Inner Cosmos with David Eagleman

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.

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.

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.

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?

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?

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?

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?

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.

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?

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.

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.

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.

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 me this week with Jordan Peterson as we examine the way lives are built on conflicting wants.

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”.

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.

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.

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.

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.

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?

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?