Inner Cosmos with David Eagleman
iHeartPodcasts 170 episodes Nov 9, 2026
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.
Episodes
Ep176 "Where Does Your Mind End and AI Begin?" with Steven Johnson
When a machine can remember your intellectual life and propose the next connection, is it still a tool or has it become part of the mind doing the thinking? In other words, who gets credit when AI supplies the crucial connection for an idea? Join Eagleman with Steven Johnson, historian of innovation & one of the creators of Gemini Notebook, as they wrestle with what happens when computers
Re-Release " What is Color? Part 2: Why royals wear purple"
This week we reach into the archive for one of the most popular episodes of Inner Cosmos. 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 hist
Re-Release "What is color? Part 1: Why hunters wear orange"
This week we reach into the archive for one of the most popular episodes of Inner Cosmos. 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 w
Ep175 Who Are You When Your Brain Changes? with Robert Kolker
Is your personality written into the circuitry of your brain? With brain disease, can someone lose who they are without realizing it? What happens when the person changing is the only one who can't see it? What does it mean to love someone whose personality has become unrecognizable? If you carried a genetic mutation that would alter your brain in the near future, would you want to know? Join Eagl
Ep174 "Can Evolution Teach AI?" with Athena Aktipis
How do you get trillions of cells to collaborate as the single organism that we call you? Does that kind of cooperation create opportunities for hijacking -- for example, is cancer a form of "cellular cheating"? Can we take the lessons learned from biology and apply them to understanding politics? And what do models of cooperation tell us about building and living with AI? Join Eagleman
Re-Release "Why Do Brains Dream"
This week we reach into the archive for one of the most popular episodes of Inner Cosmos. 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 acro
Ep173 "Why Do We Have Emotions?" with Robert Kurzban
What's a feeling for? What is jealousy measuring and motivating? Why do both awe and grief slow us down? What happens when ancient emotions meet dating apps and like buttons? Does the intensity of a feeling decide which part of you takes control? Can understanding an emotion loosen its grip? Today we sit down with evolutionary psychologist Robert Kurzban to understand the logic behind the our
Ep172 "Can You Quantify Yourself to Improve Health?" with Michael Snyder
Can your smartwatch detect subtle changes before you feel them? Might a continuous glucose monitor pick up on things you didn’t know about yourself? Could a drop of blood map your future health? Why does your personal baseline matter more than a population average? Could AI decode the massive signaling networks of your body? Does seeing your own data change your behavior? Join Eagleman with&
Ep171 "Why Do Some Urges Feel Irresistible?" with Paige Gordon
Why do two people facing the same choice feel different urges? How much effort hides behind resisting a cookie? Why can the brain keep wanting something long after pleasure fades? Can a molecule crank down the volume of your internal radio? Does a biological understanding of behavior reduce responsibility, or does it deepen compassion? And how would your life change if your loudest urge went quiet
Ep 170 "Will Mars Create a New Species of Human?" with Scott Solomon
What happens when we start birthing babies on Mars? Might a Martian human become unable to survive on Earth because of differences in microbes and gravity? How much of your body is shaped by the details of this planet? Will radiation accelerate human evolution on Mars? Could living on Mars eventually create a new species of human? Could Mars change the way humans dream? Would a Martian child find
Ep169 "What Is Claude Thinking But Not Saying?" with Jack Lindsey
Is AI thinking things it never says aloud? How would we know if a large language model were having a subjective experience? Is there a way to read the 'thoughts' of an LLM? Human brains seem to have a 'global workspace' -- what would it mean if we discovered that AI has something similar? Can you reach inside an LLM to change one of its 'thoughts'? Join Eagleman with Anthropic interpretabilit
Ep168 "Will it Someday Make Sense to Elect an AI President?"
