake (and why does the Guinness Book of World Records no longer track that)? Why are some people night owls and some morning larks? What does any of this have to do with lightless underground caves, or with the length of a day on Mars? Join this week's episode to learn everything you've ever wanted to know about sleep and what your brain is actually doing during this time. This is the first of a 3-parter: next week we'll dive into dreams, and the week after that into lucid dreams.

Ep49 "Can you read the brain to detect a lie?

Mon, 04 Mar 2024 11:00:00 +0000

Could you get convicted of a crime based on your brain activity? Are brain scan lie detectors accepted in court, or would that count as illegal search and seizure? And what does this have to do with your mouth getting dry, the orbits under your eyes getting hot, and your voice constricting when you deceive? Join Eagleman to dive into the fascinating topic of whether societies can use technology to figure out whether a person is telling the truth -- and under what circumstances we would even want to go there.

Ep48 "Why do brains become depressed?"

Mon, 26 Feb 2024 11:00:00 +0000

Ep47 "Wheels rotate backwards on TV, but do they ever in real life?"

Mon, 19 Feb 2024 11:00:00 +0000

Do our visual systems see in frames like a movie camera or instead analyze the world continuously? Why do you see multiple hands when you clap under yellow street lamps? How did Hollywood launch from the question of whether all four legs of a galloping horse come off the ground at once? And what is the very surprising thing that happens if you stare at your ceiling fan for a long time while it turns? This week’s episode is about visual perception -- and a series of eye-opening revelations about how the brain takes in information from the world.

Ep46 "Who says you're dead?"

Mon, 12 Feb 2024 11:00:00 +0000

Can a person be declared legally dead even though he is very much alive? In December of 2010, why did a number of families choose to pull their loved ones off life support just before the new year? How do doctors decide when you've died, and how is it different from how lawyers decide? How is death a process rather than an event? What does any of this have to do with getting buried alive, your family's religious beliefs, or whether a head stays alive after the guillotine? Join Eagleman and guest Jacob Appel, an emergency room psychiatrist and head of ethics, for an episode about the science and the questions about death -- including who's domain it is to call it, and where this is all heading.

Ep45 "Why did a man shoot himself after hearing the lottery numbers?" (Time Traveling: Part 3)

Mon, 05 Feb 2024 11:00:00 +0000

Who is the most disappointed medalist at the Olympics? How do brains simulate what might have been? How can you get your kid to wear a jacket in the cold? What if you had to face more successful versions of yourself? And what does any of this have to do with why menus should be shorter, why empires divide, and why you should always put yourself in the shoes of future people? Join Eagleman to learn the capstone secrets of mental time travel, and what these have to do with the emotions of regret and relief.

Ep44 "Why can't you tickle yourself?" (Time Traveling Part 2)

Mon, 29 Jan 2024 17:18:15 +0000

Why are people who can't remember their past also unable to picture their future? Why do we get so anxious about the world changing around us? What should you advise the president if we find ourselves at war with extraterrestrials? And what does this have to do with Wayne Gretzky, or the Greek goddess of memory, or hitting a bottle to get ketchup onto your French fries? Join this week's episode to find out about one of the most important things brains do: simulations of possible futures.

Ep43 "How do we remember?" (Time Traveling Part 1)

Mon, 22 Jan 2024 11:00:00 +0000

How do billions of neurons store your home address, your ability to ride a bike, and the history of your life? How does memory work in the brain, and how is it different from the way a computer stores information? And what does any of this have to do with the Happy Birthday song, squirrels hiding acorns, bards memorizing epics, or people who cannot forget any of the events of their life? Join Eagleman to learn how and why your brain continually time travels to previous moments.

Ep42 "Is there any such thing as true news?" (Truth Part 3: Artificial Intelligence)

Mon, 15 Jan 2024 11:00:00 +0000

What role will AI play in the future of fake news and misinformation? What does this have to do with our brains’ internal models, with voice passwords, and with what Eagleman calls "the tall intelligence problem"? And why does he believe that these earliest days of AI are its golden age, and we are quickly heading for a balkanization? Join for today's episode about truth, misinformation, and artificial intelligence.

Ep41 "Is there any such thing as true news?" (Truth Part 2: the Internet)

Mon, 08 Jan 2024 17:50:43 +0000

What is the future of misinformation on the internet? Is it possible that the invention of the internet has improved access to truth? What does any of this have to do with the Oxford English Dictionary, Soviet agriculture, liberation technology, Kenyan elections, Barbra Streisand's house, and Twitter revolutions? Join Eagleman for a surprising foray into the thorny forest of truth in the age of the internet.

