
ToKCast
Brett Hall
Show overview
ToKCast has been publishing since 2018, and across the 8 years since has built a catalogue of 271 episodes. That works out to roughly 260 hours of audio in total. Releases follow a fortnightly cadence.
Episodes typically run thirty-five to sixty minutes — most land between 32 min and 1h 15m — though episode length varies meaningfully from one episode to the next. None of the episodes are flagged explicit by the publisher. It is catalogued as a EN-language Society & Culture show.
The show is actively publishing — the most recent episode landed 3 days ago, with 17 episodes already out so far this year. The busiest year was 2022, with 65 episodes published. Published by Brett Hall.
From the publisher
This is a podcast largely about the work of David Deutsch and his books ”The Beginning of Infinity” and ”The Fabric of Reality”.
Latest Episodes
View all 271 episodesEp 271: Super Intelligence: Then and Now. Fiction and Reality. Part 1
Ep 270: The Gradient Descent into Doom.
Ep 269: The Quantum Observer Effect?
Ep 268: AGI has arrived podcast
Ep 267: The Orthogonality Thesis is Moral Relativism. (Response to Sam Harris on AI).
Ep 266: Facts, Fantasy and Critical Thinking
Ep 265: David Deutsch's "The Fabric of Reality" Chapter 14 "The Ends of the Universe" Part 2 The Omega Point
Ep 264: David Deutsch's "The Fabric of Reality" Chapter 14 "The Ends of the Universe" Part 1
Ep 263: David Deutsch's "The Fabric of Reality" Chapter 13 "The Four Strands" Part 4 - and final.
Ep 262: David Deutsch's "The Fabric of Reality" Chapter 13 "The Four Strands" Part 3
Ep 261: Objective Morality II
Ep 260: I don't believe it!
Ep 260Ep 259: Reaction to Michael Levin Part 3: Bait and Switch, Podcastistan and Surprising(?) algorithms.
In this, the third and final part of a series, I break down some work Michael Levin has done with sorting algorithms. That seems very dry until you hear his claim that these algorithms that are well known and have been studied for decades exhibit extremely unusual behaviour never before spotted because "no one ever bothered to look". This part of the interview is between Ferris and Levin is referring to this paper: https://journals.sagepub.com/doi/10.1177/10597123241269740 which is available on the arXiv at https://arxiv.org/pdf/2401.05375 and which a Forbes writer authored this "explainer" of sorts here: https://www.forbes.com/sites/andreamorris/2025/11/13/the-secret-life-of-algorithms/ and which Levin himself explains here: https://thoughtforms.life/algorithms-redux-finding-unexpected-properties-in-truly-minimal-systems/ Michael Levin has done some very interesting work in biology around worms regrowing heads and so on. But this "research" is quite a departure from that. Get my book here: https://www.amazon.com/Farthest-Reaches-Important-Entities-Universe/dp/B0GRR2LLZV/ref=sr_1_1?crid=157SNHQC0QFHK&dib=eyJ2IjoiMSJ9.D5jlSZxhaQmrjzrnV209t0-bvV-i5un48Fwu5tb8Y42AKywnL9YRXJ8ylEe8EPH2SBLoKpU2AXag0llMQ3XfVILgUrAiohRqKjRaBiNdrcUqVQIV6MyEUBdAWiwjufzS4dCs_m5HBm-Px8errzQVyqzjO7F9UEGMeOgpjDGyJBB5Qbi98LHHSYb91z0J5sP9fRT8BaP4wXNvi4p0Va4kbQNBXxPjUb0OOwORDDGbWGo.HBT8A2pQNHYK8NyTIn91VtLaPJEMt17xp7qCt4bNcv4&dib_tag=se&keywords=the+farthest+reaches&qid=1773231582&sprefix=the+farthest+reac%2Caps%2C346&sr=8-1
Ep 259Ep 258: Reaction to Michael Levin, Part 2: Bioelectricity, Consciousness and Knowing
This is the second in a multipart series where I react to some interviews with @drmichaellevin a biologist who, among other things, specialises in bioelectricity. His research can be found here: https://www.drmichaellevin.org and his "explainer articles" for his own professional papers here: https://thoughtforms.life . In this episode I mention the discussion he had with @timferriss which is found here: • Dr. Michael Levin — Reprogramming Bioelect... Part 1 is here: • Reaction to Michael Levin, Part 1: Categor... Part 3 will be out soon.