Could there be a better form of government than the one we have now? As we enter an AI-powered world, when might we choose an AI leader? Will your grandchildren ever vote for a human president, who comes with a political party & the weaknesses of a human, or will they vote for a system that has a jaw-dropping capacity to extract patterns from vast rivers of data, simulate millions of possible
Ep167 "What Happens With Stone Age Brains + Godlike Tools?" with Steven Kotler
What happens when old brain circuitry collides with modern tech? Are we heading into an age of abundance, and can abundance create its own psychological problems? Do we need friction in our lives to become better humans? Could curiosity become the most important survival skill of the twenty-first century? What happens to your biological neural networks when artificial neural networks do your think
Ep166 "Could the Next Brain Interface Get Sprayed Up Your Nose?" with Tetiana Aleksandrova & Scott Meek
A brain computer interface (BCI) is any technology that allows you to connect your 3 pounds of wetware to a computer. But instead of implanting electrodes via neurosurgery, might the next revolution in BCIs come from something very small, like nanoparticles? Would this allow us to spy on millions (or billions) of neurons talking at once -- and could we do so without opening the
Ep165 "What's a Doom Loop & How Do You Escape It?" with Jonathan Downar
Have you ever spent hours with a thought cycling around in your head? What happens when the brain continuously worries, craves, or replays something without finding the exit? Where does the feeling of being “done” come from? Might depression, addiction, OCD, and PTSD all share the same problem? Is mental freedom just the ability to change states? Join Eagleman with neuroscientist
Ep164 "Why Do We Act Differently Around Different People?" With Claude Steele
Does your identity and performance change in different situations? What does this have to do with wondering how you’re being judged? What if polarization grows from uncertainty more than hatred? Might social uncertainty be more common than prejudice? Why do strangers become enemies so easily? Can we engineer more trust into society? Today Eagleman sits down with Stanford social psycholo
Ep163 "How Quickly Does AI Become Smarter Than Humanity?" with Ben Goertzel
What is artificial general intelligence (AGI) and how close are we to getting there? What defines the next step, called artificial superintelligence (ASI), and why might the gap between those two be so dangerous? When machines become smarter than us, what roles are left for humanity? Should we think of AI as software, or as something we’re raising like a child? Will tomorrow’s AI
Ep162 "What Does Medicine Look Like in Ten Years?" with Jeanne Loring
For all of medical history, we’ve tried to persuade sick cells to behave better. What if instead we just swapped them out? Can we insert new brain cells grown from your own skin cells? And what does any of this have to do with sending one’s own cells into space, or rescuing animals on the very brink of extinction? Today we talk with stem cell biologist Jeanne Loring about the
Ep161 "What Do Ancient Brains and Future AIs Have in Common?" with Read Montague
What do honeybee brains have in common with human brains -- and with the AI that beat the world's best Go player? What simple algorithm has been hiding inside brains for 100s of millions of years? When babies throw food from a high chair again and again, are they being mischievous or are they running physics experiments? And what does any of this have to do with whether dopamine is more than a ple
Ep160 "Do You Really Have a Self?" with Sam Harris
re you the author of your thoughts or just their witness? Do we simply watch our thoughts like we watch unfolding dream plots? What if the most familiar thing you experience — yourself — isn’t really there? If that’s the case, why does the experience of the self feel so solid that it often takes a lifetime to notice something strange? Why would evolution invent the feeling
Ep159 "If Your Brain Changed Slightly, Would You Still Be You?" with Masud Husain
Could a tiny injury to your brain change your personality? If your friends didn’t know something had happened in your brain, would they just think you're choosing to act strangely? What if the self is nothing but a fragile coalition of neural processes? Join Eagleman today with Masud Husain, a neurologist and neuroscientist at Oxford, to explore fascinating case studies about how change
Ep158 "What do babies, animals, and AI have in common?" with Melanie Mitchell
When AI gets the right answer, how do we know it got there the right way? Why do we assume that fluent language means intelligence? What do infants and chatbots have in common? What do AI’s mistakes teach us about our own minds? And what does any of this have to do with Frankenstein’s creature, why some people wear a stop sign on their T-shirt, or smiling monkeys? Join Eagleman today w
Ep157 "Where Did the Letter "A" Come From?" with Danny Bate
How can we use 26 symbols to capture everything in the cosmos of human experience? Where do our written symbols in English come from? What ancient ghosts are still hiding inside the letters you read every day? Does learning to read reconfigure the circuitry of your brain? Does dyslexia reveal how unnatural reading really is? And could AI freeze the evolution of language for the first time in histo
Ep156 What Do We Learn About AI by Dancing with Robots? with Catie Cuan
Why do we read so much into how a robot moves, and what does that tell us about human brains? Why did our history make us so sensitive to movement? Why do we trust graceful motion? Should we make a robot 'look' at an object it’s about to pick up, even if it doesn’t need to? Is movement the original form of animal intelligence? Join Eagleman with guest Catie Cuan, a roboticist, dancer,
Ep155 "Why Can’t Some People Stop Thinking Certain Thoughts?" with Jon Hershfield
Why do brains generate strange thoughts sometimes? And why do some brains refuse to let go of those thoughts? Today we'll talk about Obsessive Compulsive Disorder (OCD) with expert Jon Hershfield, getting a view from the inside and the outside. Why do some people lock the door but go back repeatedly to check it, and still have a feeling of uncertainty that it’s locked? Why do some people was
Ep154 "Can a Depressed Brain Find Its Way Out?" with Jon Nelson
What if your brain got stuck in sadness and never reset? What does it feel like when joy disappears completely? Can a person love their family deeply and still want to die? What do you do when treatment after treatment fails? What if the difference between despair and recovery is electrical? How can we better recognize invisible struggles in those around us? Join Eagleman with guest Jon Nelson, a
Ep153 Can You Unlearn Anxiety? with Judson Brewer
Week 2 of Mental Health Awareness month: Anxiety is close to everyone’s experience, either because you've had it or someone close to you has. Does your brain accidentally teach itself to stay anxious by looping on the same fears? Is anxiety helping you perform better, or does it make everything harder? Is it possible to unlearn worry the same way you learned it? Join Eagleman with Dr. Jud Br
