
ToKCast
Philosophy Podcasts
This is a podcast largely about the work of David Deutsch and his books ”The Beginning of Infinity” and ”The Fabric of Reality”.
Location:
Australia
Genres:
Philosophy Podcasts
Description:
This is a podcast largely about the work of David Deutsch and his books ”The Beginning of Infinity” and ”The Fabric of Reality”.
Twitter:
@ToKTeacher
Language:
English
Contact:
0422922596
Email:
brett@bretthall.org
Episodes
Ep 254: Australia: The Land of Bans. (Social Media prohibited for under-16s. Analysis of the arguments "for".)
12/24/2025
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.
Duration:01:33:08
Ep 253: Further Comments on the Bondi Massacre.
12/22/2025
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.
Duration:00:35:18
Ep 252: Response to the Prime Minister of Australia
12/19/2025
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
Duration:01:05:05
Ep 251: OK Doomer!
12/11/2025
This is a reproduction of a talk I gave to some trainee surgeons in Sydney who, among other things, were learning about AI as it was affecting their own field. It is, in a sense, a summary of many of the points I have been making recently on this channel with respect to AI and pessimism around it.
Duration:00:31:08
The Farthest Reaches - Audiobook
11/12/2025
The Farthest Reaches is a book about "Explanatory Universality". Explanatory Universality is a concept introduced by physicist and philosopher David Deutsch in his book "The Beginning of Infinity". This present work follows the logic of that concept as it applies to education, psychology, morality, immigration, the trans issue, "evolutionary psychology" and the significance of people to physical reality and much more. This version is significantly longer and with superior audio production compared with the original podcast of the same name. These are the chapters and timestamps:
00:00 Preface
21:51 Chapter 1 - Universality and Reach
29:38 Chapter 2 - The Reach of Explanatory Universality
38:53 Chapter 3 - Explaining Explanatory Universality
47:31 Chapter 4 - Explanatory Universality and Education
1:00:27 Chapter 5 - Explanatory Universality, Psychological Science and IQ
1:03:41 Chapter 6 - Explanatory Universality and Adopting Culture
1:10:26 Chapter 7 - Explanatory Universality and IQ Part 2
1:14:58 Chapter 8 - Explanatory Universality and the “Trans Issue”
1:22:57 Chapter 9 - Explanatory Universality and Immigration
1:48:12 Chapter 10 - Explanatory Universality and Ethnicity
2:11:39 Chapter 11 - Explanatory Universality and Multiculturalism
2:23:22 Chapter 12 - Explanatory Universality and Mental Illness
2:32:35 Chapter 13 - Explanatory Universality, Hangups and Sexuality
2:41:26 Chapter 14 - Explanatory Universality and The Woke Left and The Woke Right
2:48:29 Chapter 15 - Explanatory Universality and Optimism
2:58:20 Chapter 16 - Explanatory Universality and Artificial Intelligences
3:09:59 Chapter 17 - Universality, Freedom of Speech and Freedom of Reach
3:17:07 Chapter 18 - Explanatory Universality and Evolutionary Psychology
3:31:20 Chapter 19 - Explanatory Universality and Individuality
3:39:05 Chapter 20 - Summary and Conclusions
4:08:18 Acknowledgements and Afterward
The author thanks David Deutsch ( @DavidDeutschPhysicist ) Naval Ravikant ( @NavalR ) Reid Nicewonder ( @CordialCuriosity ) and Peter Boghossian ( @drpeterboghossian ) for their crucial support and engagement. And to all other supporters who have contributed to the ongoing viability of ToKCast and my other content output. Brett Hall is a technical advisor and content creator, Ambassador to Conjecture Institute ( @ConjectureInstitute ) and Board Member of the National Progress Alliance (www.nationalprogressalliance.org) and holds undergraduate qualifications from:
The University of New South Wales )in Physics and the Philosophy of Science)
The University of Western Sydney (in Science and Mathematics Teaching)
and Postgraduate Qualifications from
Swinburne University, Melbourne (in Astronomy and Astrophysics).
Macquarie University (in the Teaching of English Language)
The Australian Catholic University (in Mathematics)
and a partially completed post graduate certificate in Geology and Geophysics from Macquarie University.
He lives in Sydney, Australia.
