01 I instrument before I theorise.
When a live agent was talking too much, I pulled the real conversation turns before touching a line of the persona. The filler I’d written to mask slow replies was firing on nearly every one of them. I had written the symptom myself.
02 I fix the reason a bug was hard to see.
An audio fault survived two calls because every log line was sitting in an unflushed buffer. I shipped the observability fix in the same pass as the bug.
03 I write the guardrail before I need it.
The rules I set while thinking clearly have since refused me while I wasn’t — including once when I explicitly told a system to stand down and it declined. That is the feature working.
04 I test the tests.
A green regression bank told me a system was healthy while its live path was broken, because the harness fed inputs the real wire never delivered.
05 I publish my own debt.
Uncalibrated numbers get labelled uncalibrated, prototypes get called prototypes, and the gaps sit next to the wins.
None of this is theory I read. It is all the residue of something
breaking while I was responsible for it.