Ep 258Ep 257: Reaction to Michael Levin, Part 1: Categories and Continuums.
This is the first in a multipart series where I react to some interviews with @drmichaellevin - a biologist who, among other things, specialises in bioelectricity. His research can be found here: https://www.drmichaellevin.org/publications/ and his "explainer articles" for his own professional papers here: https://thoughtforms.life . Although in this first episode I mention the discussion he had with @timferriss which is found here: https://youtu.be/kz1jnoKfRrI?si=O-TTxrVleMbDsEH8 I never actually get to it in this first part. I do comment on Michael's interview with @lexfridman found here: https://youtu.be/Qp0rCU49lMs?si=jYN_SbXCd6ziO_pe and even then only in brief because I'm verbose. Part 2 will be out soon.
Ep 257Ep 256: David Deutsch’s ”The Fabric of Reality” Chapter 13 ”The Four Strands” Part 2
Comparing Kuhn and Popper on Quantum Theory: Here we go deeper into the differences between Karl Popper and Thomas Kuhn's account of how science moves from one theory to another. David applies the theory set out in part 1 of this chapter to the specific case of quantum theory. Did social forces have a major impact on whether quantum theory was adopted as Kuhn would have it, or were rational factors like argument and experiment crucial in dictating how science broadly, physics and the community of physicists took on a new "counter-cultural" idea?
Ep 256Ep 255: Does this research explain how LLMs work?
I take a look at these three papers: 1. https://www.arxiv.org/abs/2512.22471 2. https://arxiv.org/abs/2512.23752 3. https://arxiv.org/abs/2512.22473 Collectively titled "The Bayesian Attention Trilogy" along with some other material - in particular an interview with one of the authors "Vishal Misra" - https://www.engineering.columbia.edu/faculty-staff/directory/vishal-misra For those familiar with my output on this you can probably skip to about halfway through at 42:40. Prior to this is a lot of background on Induction, Bayesianism, Critical Rationalism and so on that people may have heard from me before in different contexts - although for what it's worth these are new ways of expressing those ideas. At the end I am reacting to a video found here: https://www.youtube.com/watch?v=uRuY0ozEm3Q
Ep 255Ep 254: Australia: The Land of Bans. (Social Media prohibited for under-16s. Analysis of the arguments "for".)
This is effectively part 3 in a series of responses to the Prime Minister of Australia about censorship, legislation, policy, philosophy, Bondi and Social Media. The Prime Minister attempted to explain, as best he could, the reasons for banning under-16 year olds from certain social media platforms. I remark on an interview he conducted and make some broader remarks in conclusion to a short series on his response to the Bondi tragedy and other issues. These are largely off-the-cuff rather than prepared remarks - so expect the tone, tenor, tempo and expression to be a little different than usual.
Ep 254Ep 253: Further Comments on the Bondi Massacre.
Here I remark on comments made by Australian Home Affairs Minister Tony Burke and Education Minister Jason Clare and then make some broader points about the recent tragedy on Bondi Beach. This is part 2 of a response to the Prime Minister of Australia and others.
Ep 253Ep 252: Response to the Prime Minister of Australia
A reaction "episode" where I make some remarks about a speech by Anthony Albanese, Prime Minister of Australia, in the wake of the Bondi Beach Massacre by Islamists terrorists who attacked Jews at a Hanukkah celebration on 14 December, 2025