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| Criterion |  Product Discovery Learning Card |  Product Discovery Fake Door Test |  DevOps Blameless Postmortem |
|---|---|---|---|
Purposedifferent | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 25-40 min | 1-5 Tage | 30-90 min |
Participantsdifferent | 1-5 | Nutzertraffic | 3-12 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery | Site Reliability EngineeringIncidentLearningReliability |
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