Podcast

ToKCast

Philosophy, Science, Society & Culture

This is a podcast largely about the work of David Deutsch and his books ”The Beginning of Infinity” and ”The Fabric of Reality”.

Episodes
273
Releases
Every two weeks
Typical length
1 hr 7 min
On air since
2018
Latest episode
2 weeks ago

Episodes

273 episodes, newest first

  1. Ep 273: Super Intelligence: Then and Now. Fiction and Reality. Part 2

    Episode 274

    Show notes

    Comparing ideas around "superintelligence" over the last decade. How have visions of what "SI" or "AI" or "ASI" and AGI evolved since Bostrom wrote "Superintelligence". This is the combination of various recent YouTube videos but counts as a sequel to part 1 found here: https://www.youtube.com/watch?v=dZ5OyhZ70wA or back at Episode 271 of the podcast.

    1 hr 48 min
  2. Ep 272: Is science truly explanatory?

    Episode 273

    Show notes

    A reaction to @CosmicSkeptic and @SabineHossenfelder discussing the nature, or even possibility of, genuine scientific explanation in this video: https://youtu.be/KWBm0_1QBDs?si=3JwIDGAtumO3mfBz Which of them is correct? Or are they both wrong? What counts as an explanation? What counts as a scientific explanation? What counts as a good scientific explanation? And is Alex right that science, in some ultimate sense, really only ever describes things?

    1 hr 17 min
  3. Ep 271: Super Intelligence: Then and Now. Fiction and Reality. Part 1

    Episode 272

    Show notes

    This is Part 1 of 2 where I compare and contrast what philosophers were saying about the possibility of "Super Intelligence" many years ago with respect to the discourse today. What did Nick Bostrom say over a decade ago, and what is he saying today? How is the discourse being framed and what are the major commentators saying, in their own words?

    57 min
  4. Ep 270: The Gradient Descent into Doom.

    Episode 271

    Show notes

    A spontaneous set of comments on the ongoing AI scare of 2026. What's happening in the media right now, on social media, in culture and at the highest levels of government. Why the pessimism and catastrophism? What can be done? Quite a few slides are referred to, but I do read through them. Incase you want the video - it's here: https://youtu.be/mItTFoYSCcA

    1 hr 44 min
  5. Ep 269: The Quantum Observer Effect?

    Episode 270

    Show notes

    Youtuber Warren Smith of https://www.youtube.com/@SecretScholars made some remarks about the double slit experiment. I assess his claims.

    15 min
  6. Ep 268: AGI has arrived podcast

    Episode 269

    Show notes

    Today CEO of the world's most valuable company, Nvidia, Jensen Huang, announced "AGI has arrived". https://x.com/JensenHuang/status/2096700264569090384?s=20 Some reflections on all that.

    35 min
  7. Ep 267: The Orthogonality Thesis is Moral Relativism. (Response to Sam Harris on AI).

    Episode 268

    Show notes

    This is in response to episode 489 of Sam Harris' "Making Sense" podcast - in a section only available via subscription. I have clipped the approximately 60 seconds worth of material I am narrowly responding to for fair use in this commentary. The case unpacked is, roughly, that morality can be disconnected from (is orthogonal to) reason broadly is no more than a restatement of moral relativism - and hence false. Morality and science are about objective reality so cannot be “orthogonal”. Moral progress goes hand-in-hand with reason broadly and any “sufficiently advanced” intelligent system would not only realise this, they must understand it to make unbounded, rapid progress.

    27 min
  8. Ep 266: Facts, Fantasy and Critical Thinking

    Episode 267

    Show notes

    A analysis in Popperian style of Candace Owens' "mode" of debate and discussion, approach to evidence and thinking and a comparison to the more mainstream evaluations of this debate.

