There is a particular kind of relief that arrives when a stubborn problem finally gives way. The logs make sense. The missing condition appears. The system returns to green.
That relief makes it tempting to close the tab and move on. But the moment after the fix is when your understanding is freshest — and when a small note can save the next person an hour of confusion.
Write for the cold reader
A useful map starts before the answer. What did the failure look like? Which signals were misleading? What shortcut made the problem harder to see? A command without context is a breadcrumb. A clear mental model is a route.
Improve the terrain
Sometimes the best documentation is a guardrail: a better error message, a safer default, a check that fails early. If the maze can be simplified, change the maze. If it cannot, leave a map where people naturally look for one.
Operational maturity is shared memory made practical. The system gets kinder each time knowledge stops belonging to only one person.