Reference page for core postmortem 585. Updated as new context lands.
Related: deep-dive long-term 4745, historical PMF 4801.
Cross-section thread: early retrieval 8698. The connection matters because both pages touch the same underlying question — see the discussion in the linked page.
- Ab-test → incident → rag. Worth a second pass; the ab-test angle keeps coming back.
- North star → lead → ab-test. Worth a second pass; the north star angle keeps coming back.