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| Criterion |  Decision Making Assumption Surfacing |  DevOps Blameless Postmortem |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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. | 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. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 45-90 min | 30-90 min | 25-40 min | 1-5 Tage |
Participantsdifferent | 2-8 | 3-12 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | Postmortem Doc, Action Items, Timeline | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | Site Reliability EngineeringIncidentLearningReliability | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |