John and Steve ask: What happens when a computer can read your brain, and eventually write to it? If you could download French like an app, would you still need to learn it? And if two brains could talk directly to each other, what’s left of language, privacy and the private self? Topics: Visions of the future: Elon Musk’s AI-generated video of a spacefaring civilization, space elevators, permanent bases on Mars and the Moon, and why hard tech outside of IT has barely moved (curvier cars aside).Reading the brain: Aleph Neuro’s non-invasive neurovascular ultrasound, the most detailed vascular image of a living human brain ever captured, and rebuilding what someone sees (a red London double-decker, a seagull) from brain activity alone.Medicine’s final frontier: Why dementia diagnosis is still so subjective, why “do more Sudoku” headlines are false hope, and the case for a yearly brain scan as routine as a blood pressure check.The BCI landscape: Neuralink, Synchron, Sam Altman’s Merge Labs and the invasive vs. non-invasive divide, plus why the field is waiting for its Raspberry Pi moment and still wide open for young engineers.The next computing interface: From the command line to the GUI to voice tools like Wispr Flow, then to thought, and whether ambient voice computing turns us back into an oral society.Brain to brain: Sapir-Whorf, Russian shades of blue, Chinese counting, and what happens to the everyday performance of relationships when your thoughts are no longer private.Would you get one?: Downloading languages and whole books, a local open-source model wired to your mind, and why nobody should drill a hole in their skull to turn on the dishwasher.Augmentation and human potential: The many agents in your head, freestyle chess and Tyler Cowen’s Average Is Over, J.C.R. Licklider’s “Man-Computer Symbiosis,” and seeing beyond the visible spectrum, just as Tang dynasty painters and the Impressionists each saw the world anew. Subscribe for more deep dives into technology and human progress. (0:00): Opening(0:30): Visions of the future: Elon’s AI video, Mars and space elevators(1:45): Brain-computer interfaces and restoring lost function(4:00): The BCI landscape: Neuralink, Synchron, Merge Labs and Aleph Neuro(8:50): Dementia and the CNS as medicine’s final frontier(12:15): Early innings: trials, hardware and the Raspberry Pi moment(15:30): The next computing interface: buttons, voice and bi-directional BCI(19:45): Oral vs. written societies(21:50): Language, Sapir-Whorf and brain-to-brain communication(26:00): Would you get one?(29:30): What does learning mean when you can write to your brain?(34:00): The many selves in your head(37:30): Augmentation, freestyle chess and man-computer symbiosis(41:00): Rewiring old wounds, removing the governor and the da Vinci question(43:00): Expanding the senses: animal communication, Tang painters and the Impressionists(45:30): Outro
