212 episodes

This is a podcast primarily about the work of philosopher and physicist David Deutsch and related matters (such as Popperian epistemology). I read from and comment upon the books ”The Beginning of Infinity” & ”The Fabric of Reality” (both by Deutsch), ”The Science of Can & Can’t” (by Deutsch’s collegue Marletto) and ”Rationality” by Pinker (so far). In addition I make stand alone episodes about topics like resources, environmentalism, economics, science, philosophy, epistemology (especially explanations) and reason broadly.

ToKCast Brett Hall

    • Society & Culture
    • 4.8 • 85 Ratings

This is a podcast primarily about the work of philosopher and physicist David Deutsch and related matters (such as Popperian epistemology). I read from and comment upon the books ”The Beginning of Infinity” & ”The Fabric of Reality” (both by Deutsch), ”The Science of Can & Can’t” (by Deutsch’s collegue Marletto) and ”Rationality” by Pinker (so far). In addition I make stand alone episodes about topics like resources, environmentalism, economics, science, philosophy, epistemology (especially explanations) and reason broadly.

    Ep 212: Livestream 3, June 28 2024

    Ep 212: Livestream 3, June 28 2024

    More questions, more lengthy and more verbose than ever. Enjoy, or drift of to sleep with me ;)

    • 2 hr 24 min
    Ep 211: Livestream 2, June 26 2024

    Ep 211: Livestream 2, June 26 2024

    Fear not! ToKCast is not becoming a pure Q&A "show". This is literally a kind of "break" for me that I find easy and I note the listeners find fun. Today's a little shorter and - here's some of the topics covered!
     
    00:00: David Deutsch mentioned on Lex Fridman
    04:15: Dennis Noble debates Richard Dawkins on the selfish gene
    16:47: The goal driven life and AI
    27:51 Self similarity - minds and universes
    34:39: The hard problem of consciousness and Popperian epistemology
    41:30: Wave particle duality
    53:53 The fun criterion - and some reflections on responsibility and “toil”.
    1:05:44 - Communication and the difficulty thereof between people
    1:07:13 - Roger Penrose and the universality of (quantum) computation (or Taking Theories Seriously…)
    1:13:35 Book recommendations.

    • 1 hr 17 min
    Ep 210: Livestream - Question, Answer and repeat for 2+ hours

    Ep 210: Livestream - Question, Answer and repeat for 2+ hours

    I put out a call on Twitter/@X for questions and got a deluge. Between those and more from YouTube itself - this is the result ranging over predicting the future, through to theories of learning, AGI and AI, optimism and epistemology - many of the major hits and more.

    • 2 hr 15 min
    Ep 209: Rational Decision Making

    Ep 209: Rational Decision Making

    Riffing on Karl Popper and David Deutsch (especially). A broad overview, covering lots of the basics of "social" or "rational" choice theory, Bayesianism (again!), misconceptions, good ideas and bad. Errors my own as always.

    • 1 hr 3 min
    Ep 208: David Deutsch’s ”The Fabric of Reality” Chapter 11 ”Time: The First Quantum Concept” Part 3

    Ep 208: David Deutsch’s ”The Fabric of Reality” Chapter 11 ”Time: The First Quantum Concept” Part 3

    Here we explore the distinction between classical notions of time (including spacetime physics) as approximations to how time is understood in the multiverse. How perfectly deterministic laws lead to subjective unpredictability. Consequences for free will, questions about what happened before time began (or after it ends), new discoveries since the publication of The Fabric of Reality was published in 1997 and David's subtle alterations to phrasing between The Fabric of Reality and The Beginning of Infinity (in particular with reference to identical vs fungible and how tossing "fair" coins in our universe isn't 50/50 heads and tails. If you would like to discuss any of the content in this video with me at length, sign up to Airchat at https://www.air.chat where I am active daily answering people's questions and engaging with those interested in the work of David Deutsch and associated thinkers and ideas explored in his work, wider physics, philosophy and everything.

    • 39 min
    Ep 207: Variations on a Conjecture

    Ep 207: Variations on a Conjecture

    If you are distracted by, or simply prefer a version without, the background music - you can find that here: https://youtu.be/xSbqTTs1nl0
     
    My preferred version is here: https://youtu.be/2IneL4VpShE as there are some helpful (though not essential) visuals.
    This is about knowledge creation and the the commonalities between the two forms known (evolution (by natural selection) and explanatory) and the differences between them. It teases out and synthesises some of the work of Darwin, Popper and Deutsch on these matters of what creativity means. I also consider the place of prediction and prophecy and the "urge" to know what the future will hold. This is sometimes the dividing line between optimism and pessimism.
    You can support this ongoing exercise in optimism, exposition and encouraging rapid progress by following the links here: https://www.bretthall.org/ Thankyou for any and all support. Know it is much appreciated.

    • 26 min

Customer Reviews

4.8 out of 5
85 Ratings

85 Ratings

GAUZ2023 ,

Spectacular. Jaw dropping. Mind expanding.

Brett’s work distilling and clarifying how to think about complex philosophical and scientific ideas has dramatically shifted my worldview. This podcast and subsequent reading of the applicable books has expanded my toolset for critical thinking beyond anything I ever experienced in college or graduate school. I cannot recommend this podcast highly enough; it is my favorite of all time. Brett, thank you, and please keep it up!

OmarMo93 ,

Useful and engaging

Brett takes physicist concepts and breaks them down in a clear and engaging way, a must listen!

RKMoreira ,

Extraordinarily useful.

I’m a non-physicist (a busy physician, with only very basic knowledge of physics) who is very much interested in understanding the reality of our universe. I have found David Deutsch to be one of the most fascinating writers I have ever come across, and his ideas have inspired me and changed some of my most basic conceptions of objective reality. His theories (and books), however, are so dense with revolutionary thoughts that they require time and commitment to understand and digest. That’s where Brett Hall’s podcast comes in. To me, it has been an indispensable companion to the chapters in DD’s books. My strategy has been to listen to Brett’s corresponding episode before and after reading each book chapter. Brett is himself an amazing intellect who really excels at explaining and putting into context the various concepts in DD’s work. Very helpful, I’m a big fan of both of you.

Top Podcasts In Society & Culture

Where Everybody Knows Your Name with Ted Danson and Woody Harrelson (sometimes)
Team Coco & Ted Danson, Woody Harrelson
The Ezra Klein Show
New York Times Opinion
Stuff You Should Know
iHeartPodcasts
Shawn Ryan Show
Shawn Ryan | Cumulus Podcast Network
This American Life
This American Life
Wholeheartedly with Kendall and Galey
PodcastOne

You Might Also Like

Naval
Naval
Dwarkesh Podcast
Dwarkesh Patel
"Upstream" with Erik Torenberg
Erik Torenberg
Conversations with Tyler
Mercatus Center at George Mason University
The Ben & Marc Show
Marc Andreessen, Ben Horowitz
Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
Sean Carroll | Wondery