Imagination doesn’t arrive empty-handed. Anyone who has shipped enough work carries a private library — of bugs once seen, edges once tripped over, small specific ways this team or this product tends to break. Most of it lives below the level of words. It surfaces as a hunch. A reluctance. A small “wait, let me check one thing.” Under pressure, that library is more useful than any wiki. The test plan in the document is generic; the one in your memory is yours. The hardest part of the job isn’t running the tests. It’s trusting what you already know.

A few posts ago, I was reviewing a small search update and almost signed off. Then a memory surfaced, unbidden — a similar update months earlier had broken the "no results" empty state, and no one caught it for a full day because the happy path looked fine. I went back, typed in a string I knew would return nothing, and there it was: the same shape of bug in a different corner of the code. I hadn't written that test case down anywhere. The memory was the test case.

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Until next time,
Tina
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