Notes on 2026-09-21 training. Picked back up after the last review.
Related: 2024-01-17 series-a, 2026-09-17 demo.
Cross-section thread: public retrieval 5199. The connection matters because both pages touch the same underlying question — see the discussion in the linked page.
- Learning → rollback → candidate. Worth a second pass; the learning angle keeps coming back.
- Ship → PMF → ab-test. Worth a second pass; the ship angle keeps coming back.
- Rerank → prompt → ICP. Worth a second pass; the rerank angle keeps coming back.
Decisions: shipped the feature flag, rolled back the SLO tweak, queued the postmortem for next week.