Ep40 "Is there any such thing as true news?" (Truth Part1)

Mon, 01 Jan 2024 11:00:00 +0000

We all worry about fake news. But is misinformation and disinformation really new? Join Eagleman for a deep dive into the past, present, and future of truth. Why do cameras not tell us what we think they do? What should we not forget about pamphleteering? And what does this have to do with agriculture in the USSR, or book banning in America, or dog whistles, or apps that only tell facts? And why is it so hard to understand the viewpoints of millions of brains at once? This week's episode is the first of a three-parter -- and today we tackle truth in the media.

Ep39 "What is the future of AI relationships?"

Mon, 18 Dec 2023 11:00:00 +0000

Ep38 "Why is it hard to teach an old brain new tricks?"

Mon, 11 Dec 2023 11:00:00 +0000

Is it always harder to teach an old dog new tricks? Why is an older person slower to learn a new language but able to learn new faces easily? Why does Arnold Schwartzenegger have an accent but Mila Kunis doesn’t, even though neither spoke English as a child? Why is there a correlation between how tall a person is and how much salary they're likely to earn? What would it mean to say that you are born as many people but die as a single one? This week's episode dives into surprises about brain plasticity and why your flexibility changes throughout your lifetime.

Ep37 "What is Insanity?" Part 2

Mon, 04 Dec 2023 11:00:00 +0000

What does the insanity defense mean in a court of law? And is there such a thing as temporary insanity? Is the twinkie defense a real thing? Can someone use premenstrual syndrome as a defense? And what does the legal wrestling around insanity tell us about the differences between brains: yours and other people’s, or even yours one day and yours the next day? How does law comport with science, and how are they sometimes like two people with quite different ways of looking at the world? Join to find out what happened to Andrea Yates, how the legal system deals with mental illness, and so much more.

Inner Cosmos Inbox 2

Thu, 30 Nov 2023 11:00:00 +0000

Eagleman answers listeners questions.

Ep36 "What is Insanity?" Part 1

Mon, 27 Nov 2023 11:00:00 +0000

What is the insanity defense? Are some people’s brains so different that it makes sense to use a different legal category? How does a legal system decide where the dividing line is? How are science and law strange bedfellows? Join us for the first of two episodes about the insanity defense: where it comes from, where it's going, and why it is so difficult to decide where to draw our societal lines.

Ep35 "What sticks in your brain and what doesn’t? "

Mon, 20 Nov 2023 11:00:00 +0000

f you look at a brain, how can you immediately tell if it belongs to a piano player or a violinist? How can a dog learn how to walk on its rear legs? And what does this have to do with expertise, or the good news about the brains of digital natives, or how governments respond to change just like brains do? While we all like to talk about brain plasticity, the truth is that most of what happens in your life makes no meaningful change to your brain. So what’s the difference between the stuff that sticks and the stuff that doesn’t?

Ep34 "What is intelligence?"

Mon, 13 Nov 2023 11:00:00 +0000

What would it be like to have a much lower or higher IQ than you currently have -- for example, to be a squirrel or an advanced space alien? This week's episode is about intelligence. What is it and what is its history and future? Join Eagleman on a whistle-stop tour of several schools of thought about what intelligence might mean in the brain.

Ep33 "Why do they start sprinters with a bang instead of a flash?"

Mon, 06 Nov 2023 11:00:00 +0000

Why do they use a gun at the Olympics? And why can you get off the blocks after the bang but still be disqualified for jumping the gun? Few things are as bizarre as our time perception. From sprinters to basketball players, from Kubla Khan to Oppenheimer, from television broadcasting to hallucinations, Eagleman unmasks illusions of time that surround us. Why does the brain work so hard to pull off editing tricks? And what does this tell us about our perception of reality?

Ep32 "Is death reversible?"

Mon, 30 Oct 2023 10:00:00 +0000

Does life end inevitably or instead only because we don’t understand biology well enough yet? Today’s episode is about understanding what happens when your molecular cycles grind to a halt... and whether there's anything we can do to hit control-Z. Join Eagleman and his guest Dr. Zvonimir Vrselja to dive into the weird possibility of understanding cells well enough to reverse death.

