

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”.
Episodes
Mentioned books

9 snips
Mar 11, 2026 • 60min
Ep 259: Reaction to Michael Levin Part 3: Bait and Switch, Podcastistan and Surprising(?) algorithms.
Michael Levin, biologist known for work on morphogenesis and bioelectricity, discusses his shift to studying sorting-algorithm experiments and the idea of polycomputing. He describes surprising behaviors in simple sorting systems and how local, cell-like implementations reveal emergent secondary computations. Conversation covers methodological choices, added nondeterminism, and debate over whether these findings reflect classic algorithms or modified automata.

10 snips
Feb 16, 2026 • 1h 39min
Ep 258: Reaction to Michael Levin, Part 2: Bioelectricity, Consciousness and Knowing
Michael Levin, biologist who studies bioelectricity and regenerative patterning. He talks about cancer as electrical dysregulation. He explores flatworm bioelectric memory and how voltage patterns guide regeneration. He discusses tools to image and alter electrical memories, diverse forms of cognition across biology, and debates how consciousness and knowing might emerge from patterning.

12 snips
Feb 9, 2026 • 1h 8min
Ep 257: Reaction to Michael Levin, Part 1: Categories and Continuums.
Michael Levin, biologist studying bioelectricity and regeneration, explores how minds arise from bodies. He discusses perspectives on recognition, control, and valence. Topics include using behavioral-science lenses across scales, the idea of persuasion vs micromanagement in regeneration, and whether mindfulness is a continuum or a categorical leap. Short, probing conversation about tools, categories, and where mind emerges.

11 snips
Jan 30, 2026 • 1h 10min
Ep 256: David Deutsch’s ”The Fabric of Reality” Chapter 13 ”The Four Strands” Part 2
They compare Popper and Kuhn on how theories change and whether social forces or rational criticism drove quantum theory's rise. They contrast Copenhagen’s appeal to consciousness with Everett’s universal formulation and explore why the multiverse idea was ignored then later embraced. They link quantum computation and cosmology to the need for deeper explanations and discuss how Popperian criticism shapes scientific practice.

47 snips
Jan 14, 2026 • 1h 23min
Ep 255: Does this research explain how LLMs work?
Vishal Misra, a computer scientist known for his work on the 'Bayesian Attention Trilogy', joins to demystify language models. They discuss how LLMs work not through creativity but by mapping human explanations without true understanding. Misra argues these models, bound by their training data, lack the ability to innovate concepts or create new scientific knowledge. The conversation also touches on the limitations of Bayesian reasoning and the need for new architectures to achieve artificial general intelligence.

6 snips
Dec 25, 2025 • 1h 33min
Ep 254: Australia: The Land of Bans. (Social Media prohibited for under-16s. Analysis of the arguments "for".)
The discussion dives into Australia's ban on social media for those under 16, spotlighting the government's reasons centered on bullying and safety. A critique emerges on the emotional and shaky logic behind these arguments. The relationship between social media censorship and events like the Bondi tragedy is explored, emphasizing the importance of diverse information. Concerns arise that such bans may push kids to unregulated platforms, and parental authority is called into question, raising fears of government overreach and its unintended consequences.

Dec 22, 2025 • 35min
Ep 253: Further Comments on the Bondi Massacre.
The host dissects recent comments from Australian ministers about the Bondi Beach tragedy, raising concerns about the effectiveness of proposed laws. They argue that improved policing, rather than more hate-speech legislation, is crucial for prevention. The reluctance of politicians to name Islamist extremism is criticized, highlighting its risks. The discussion includes education's role in combating antisemitism and doubts are cast on the impact of task forces. The host emphasizes the importance of clear naming of ideologies and systemic failures in addressing these issues.

11 snips
Dec 19, 2025 • 1h 5min
Ep 252: Response to the Prime Minister of Australia
A powerful reaction to the Prime Minister's speech following the Bondi Beach massacre, touching on rising anti-Semitism and the government's responses. Discussions include the need to clearly identify the source of terrorism, particularly Islamism, and the implications of vague hate speech laws. The hosts scrutinize potential legislative reforms, call for increased security measures, and stress the importance of addressing the roots of Jew-hatred. Community responses mix solidarity with instances of online celebration of violence, highlighting a complex societal landscape.

22 snips
Dec 11, 2025 • 31min
Ep 251: OK Doomer!
Dive into a riveting discussion on historical doomsday predictions and modern existential risks, including the looming threat of AI. The conversation highlights the origins of fears surrounding artificial superintelligence and critiques a startling paper on AI-triggered bioweapon scenarios. There's a compelling argument against halting AI research, emphasizing that suppressing knowledge leads to peril. With optimism at its core, the dialogue emphasizes the necessity of continued progress to counteract the evils born from ignorance.

64 snips
Nov 12, 2025 • 4h 19min
Ep 250: The Farthest Reaches - Audiobook
In this thought-provoking discussion, Richard Dawkins, a renowned evolutionary biologist known for his work on gene-centered evolution, dives into the complexities of knowledge and reality. He explores whether the universe can be queerer than we can suppose, challenging listeners to rethink the limits of human understanding. Topics include the significance of explanatory universality, the interplay between culture and biology, and the fluidity of gender identity. Dawkins' insights spark a fascinating conversation about the nature of knowledge and the potential of human inquiry.


