Peter Woit: Unification, Twistors, and the Death of String Theory

I personally subscribe to The Economist. SUMMER SALE to Aug 17, 2026: 50% off the annual subscription! No other podcast has this! https://economist.com/TOE Prof. Peter Woit critiques the decline of string theory and outlines his gravi-weak unification approach using Euclidean twistors in Euclidean spacetime. He also examines the role of mathematicians, machine learning, and philosophical issues in the search for quantum gravity.0:00 Introduction0:00 String theory's fundamental issues | Mathematicians' challenges2:20 Spacetime and twistor theory insights20:00 Bundles & diffeomorphism groups38:34 Spinors as a spacetime point46:57 Dominance of string theory & Ed Witten's influence54:17 Quest for quantum gravity1:03 22 String theory's lack of predictive power1:09 33 Machine learning meets theoretical physics1:18 56 Personal attacks vs. intellectual debate1:24 49 Mathematicians vs. Physicists | Academic silos1:37 15 Developing a contrarian view & the origin of 'Not Even Wrong'1:40 54 Langlands & representation theory1:48 51 Spacetime is NOT doomed1:58 47 Sean Carroll's crisis in physics (odd responses to criticism)2:13 21 Differentiable structures by dimension2:26 10 Gravi-weak unification & chirality2:32 57 Chern-Simons theory2:42 20 Gravity as torsion or curvature2:50 07 Category theory in physics2:56 43 Defining a fulfilling lifeSPONSORS:- Patreon: https://patreon.com/curtjaimungal (early access to ad-free audio episodes!)- Crypto: https://nowpayments.io/donation/TOE- PayPal: https://tinyurl.com/paypalTOE- Twitter: https://twitter.com/TOEwithCurt- Discord Invite: https://discord.com/invite/kBcnfNVwqs- iTunes: https://podcasts.apple.com/ca/podcast/better-left-unsaid-with-curt-jaimungal/id1521758802- Pandora: https://pdora.co/33b9lfP- Spotify: https://open.spotify.com/show/4gL14b92xAErofYQA7bU4e- Subreddit r/TheoriesOfEverything: https://reddit.com/r/theoriesofeverything- TOE Merch: https://tinyurl.com/TOEmerchRESOURCES:- YouTube link: https://youtu.be/9z3JYb_g2Qs- Not Even Wrong (Peter Woit's Blog): https://www.math.columbia.edu/~woit/wordpress- Not Even Wrong (Peter Woit's Book): https://amzn.to/40NFeaK- Spacetime is Right-Handed (Peter Woit's Article): https://www.math.columbia.edu/~woit/righthanded.pdf | https://www.math.columbia.edu/~woit/wordpress- Podcast w/ Edward Frankel: https://youtu.be/n_oPMcvHbAc- The Elegant Universe (Brian Greene): https://amzn.to/3sNmk7x- The Trouble With Physics (Lee Smolin): https://amzn.to/47lCCUj- Podcast w/ Sabina Hossenfelder on TOE: https://youtu.be/walaNM7KiYA- Podcast w/ Stephon Alexander Part 1: https://youtu.be/VETxb96a3qk- Podcast w/ Stephon Alexander Λ Sal Pais: https://youtu.be/PE4C7OI7Frg- Podcast w/ Eric Weinstein: https://youtu.be/KElq_MLO1kw- Podcast w/ Stephen Wolfram Part 1: https://youtu.be/1sXrRc3Bhrs- Podcast w/ Stephen Wolfram Part 2: https://youtu.be/xHPQ_oSsJgg- Podcast w/ Jonathan Oppenheim: https://youtu.be/NKOd8imBa2s Theories of Everything with Curt Jaimungal features long-form, technically detailed interviews with leading researchers in physics, mathematics, consciousness, and philosophy, exploring topics at the level of active research. For academics, graduate students, and anyone seeking depth beyond popular science. FOLLOW: Substack | Spotify | YouTube | Twitter Learn more about your ad choices. Visit megaphone.fm/adchoices