ToKCast
ToKCast
Brett Hall
This is a podcast largely about the work of David Deutsch and his books ”The Beginning of Infinity” and ”The Fabric of Reality”.
Ep 263: David Deutsch's "The Fabric of Reality" Chapter 13 "The Four Strands" Part 4 - and final.
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.
Jul 4
1 hr 30 min
Ep 262: David Deutsch's "The Fabric of Reality" Chapter 13 "The Four Strands" Part 3
This episode is heavily focussed on Dawkin's "Selfish Gene" explanation of Darwin's evolution by natural selection. Obviously there are readings from the relevant part of this chapter from The Fabric of Reality but I augment that with sections from "The Selfish Gene" itself as well as "The Beginning of Infinity" as well as a larger portion of me providing additional unpacking and exposition.
May 4
1 hr 3 min
Ep 261: Objective Morality II
Do not destroy the means of error correction. A deep unification of knowledge akin to unifying quantum theory with computation to create the theory of quantum computation. David Deutsch will be known for not merely forging the basis of quantum computing but also a new basis for morality and epistemology. I explain much of that here. "What should we do next?" is a question with an answer that is right or wrong, good or evil, better or worse. All existing moral frameworks philosophers debate are theories that can serve as criticisms of "what to do next". Morality is as objective as domain as mathematics, physics or anything else. Relativism, like it's sister philosophy dogmatism is false.
Apr 23
38 min
Ep 260: I don't believe it!
Response to a question about my discussion with  @drpeterboghossian  here: https://youtu.be/72vhtT0pFmA?si=hAx1kPho4DkLkBFN This is yet another way of coming at a critique around the concept of "belief" or those who profess to "believe" and so on using Deutsch's approach that knowledge is "information with causal power". I explore that for around the first 40 mins. If you're in a hurry, skip to the final 15 or 20 minutes where I get to responding to the meat of the matter in the question itself.
Apr 5
1 hr 6 min
Ep 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
Mar 11
59 min
Ep 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.
Feb 16
1 hr 38 min
Ep 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.
Feb 9
1 hr 8 min
Ep 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?
Jan 30
1 hr 9 min
Ep 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
Jan 14
1 hr 22 min
Ep 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.
Dec 25, 2025
1 hr 33 min
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