Inner Cosmos Inbox 1

Wed, 25 Oct 2023 10:00:00 +0000

Eagleman answers listeners questions.

Ep31 "Why do we see #TheDress differently?"

Mon, 23 Oct 2023 10:00:00 +0000

Ep30 "What does it mean to know thyself in the age of neuroscience?" Part 2

Mon, 16 Oct 2023 10:00:00 +0000

Can we explain our rich experience of life only by studying the molecules that compose us? How is the color of your passport related to your chances of presenting with schizophrenia? Males are more predisposed to commit crime, so why don’t all males commit crime? And what does any of this have to do with traffic jams, why Seinfeld is funny, and how we’re ever going to come to know ourselves from studying biology? Join Eagleman to talk about levels of understanding, what a meaningful explanation would look like, and the possibility that we are not near the conclusion of science's journey, but instead near the beginning.

Ep29 "What does it mean to know thyself?" Part 1

Mon, 09 Oct 2023 10:00:00 +0000

Did Joan of Arc turn the tide of the 100 Years War as the result of a brain disorder? Would you appreciate Taylor Swift if you only had an internal camera to watch her vocal chords? What do almost all drugs of abuse have in common? How can the tiny molecules of rabies virus control your behavior? Join Eagleman on a two-part deep dive into the fundamental question of how biological insights can shed light on the ancient question of who we are.

Ep28 "Does your language shape your thinking?"

Mon, 02 Oct 2023 10:00:00 +0000

Are there really dozens of words for snow in northern cultures? What did the movie Arrival have to do with language and cognition? Why are Russians better than Americans at distinguishing certain shades of blue? And what does any of this have to do with space, time, gender, and how your language influences your thought? Join Eagleman and his guest, cognitive scientist Lera Boroditsky, as they take a deep dive into the intersection of words and understanding.

Ep27 "Can we read brains at an airport to know who's going to bomb a plane?"

Mon, 25 Sep 2023 10:00:00 +0000

Can your thoughts be read with neurotechnology? When is measuring the brain like reading the mind? How close or far are we from being able to know if you're thinking about some particular thing you did or intend to do? What's hype and what's real? Join Eagleman for a deep dive into mind reading: what it means, where we are now, and whether your thoughts could ever be readable with new technologies.

Ep26 "Why do people dislike moist more than moose, but not as much as merts?"

Mon, 18 Sep 2023 10:00:00 +0000

We all know people who hate the word "moist". But why are they fine with synonyms such as "damp" or "wet"? What’s going on in their brains, and what does this have to do with synesthesia, autism, shapes, slacks, and sound probabilities? Join this week's episode as Eagleman leads us into the new and wild world of word aversion.

Ep25 "Why are we so easy to fool?"

Mon, 11 Sep 2023 10:00:00 +0000

Why are we humans so easily deceived? What are the tricks of the trade, and how can we train ourselves to be more aware of them? What does all this have to do with Theranos, forged letters, and the shell game? Although you presumably wouldn't cheat a stranger out of all her money, there are people who would -- so how can we beef up our immunity against deception? Join Eagleman with guests Christopher Chabris and Dan Simons to discuss their new book, Nobody's Fool.

Ep24 "What does drug withdrawal have in common with heartbreak?"

Mon, 04 Sep 2023 10:00:00 +0000

Why do you still feel the waves after getting off a boat? Why does the wall seem to come at you faster after you step off the treadmill? Why do the rocks seem to move upward after you stare at a waterfall? Why did people in the 1980s think their book pages had some red color in them… but no one thought that before or after the 80s? And what does any of this have to do with drugs, heartbreak, yellow sunglasses, or Aristotle watching a horse stuck in a river? Join Eagleman to understand how the brain constantly readjusts its circuitry to best read the world, and what it means for our (sometimes strange) perceptions of what's out there.

Ep23 "How can we learn to speak alien?"

Mon, 28 Aug 2023 10:00:00 +0000

If we meet extraterrestrials someday, how will we figure out what they're saying? We currently face this problem right here at home: we have 2 million species of animals on our planet... and we have no Google Translate for any of them. We’re not having conversations with (or listening to podcasts by) anyone but ourselves. Join Eagleman and his guest Aza Raskin to see the glimmer of a pathway that might get us to animal translation, and relatively soon.

Ep22 "What do we find beautiful?"

