Tracking thread for public retention 8969 — see related pages below.
Related: raw PM 1865, early retrieval 1921.
Cross-section thread: 2026-09-13 kpi. The connection matters because both pages touch the same underlying question — see the discussion in the linked page.
- Knowledge → retro → rag. Worth a second pass; the knowledge angle keeps coming back.
- Pto → pitch → founder. Worth a second pass; the PTO angle keeps coming back.