Ep152 "How do you survive your own thoughts?" with Jewel
What do you do when your own mind stops feeling safe? How does a person sing on stage while panicking inside? How do you catch your thoughts before they catch you? Join Eagleman with singer/songwriter Jewel to talk about mental health: the battles she’s lived, the wisdom she’s earned, and the lives she’s helping shape. This episode kicks off Mental Health Awareness month, wh
Ep151 "Can One Be a Rational Optimist About the World?" with Matt Ridley
Why do we generally feel like the world is getting worse, when by almost all measures it’s getting better? How do ideas "have sex”, and why does that matter for innovation? Why do brains tend to systematically misread the future? What if optimism is a more rational stance than pessimism? If innovation isn’t primarily about lone geniuses, what’s it really about? Join Eaglema
Ep150 "Can We Engineer Dreams?" with Adam Haar Horowitz
Can you influence what you dream about tonight? Are you spending years of your life in a world you don’t recall? Can nightmares be manipulated as a therapy? Are dreams sometimes predictive of changes in your health before you become aware of them? Join Eagleman with Adam Haar Horowitz, a neuroscientist and dream engineer who spends his working days trying to help people during their night ti
Ep149 "What makes a brain grow up resilient?" with David Sussillo
How can a brain grow up in chaos but find its way to order? There are many ways to have a bad childhood, but why do some children break while others bend and keep going? How much of who you are is written in your genes & how much is sculpted by your environment? How many versions of you were possible & why did this one win out? Join Eagleman today with David Sussillo, who was abandoned as
Ep148 "How can we improve political dialog?" with Saul Perlmutter
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 abo
Ep147 "Can we engineer human thought?" with Tom Griffiths
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
Ep146 "Who Counts as Human in Your Mind?" with Lasana Harris
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
Ep145 Why do we compulsively click on ragebait? with Angele Christin
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
Ep144 "How do things last?" Part 2: Millennia with Alexander Rose
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
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
Ep142 "Do breakthroughs require rule-breakers?" with Eric Weinstein
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 t
Ep141 "What do brains and weather systems have in common?" with Nicole Rust
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
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
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
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
Ep137 "Do cures ever create the next crisis?" with Thomas Goetz
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 dru
Ep136 "Why do we care about mattering?" with Rebecca Goldstein
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 philos
Ep135: What does neuroscience mean by hypnosis? with David Spiegel
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
Ep82 Re Broadcast "Why Do Your 30 Trillion Cells Feel Like a Self?" Part 1
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 thou
Ep70 Re Broadcast "Why do our memories drift? Part 1: The War of the Ghosts"
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 yo
Ep134 "What do brains teach us about morality?" with Joshua Greene
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 decide
Ep133 "Why do people hold misbeliefs?" with Dan Ariely
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 unbelieva
Ep132 "What will AI mean for the economy?" with Andrew Mayne
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-
Ep131 "What do brains tell us about politics?" Part 2: Rehumanization
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
Ep130 "What do brains tell us about politics?" Part 1: Polarization
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
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 tal
Ep128 "Would space aliens see the world as we do?" with Daniel Whiteson
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 physi
EP127 "What happens when we marry brains to machines?" with Sergey Stavisky
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 tho
Ep126 "Does science fiction shape reality?" with Bethanie Maples
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
Ep125 "Why do brains need friends?" (with Ben Rein)
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 Fr
Ep124 "Why don't we notice gaps in time?"
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
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 se
Ep122 "Why do we so rarely say what we mean?" (with Steven Pinker)
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
Ep121 "What’s the secret to intelligence (in brains and AI)?" with Ramesh Raskar
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?"
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
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
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?
Ep117 "What does brain science have to do with free speech? (with Greg Lukianoff)" (with Greg Lukianoff)
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
Ep116 " What is Color? Part 2: Why royals wear purple"
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"
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?"
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, soci
Ep113 "What's special about inventors?" (with Pablos Holman)
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)
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 wr
Ep111 "Might we be surrounded with undetected minds?" (with Michael Levin)
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 m
Ep110 "Is consciousness related to quantum physics?" (with Roger Penrose and Stuart Hameroff)
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
Ep85 rebroadcast - "What is a Thought?"
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 thi
Ep109 "Are you one mind or many drives?" with Jordan Peterson
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
Ep108 "Can brains increase their happiness?" (with Bruce Hood)
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)
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 Jos
Ep106 "What happens when brains watch movies?" (with Jeffrey Zacks)
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
Ep105 "What if AI is not actually intelligent?" (with Alison Gopnik)
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
Ep104 "What is your internal world really like?" (with Russell Hurlburt)
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 conversati
Ep103 "Could you ever know what it’s like to be someone else?" (Part 2)
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
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