Blog
Engineering notes.
Most of these posts existed as specs before the code did. Writing them down in public is the point.
- 2026-06-164 min
What we deliberately don't do
Six things this project will refuse to build, the revenue idea each one forecloses, and why changing the list requires a supermajority and a public comment period.
- 2026-05-125 min
Bitemporal honesty for plant data
Late-arriving data meets the monthly report that already went out. Two timelines, as-of queries, and why a correction must never overwrite the value it corrects.
- 2026-04-145 min
The case against silent compression
Exception and compression deviation were a 1995 economics argument. A worked example of a 30-second pressure spike that a 0.5% compdev simply never wrote.
- 2026-03-105 min
Why your totaliser is wrong by 24×
The multiply-by-24 spreadsheet ritual, the days it silently breaks, and how counters should actually be archived: raw monotonic counts, integration at query time.
no bylines — posts are written and reviewed by the project. British English throughout.