Mon, 21 Aug 2023 10:00:00 +0000

Why do briefly glimpsed people appear to be more attractive? Why did portrait photographers put Vaseline on their lenses, and what does that have to do with Instagram filters? Why are thirsty people more likely to perceive something as transparent? And what does any of that have to do with mating, optimal decision making, puberty, frogs, and movie stars? In this episode, Eagleman gets us to view the familiar as strange as we examine beauty, instincts, and what drives us.

Ep21 "How far would you follow authority?"

Mon, 14 Aug 2023 10:00:00 +0000

Would you torture someone if you were commanded by an authority figure? To what degree are your decisions contextual, and what does this have to do with matching the length of a line, the Iroquois Native Americans, the banality of evil, soldiers posing with dead bodies of their enemies, propaganda, giving shocks to a stranger, or how we should educate our children? Join Eagleman for part 2 of the exploration into brains, dehumanization, and what we can do to improve our possible future.

Ep20 "Why does your brain care more about some people than others?"

Mon, 07 Aug 2023 10:00:00 +0000

Why do we so naturally form ingroups and outgroups? And what does that have to do with evolution, monkeys, Greeks, psychopaths, Syndrome E, and propaganda posters? Join Eagleman to learn why our brains are so wired for tribalism, what the consequences are for the world, and how a bit of knowledge goes a long way to making us more immune to propaganda.

Ep19 "How far can you trust your memory?"

Mon, 31 Jul 2023 10:00:00 +0000

How good is your memory, really? Why do we feel so certain about our memory, even while it is so suspect? Can something told to you after an event change your memory of the event? Why is it so hard to reconstruct a face? Is there a relationship between confidence and accuracy? How is your ability to remember a scene changed if there's a gun pointed at you? Join Eagleman to find out why eyewitness testimony is the most questionable technology we allow in courts.

Ep18 "Could you upload your brain to live forever?"

Mon, 24 Jul 2023 10:00:00 +0000

How would we know if we were living in a simulation? What if you were a butterfly having a dream it was a human? What does any of this have to do with John Lennon, or Renee Descartes, or freezing yourself in a vat of liquid nitrogen? How will we eventually solve the problem that human bodies can’t do space travel? Join Eagleman for a wild ride into the strange possibility of making brains immortal.

Ep17 "What is consciousness?"

Mon, 17 Jul 2023 10:00:00 +0000

How do your billions of tiny brain cells build consciousness as they chatter away with electrical spikes and chemical signals? And why is your laptop, with its sophisticated algorithms and billions of parts, presumably not conscious? Could other large systems like a city become conscious? And what does this have to do with ant hills, blue birds, or your memory of your first kiss? Join Eagleman on a journey into one of the central mysteries of neuroscience: why we have awareness.

Ep16 "Why is everyone who disagrees with you misinformed?"

Mon, 10 Jul 2023 07:00:00 +0000

Why is there so much polarization, and what does this have to do with neuroscience? Why do people on all sides of the political spectrum feel that if they could shout loudly enough in all caps on Twitter, everyone would come to see they’re right? And what does any of this have to do with literature, genetics, nobleman Lord Gordon, bumperstickers, visualization, or the Iroquois Native Americans? Join as Eagleman draws from distant fields to show why we always feel so certain we know the truth.

Ep15 "What should happen when someone with a brain tumor breaks the law?"

Mon, 03 Jul 2023 10:00:00 +0000

When does neuroscience overlap with the legal system? Do we have free will or don't we? Did changes in Charles Whitman's brain have something to do with him becoming a mass shooter? Why was the heir to the Gucci fashion fortune killed by his wife? Join Eagleman on a wild journey to understand what happens when the study of the brain and the law end up in the same courtroom.

Ep14 "Why do we have so little access to what’s happening under the hood?"

Mon, 26 Jun 2023 10:00:00 +0000

Who is doing the choosing when you make a choice? Is there someone in your head but it’s not you? What is a chicken-sexer, and what do they have to do with British plane spotters during WWII? Do we have free will or don’t we? Dive in to discover the ways in which you typically operate with no conscious access to your behaviors.

Ep13 "Will you perceive the event that kills you?"

Mon, 19 Jun 2023 10:00:00 +0000

How far in the past do you live? Why are live television shows not actually live? What does any of this have to do with nuclear bombs, car accidents, plane crashes, volcanos, or the last episode of the Sopranos? Join Eagleman in a mind-bending dive into the neuroscience of time and what it could mean for your last moment.

