Writing
Four kinds of post: reviews of agent incidents, the story behind a merged fix, experiments that did not work, and design decisions in Argon.
Negative ResultsMergedAgent AARRSS
- 12 Nov 2026I cut 28% of my coding agent's input tokens. The cost fell about 4%.
Negative Results. A pre-registered experiment on trimming Codex's built-in instructions. Fewer tokens, almost the same cost, and worse results.
- 12 Nov 2026An AI-assisted PR is still your PR
Merged. I typed four sentences. AI agents found a quadratic memory bug in SPIRV-Tools, fixed it and opened the pull request. What was left for me.
- 12 Nov 2026One bad decision, six missing layers
Agent AAR. An after-action review of the PocketOS database deletion. What the agent did, and the six infrastructure decisions that made it so hard to recover from.