Duration:04:19:29
Ep 249: The Farthest Reaches Part 4 and Conclusion
10/17/2025
Chapters and Timestamps
00:06 Chapter 13: Explanatory Universality, Hangups and Sexuality
08:07 Chapter 14: The Woke Left and the Woke Right
15:38 Chapter 15: Universality and Optimism
25:04 Chapter 16: Universality and Artificial Intelligences
35:54 Chapter 17: Universality, Freedom of Speech and Freedom of Reach
42:44: Chapter 18: Summary and Conclusions
Duration:01:12:15
Ep 248: AI and Philosophy of Science
10/13/2025
This is the extended "director's cut" of a talk delivered for "RatFest 2025" (next year to be "Conjecture Con"). This also serves as a supplement to my "Doom Debates" interview which can be found here: https://youtu.be/koubXR0YL4A?si=483M6SPOKwbQYmzb
It is simply assumed some version of "Bayesian reasoning" is how AI will "create" knowledge. This misconception permeates the https://ai-2027.com paper, as well as Bostrom and Yudkowsky's work on this, as well as that of every other AI "Doomer" and even on the other extreme the so-called "AI-Accelerationists". All of that indicates a deep misconception about how new explanations are generated which comes from a deep misconception about how science works because almost no one in the field of AI seems to think the *philosophy of* science is even relevant. I explain what has gone wrong:
00:00 Introduction
09:14 The Big Questions and the new Priesthoods
18:40 Nick Bostrom and Superintelligence
25:10 If anyone builds it, everyone dies and Yudkowsky.
33:32 Prophecy, Inevitability, Induction and Bayesianism.
41:42 Popper, Kuhn, Feyerabend and Lakatos.
49:40 AI researchers ignore The Philosophy of Science.
58:46 A new test for AGI from Sam Altman and David Deutsch?
1:03:35 Accelerationists, Doomers and “Everyone dies”.
1:10:21 Conclusions
1:15:35 Audience Questions
Duration:01:25:37
Ep 247: The Farthest Reaches Part 3
9/22/2025
Chapters and Timestamps
00:07 Chapter 10 Explanatory Universality and Ethnicity
24:51 Chapter 11 Explanatory Universality and Multiculturalism
37:47 Chapter 12 Explanatory Universality and Mental Illness.
Duration:00:47:19
Ep 246: The Farthest Reaches Part 2
9/16/2025
Chapters and Timestamps:
00:06 Chapter 5 Explanatory Universality, Psychology and IQ
03:30 Chapter 6 Explanatory Universality and Adopting Culture
11:47 Chapter 7: Explanatory Universality and IQ Part 2
17:10 Chapter 8 Explanatory Universality and the “trans” issue.
27:35 Chapter 9: Explanatory Universality and Immigration
Duration:00:56:26
Ep 245: The Farthest Reaches (Part 1)
9/12/2025
Chapters 1 to 4 of a multi-chapter series about the reach of what I argue is one of the most important lessons to learn in order to solve many pressing problems: explanatory universality. This podcast provides an explanation that "explanatory universality" is an idea of such depth it may have among the greatest reach of any idea.
Chapters:
00:12 Chapter 1 - Universality and Reach
09:09 Chapter 2 - The Reach of Explanatory Universality
20:01 Chapter 3 - Explaining Explanatory Universality
30:23 Chapter 4 - Explanatory Universality and Education
Duration:00:44:43
Ep 244: Deep learning is not "inductive".
8/22/2025
We are told by people working in the field, researchers and those who publish academic papers on the topic that artificial intelligence or deep learning or LLMs or Machine Learning or Recurrent Neural Networks - call them what you like - employ some form of inductive reasoning. But do they? What is inductive reasoning? What is deductive or adductive for that matter? Is "new physics" or other new science being discovered by the most recent and best chatbots or other "artificially intelligent" computer systems? My response to all that is contained herein.
For images see: https://youtu.be/9Dimv7mOls4
For more information: https://www.bretthall.org/blog/induction
Duration:00:22:35
Ep 243: In praise of ignorance - the podcast. With Liberty Fitz-Claridge
7/21/2025
This episode is a reading of and reflection upon more writing by David Deutsch - an article you can find at https://takingchildrenseriously.com/in-praise-of-ignorance/
Joining me is philosopher and language educator Liberty Fitz-Claridge. Liberty holds Master Degrees in both Philosophy and Applied Linguistics and English Language teaching, as well as a Bachelors in The Philosophy of Science. As well as teaching, Liberty runs the Popper-Deutsch Reading Group which can be found at www.meetup.com/popper-deutsch-reading-group/
In this conversation Liberty refers to the following articles:
1. Ioup, Georgette, Elizabeth Boustagui, Manal El Tigi, and Martha Moselle. “Reexamining the Critical Period Hypothesis: A Case Study of Successful Adult SLA in a Naturalistic Environment.” Studies in Second Language Acquisition 16, no. 1 (1994): 73–98. https://doi.org/10.1017/S0272263100012596.
