FIELD NOTES

WORKING NOTES FROM SYSTEMS THAT RUN IN PRODUCTION.

What we measure, what breaks, and what we still cannot prove — written while building and running our own systems. Numbers first, no frameworks.

2026-09-27 · VERIFICATION

Five to seven days became three. The review is the part that grew.

What agent-written code does to a one-person engineering practice: the numbers I have, the four failure modes I keep hitting, and what I cannot prove yet.