    33 min
  9. Ep 265: David Deutsch's "The Fabric of Reality" Chapter 14 "The Ends of the Universe" Part 2 The Omega Point

    Episode 266

    Show notes

    All about the distant future. What does cosmology tell us about the fate of the universe, life and intelligence in some ultimate sense? Frank Tipler's The Omega Point Theory is the primary focus, but throughout we consider the centrality of The Turing Principle for predictions about the future of the cosmos, Roger Penrose's "Conformal Cyclic Cosmology" and some of Freeman Dyson's ideas.

    Timestamps and Chapters:

    0:00 – Introduction: Longevity, Immortality, the Singularity & the Omega Point

    5:50 – Recap: The Four Strands, Knowledge & the Multiverse

    8:20 – Frank Tipler’s Omega Point Theory Introduced

    9:00 – Anthropic Principles (Weak, Strong & Final)

    10:30 – The Turing Principle as the Key to the Omega Point 1

    3:40 – Modern Cosmology Challenges: Expanding Universe, Dark Energy & Heat Death

    20:20 – Cosmological Models That Allow Unlimited Computation (Big Crunch Conditions)

    22:00 – Tipler’s Rejoinders & the Case for Eventual Collapse

    24:00 – Computers Near the Omega Point & Mutual Implication with the Turing Principle

    30:00 – Defending the Strong Turing Principle & the Comprehensibility of Reality

    35:00 – Infinite Thoughts, Virtual Reality & Colonisation Deadlines

    37:00 – Roger Penrose’s Conformal Cyclic Cosmology (CCC)

    43:00 – Freeman Dyson’s Ideas & Infinite Computation in an Expanding Universe

    46:50 – Properties of the Omega Point: Omniscience, Omnipotence & Omnipresence

    1:15:00 – The Omega Point as “God”, Resurrection & Virtual-Reality Heaven

    1:18:50 – Critique of the Technological Singularity (Kurzweil) & Mind Uploading

    1:22:00 – The Limits of Far-Future Prediction (Ancient Builder Analogy)

    1:25:00 – Conclusions & Takeaways: Take the Turing Principle Seriously

    1 hr 29 min
  10. Ep 264: David Deutsch's "The Fabric of Reality" Chapter 14 "The Ends of the Universe" Part 1

    Episode 265

    Show notes

    What do our best explanations tell us about the ultimate ends of the universe? What is the difference between forming a world view about any one of the four strands (evolution, epistemology, quantum physics or computation) versus taking all four of them seriously?

    44 min
  11. Ep 263: David Deutsch's "The Fabric of Reality" Chapter 13 "The Four Strands" Part 4 - and final.

    Episode 264

    Show notes

    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.

    1 hr 31 min
  12. Ep 262: David Deutsch's "The Fabric of Reality" Chapter 13 "The Four Strands" Part 3

    Episode 263

    Show notes

    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.

    1 hr 4 min
  13. Ep 261: Objective Morality II

    Episode 262

    Show notes

    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.

    39 min
  14. Ep 260: I don't believe it!

    Episode 261

    Show notes

    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.

    1 hr 7 min
  15. Ep 259: Reaction to Michael Levin Part 3: Bait and Switch, Podcastistan and Surprising(?) algorithms.

    Episode 260

    Show notes

    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

    1 hr
  16. Ep 258: Reaction to Michael Levin, Part 2: Bioelectricity, Consciousness and Knowing

    Episode 259

    Show notes

    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.

    1 hr 39 min
  17. Ep 257: Reaction to Michael Levin, Part 1: Categories and Continuums.

    Episode 258

    Show notes

    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.

    1 hr 8 min
  18. Ep 256: David Deutsch’s ”The Fabric of Reality” Chapter 13 ”The Four Strands” Part 2

    Episode 257

    Show notes

    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?

    1 hr 10 min
  19. Ep 255: Does this research explain how LLMs work?

    Episode 256

    Show notes

    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

    1 hr 23 min
  20. Ep 254: Australia: The Land of Bans. (Social Media prohibited for under-16s. Analysis of the arguments "for".)

    Episode 255

    Show notes

    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.

    1 hr 33 min