ideasthesia

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Ryan Collison

I write about cool science and share it here.

Mind embedded in environmental structure—cognition scaffolded by world

Embedded Cognition: Mind in Context

Series: 4E Cognition | Part: 3 of 9 A chess grandmaster glances at a board mid-game and sees not pieces but possibilities—threats, tactics, strategic imbalances. A novice sees the same physical configuration but perceives something entirely different: isolated pieces in arbitrary positions. What changed? Not the board. Not the

Body as cognitive architecture—neural patterns flowing through physical form

Embodied Cognition: Why Bodies Shape Minds

Series: 4E Cognition | Part: 2 of 9 There’s a moment in learning to drive stick shift when the clutch stops being a mechanical problem and becomes part of your body. You stop thinking about the pedal and start thinking through it. The boundary between you and machine blurs. Your

Body-environment coupling with sensorimotor loops extending from neural patterns into world

Mind Beyond the Brain: The 4E Revolution in Cognitive Science

Series: 4E Cognition | Part: 1 of 9 For most of the twentieth century, cognitive science had a brain problem. Not a lack of brains to study—plenty of those—but a tendency to look only at what happened inside the skull and call everything else “environment.” Cognition was computation. Thinking

Free energy landscapes converging with coherence geometry—the mathematical unification

Synthesis: The Free Energy Principle and the Geometry of Coherence

Synthesis: The Free Energy Principle and the Geometry of Coherence Series: The Free Energy Principle | Part: 10 of 11 We've spent nine articles unpacking the Free Energy Principle—what it claims, how it works, where it applies, and where it breaks. Now it's time to connect

Active inference agent navigating environment through prediction and action

FEP Implementations: From Theory to Working Systems

FEP Implementations: From Theory to Working Systems Series: The Free Energy Principle | Part: 9 of 11 Theory is elegant. Implementation is messy. The Free Energy Principle makes beautiful claims: brains minimize surprise, action fulfills predictions, hierarchical models process the world. But does the math actually work when you try to

Theoretical framework under scrutiny—stress testing the Free Energy Principle claims

Critics and Controversies: What FEP Gets Wrong (Maybe)

Critics and Controversies: What FEP Gets Wrong (Maybe) Series: The Free Energy Principle | Part: 8 of 11 The Free Energy Principle has been called the most important idea in neuroscience. It's also been called unfalsifiable, circular, and so general as to be meaningless. Both assessments come from serious

Scale-invariant free energy minimization from molecules to ecosystems to societies

Beyond Biology: FEP as a Theory of Everything That Persists

Beyond Biology: FEP as a Theory of Everything That Persists Series: The Free Energy Principle | Part: 7 of 11 Karl Friston didn't set out to explain brains. He set out to explain anything that maintains its structure over time. Brains are a special case—sophisticated, hierarchical, with exquisite