A wallet app that retired its “session health” ring
A Bangkok consumer-finance squad arrived with a circular gauge that mixed crash rate, time-on-task, and a survey snippet. After Instrumented Session Quality they split the gauge into three traces and wrote a charter that defined a “clean session” as: no fatal error, primary task completed or explicitly abandoned, and no blocked PII in the replay. Six weeks later they still did not have a single replacement number. They did have a weekly quality review that engineering attended without being summoned.
What did not go smoothly: their capture vendor could not export rage-click timestamps with the fidelity the charter assumed. They documented the gap instead of inventing a workaround score. That limitation paragraph is now copied, with permission, into our flagship FAQ as a teaching example.