Ep12 "Can we create new senses for humans?"

Mon, 12 Jun 2023 10:00:00 +0000

Can a blind person come to see through her tongue? What would it be like to smell with the nose of a dog? How can we perceive streams of information that are normally invisible to us? And what does any of this have to do with pilots or Westworld or tinnitus or friendly fire or a wristband with vibratory motors? We don't detect most of the action going on in the world around us... and today we'll explore how technology might change that.

Ep11 "What does dreaming have to do with the rotation of the planet?"

Mon, 05 Jun 2023 10:00:00 +0000

Why are some of the best musicians blind? Can blind people learn how to echolocate, like a bat? What do your nightly dreams have to do with the rotation of the planet? Once we find alien life on other planets, should we expect that aliens have dreams at night? Find out why dreaming might be the strange lovechild of brain plasticity.

Ep10 "Why is it so hard to spot a counterfeit bill?"

Mon, 29 May 2023 10:00:00 +0000

Ep9 "What does eating that cookie have to do with the hero of the Trojan war?"

Mon, 22 May 2023 10:00:00 +0000

We all have goals, and we all face temptations that get in the way. So what's happening in the brain when we act in a manner that isn't in accordance with who we want to be? Computers don’t have these problems, but being human can be tough. In the previous two episodes we exposed the rivaling networks battling it out under the surface. Today we’re going to talk about the gap between what you intend to do and what you actually do when temptation is there.

Ep8 "How does your brain decide what to buy?"

Mon, 15 May 2023 10:00:00 +0000

What’s happening when you stand in the supermarket aisle and stare at the shelf full of options? It may not look like there’s much going on from the outside, but inside there’s a war of networks raging. How is your brain's decision-making influenced by price, emotions, and your group of friends? How would you choose between a nice candle and a chocolate bar in the shape of a computer keyboard? And what does any of this have to do with Starbucks or Tiger Woods or Burger King?

Ep7 "Is AI truly intelligent? How would we know if it got there?"

Mon, 08 May 2023 10:00:00 +0000

Ep6 "What will AI mean for artists?"

Tue, 02 May 2023 00:50:00 +0000

Will writers, artists, and musicians find themselves unemployed by AI? What are the new capabilities we’re seeing and what does it all mean for human creativity? And what does this have to do with diamonds, Westworld, effort, Frankenstein, photography, Beethoven, and the Stark family in Game of Thrones?

Ep5 "How is your brain like a team of rivals?"

Mon, 24 Apr 2023 10:00:00 +0000

Would you kill one person to save the lives of five others? Why do you find yourself on the horns of a dilemma when someone offers you a chocolate cake? How can you believe different things at once? Find out what's running under the hood in this first episode of a three-parter about our decision making -- and how a little knowledge of neuroscience can allow us to make better decisions.

Ep4 "Do people experience different realities?"

Mon, 17 Apr 2023 10:00:00 +0000

Do you see blue the same way I do on the inside? Why do some people think the northern lights make noise? Why do you think the low note on the piano is larger, and the high note brighter? Join Eagleman on a wild ride into the world of synesthesia, a topic his neuroscience laboratory has pioneered for years.

Ep3 "Could animals learn to speak human?"

Mon, 10 Apr 2023 10:00:00 +0000

What is intelligence? Why don’t gophers write novels? Why didn't crows invent the internet? And what does any of this have to do with brain algorithms, finding aliens on earth, and why World War 5 could involve species besides Homo sapiens?

Ep2 "What would you do with robotic wings? (or How to get a better body)"

Mon, 03 Apr 2023 10:00:00 +0000

How is it possible for a dog to become a champion surfer? Why does the world’s best archer have no arms? Why might someone come to believe that her leg doesn’t belong to her? How can we build robots that simply figure themselves out? In this episode, Eagleman unmasks mysteries about the brain's shocking flexibility -- revealing how it comes to drive whatever body it finds itself in, how it determines what the "self" is, and what this tells us about our future as humans.

Ep1 "Does time really slow down when you're in fear for your life?"

Mon, 27 Mar 2023 10:00:00 +0000

Introducing: Inner Cosmos with David Eagleman

Mon, 20 Mar 2023 05:02:00 +0000

Neuroscientist and author David Eagleman discusses how our brain interprets the world and what that means for us. Through storytelling, research, interviews, and experiments, David Eagleman tackles wild questions that illuminate new facets of our lives and our realities.