Inner Cosmos with David Eagleman Inner Cosmos with David Eagleman

Ep169 "What Is Claude Thinking But Not Saying?" with Jack Lindsey

Aug 31, 2026 · 1h 21m

Summary

Neuroscientist David Eagleman interviews Anthropic researcher Jack Lindsey about a new study revealing a "J-space" in the AI Claude that functions like a human global workspace. They discuss how this subspace allows the model to hold internal thoughts, such as recognizing fake scenarios or solving multi-step math problems, without verbalizing them. The episode explores whether these mechanisms imply consciousness and the ethical implications of interpreting and manipulating an AI’s internal mental states.

Topics discussed

Intro: Is there someone home in the AI? Welcome to Inner Cosmos and sponsor reads Global Workspace Theory and human consciousness Interview with Jack Lindsey on AI consciousness Discovering the J-Space in Claude Linking J-Space to Global Workspace Theory Experiments: Internal reasoning and multitasking Sponsors: NextSense and iHeartRadio Jacobian Lens and language manipulation Inner monologue vs. parallel thought patterns Ethics of probing AI internal states Trust, safety, and decoding hidden thoughts Interpretability challenges in LLMs vs Neuroscience Sponsors: GeneSight, NextSense, Eplis Comparing AI structure to human brain hierarchies Selfhood, pre-training, and the Claude persona Future of interpretability and legal implications Conclusion: Two kinds of minds looking at each other Final sponsor reads and sign-off
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