Simon Willison·· 5 days agoAI score67
Quoting Geoffrey Huntley
Quoting Geoffrey Huntley
AI introduction
Simon Willison cites Geoffrey Huntley's view: if agents don't use his diagnostics library, relying only on checking and updating AGENTS.md still leads to bias and drift.
Article · English
13th October 2026
If the agent isn't using my diagnostics library, I could introspect and update AGENTS.md, but there's still a delta, and it'll drift. Instead, I write a pre-commit hook that checks the git diff for direct calls to observability modules that bypass my diagnostics module. Boom: fail the commit, inject a prompt telling the agent to use the diagnostics library. All of a sudden it's ten out of ten.
— Geoffrey Huntley, nobody should type code by hand anymore. here's what's left.
Source: Simon Willison · simonwillison.net