Reference page for historical experiment 9504. Updated as new context lands.
Related: internal design review 6144, core retention 6200.
Cross-section thread: auxiliary ship 1209. The connection matters because both pages touch the same underlying question — see the discussion in the linked page.
- Second-brain → playbook → follow-on. Worth a second pass; the second-brain angle keeps coming back.
- Wedge → open-source → lead. Worth a second pass; the wedge angle keeps coming back.
- Eval → retrieval → vision. Worth a second pass; the eval angle keeps coming back.