2. Alsulaimani, Adil. (1990). Reading problems in Arab learners of English (Unpublished doctoral dissertation). London University, UK.
3. Randall, Mick and Meara, Paul. (1988). “How Arabs read Roman letters.” Reading in a Foreign Language, 4 (2): 133-145.
Duration:01:36:22
Ep 242: Is religion worth preserving?
7/11/2025
Woke is a rejection of the truth, the good, the beautiful. Is the best response a return to traditional religion? Are some dogmas worth defending?
Duration:00:17:36
Ep 241: AI 2027 Reaction Part 5: Summary and Conclusions
5/29/2025
A summary of some arguments made in the previous 4 parts, and a conclusion to my evaluation of https://ai-2027.com I refer to Daniel Kokotajlo's paper which contained an earlier set of predictions made in 2021 about the 5 years leading to 2026 which is found here https://www.lesswrong.com/posts/6Xgy6CAf2jqHhynHL/what-2026-looks-like Note that Part 4 is here: https://youtu.be/C3jDjuSLBv0 Part 3 is here: https://youtu.be/7P-UlHiTins Part 2 is here: https://youtu.be/o3Rdj37UJjw Part 1 is here: https://www.youtube.com/watch?v=Uq_txKy-XMQ Credit to @drpeterboghossian for the inspiration, @NavalR for the support and @DavidDeutschPhysicist for many of the arguments made with errors, as always, my own.
Duration:00:42:18
Ep 240: AI 2027 Reaction Part 4
5/22/2025
Note that Part 3 is episode 239 or can be found here: https://youtu.be/7P-UlHiTins Part 2 is here: https://youtu.be/o3Rdj37UJjw Part 1 is here: https://www.youtube.com/watch?v=Uq_txKy-XMQ I react to the contents of this article https://ai-2027.com
Duration:00:22:01
Ep 239: AI 2027 Reaction Part 3
5/21/2025
Episode 238 contains Part 2 of this podcast and Episode 237 is Part 1. Also all parts are available on Youtube as almost always. Eg here for part 2: https://youtu.be/o3Rdj37UJjw Part 1 is here: https://www.youtube.com/watch?v=Uq_txKy-XMQ
I am reacting to the contents of this article https://ai-2027.com
Duration:00:46:19
Ep 238: AI 2027 Reaction Part 2
5/20/2025
Note that Part 1 is found in Episode 237 or can be viewed here: https://www.youtube.com/watch?v=Uq_txKy-XMQ
I react to the contents of this article https://ai-2027.com with some further general comments on @DwarkeshPatel 's interview with two of the authors here: https://www.youtube.com/watch?v=htOvH12T7mU
Duration:00:48:15
Ep 237: AI 2027 Reaction. Part 1
5/16/2025
I react to the contents of this article https://ai-2027.com with some further general comments on @DwarkeshPatel 's interview with two of the authors here: • 2027 Intelligence Explosion: Month-by...
Youtube version of this podcast is here: https://www.youtube.com/watch?v=Uq_txKy-XMQ
Duration:00:52:51
Ep 236: Max Velthoven, legal science, AI and epistemology.
4/25/2025
Max is a tax lawyer who is applying Popperian epistemology to legal science and issues in AI. Links to some more of his work, and the slides to accompany part of this video are below. Slides for Max's talk(s):
https://www.bretthall.org/popper-and-legal-science.html
Max’s journal article on AI with Eric Marcus (in NLFiscaal TaxTech): NLFiscaal | Problems in AI, their roots in philosophy, and implications for science and society:
https://www.nlfiscaal.nl/nlfiscaal-doc/BEEAD89DD9E44E81B23811716258A4C4
Slides to accompany: https://www.linkedin.com/feed/update/urn:li:activity:7290619876879028225/
Made possible with support from, and In association with, https://nav.al
Duration:01:09:37
Ep 235: The Simulation Hypothesis
4/9/2025
This is a "megasode" combining two episodes from Youtube all about the Simulation Hypothesis. In the first part I provide the philosophical basis for the simulation hypothesis as explained especially by Nick Bostrom and compare it to other "ultimate" explanations of reality. In part 2 I discuss and evaluate the arguments made by Scott Adams and Joe Rogan who endorse some version of Bostrom's argument.
Duration:01:50:15