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    Philosophy

    ToKCast

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

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    Copyright: © Copyright 2021 All rights reserved.

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    Latest Episodes:
    Ep 271: Super Intelligence: Then and Now. Fiction and Reality. Part 1 Oct 06, 2026
    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?


    Ep 270: The Gradient Descent into Doom. Sep 23, 2026
    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


    Ep 269: The Quantum Observer Effect? Sep 23, 2026
    Show notes

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


    Ep 268: AGI has arrived podcast Sep 08, 2026
    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.


    Ep 267: The Orthogonality Thesis is Moral Relativism. (Response to Sam Harris on AI). Aug 26, 2026
    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.


    Ep 266: Facts, Fantasy and Critical Thinking Aug 20, 2026
    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.


    Ep 265: David Deutsch's "The Fabric of Reality" Chapter 14 "The Ends of the Universe" Part 2 The Omega Point Aug 15, 2026
    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


    Ep 264: David Deutsch's "The Fabric of Reality" Chapter 14 "The Ends of the Universe" Part 1 Jul 31, 2026
    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?


    Ep 263: David Deutsch's "The Fabric of Reality" Chapter 13 "The Four Strands" Part 4 - and final. Jul 05, 2026
    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.


    Ep 262: David Deutsch's "The Fabric of Reality" Chapter 13 "The Four Strands" Part 3 May 04, 2026
    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.


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