# Ep 263: David Deutsch's "The Fabric of Reality" Chapter 13 "The Four Strands" Part 4 - and final. Page: https://stenobird.com/podcast/tokcast-76992/ep-263-david-deutsch-s-the-fabric-of-reality-chapter-13-the-four-strands-part-4-and-final Text version: https://stenobird.com/podcast/tokcast-76992/ep-263-david-deutsch-s-the-fabric-of-reality-chapter-13-the-four-strands-part-4-and-final.md Podcast: [ToKCast](https://stenobird.com/podcast/tokcast-76992) Published: 2026-07-04T14:17:48+00:00 Episode link: https://brettroberthall.podbean.com/e/ep-263-david-deutschs-the-fabric-of-reality-chapter-13-the-four-strands-part-4-and-final/ Audio file: https://mcdn.podbean.com/mf/web/vcznnzfhw88f9p5v/Final_Four_podcast77nt0.mp3 Processing state: not_requested JSON: https://stenobird.com/v1/public/podcasts/tokcast-76992/episodes/ep-263-david-deutsch-s-the-fabric-of-reality-chapter-13-the-four-strands-part-4-and-final Duration seconds: 5456 ## Resource How do the Four Strands of the Fabric of Reality - Quantum Physics, Computation, Epistemology and Evolution by Natural Selection hold together? What does taking them each seriously and all of them together seriously? Is it possible to construct a worldview without one of them or based on a single one alone? What do they imply about free will and consciousness? Doesn't making progress require us to assume them false? All this and more. ## Actions - request_transcript: `POST https://stenobird.com/v1/public/podcasts/tokcast-76992/episodes/ep-263-david-deutsch-s-the-fabric-of-reality-chapter-13-the-four-strands-part-4-and-final/transcription-requests` — Idempotently request low-priority transcript generation for this episode. - read_markdown: `GET https://stenobird.com/podcast/tokcast-76992/ep-263-david-deutsch-s-the-fabric-of-reality-chapter-13-the-four-strands-part-4-and-final.md` — Read the agent-friendly Markdown representation of this episode resource. A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed. ## Transcript Full transcripts are not published on public pages unless there is a clear rights basis.