Science

I have always had this strange gut feeling that the universe is, in some sense, new all throughout the day. Not new in the dramatic science-fiction sense, where everything resets and starts over, but new in the sense that reality seems to keep unfolding into fresh versions of itself depending on what happens next. A conversation goes one way instead of another. You decide to go out, or stay in. You send the message, or you leave it unsent. Tiny differences, and suddenly the entire shape of the day changes. ...

One of the strangest facts about reality is that there is any reality at all. Not just stars, galaxies, black holes, planets, oceans, or people. Not just matter and energy arranged in complicated ways. The deeper mystery is that there is something rather than nothing. It is such a simple question that it almost feels childish when you first ask it. But it is not childish at all. It may be the deepest question we can ask. ...

Computing Bletchley Park Bletchley Park - The historic site of World War II codebreaking and the birthplace of modern computing. Located in Milton Keynes, UK. The National Museum of Computing TNMOC - Located on the Bletchley Park estate, this museum houses the world’s largest collection of functional historic computers, including the rebuilt Colossus and the Harwell Dekatron (WITCH). Centre for Computing History Centre for Computing History - Based in Cambridge, this museum focuses on the personal computing revolution and features a massive collection of vintage consoles and computers. ...

What Are Very Large Numbers? Large numbers exist on a spectrum so extreme that human intuition breaks down. From the observable universe containing roughly 10^80 atoms, to numbers so impossibly vast that they dwarf the atoms themselves, these magnitudes challenge our ability to comprehend scale. But they’re not just abstract curiosities. Large numbers appear in computer science (combinatorics, compression), physics (entropy, quantum possibilities), and mathematics (set theory, ordinal numbers). Understanding them requires leaving behind our everyday sense of “big” and embracing the mathematical structures that define these hierarchies. ...

Max Tegmark Cosmologist and physicist known for his work on the mathematical universe hypothesis and multiverse theory. His research bridges the gap between quantum mechanics and cosmology, exploring the deepest questions about the nature of reality. The Case for Halting AI Development Max Tegmark joins Lex Fridman to discuss the urgent need to pause advanced AI development, exploring the existential risks of artificial intelligence and what safeguards humanity needs as we approach transformative technologies. ...