Lucid — Read the machine's mind

Earthpilot Laboratory explorewriteresearchsurgerymethods File No. J-001 · Est. 2026

Instrument · Lucid Read themachine's mind. Lucid watches a language model think. It reads the concepts a model holds before it speaks, layer by layer, using the Jacobian lens. or hover a card below

Fig. 1 — The model was shown a card. The lens read its answer four layers before it spoke.

The instrument A lens for the space between input and answer. Every language model carries a small, privileged set of internal representations. Concepts it can report, redirect, and reason with. Anthropic calls this the J-space. It behaves like the global workspace that cognitive scientists have proposed sits behind human conscious access. Lucid puts the Jacobian lens in your browser. Type a prompt. Watch which concepts enter the workspace, at which layer, and which ones the model holds but never says. The cards are not a joke. Zener cards were the first standardized attempt to test whether one mind could know the contents of another. We kept the cards and replaced the guesswork.

The protocol Run the experiment yourself. The public instrument runs on small open models. The lens is fit once per model. Reading it costs a single forward pass. SubjectsQwen 0.5B – 3B, Pythia 1.4B. More on request. StimulusAny prompt you type. ReadingTop concepts per layer and position, with rank tracking for pinned tokens. RecordEvery session exports as a shareable slice page.

Access The reading room is open. No account, no install. Bring a question you would ask a mind if you could see inside one.