Prediction errors drive belief updating

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Karl Friston, FRS, is the architect of the Free Energy Principle and Active Inference, the formal mathematics that describes how living systems perceive, predict, and engage with their environments under uncertainty. In this conversation, Brian "Ponch" Rivera and Mark McGrath walk Friston through John Boyd’s actual OODA sketch, not the linearized four-box version, and the result is the closest thing yet to a formal validation of what Boyd was reaching for in 1995.

The conversation builds the framework from first principles: the irreducible features of the environment, the Markov blanket as the boundary defining a self, the generative model as the cognitive operating system Boyd called orientation, and the two implicit pathways Boyd drew but few have explained. Friston then formalizes what Wall Street intuits: risk as a KL divergence between prior preferences and predicted outcomes, ambiguity as volatility, expected free energy as the mathematics of risk under uncertainty.

The episode also covers perceptual control theory, ecological psychology, predictive versus prospective control, flow states, the Rebus model and psychedelic-assisted therapy, autism and consciousness, the platonic space, and why current large language models cannot orient: they do not encode uncertainty, cannot plan over counterfactual futures, and therefore cannot truly act.

This is the episode the show has been building toward for 163 conversations.

KARL FRISTON, FRS
- UCL Profile: https://profiles.ucl.ac.uk/2747-karl-friston
- Wikipedia: https://en.wikipedia.org/wiki/Karl_J._Friston
- Google Scholar: https://scholar.google.com/citations?user=q_4u0aoAAAAJ

John R. Boyd's Conceptual Spiral was originally titled No Way Out. In his own words: 

“There is no way out unless we can eliminate the features just cited. Since we don’t know how to do this, we must continue the whirl of reorientation…”

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