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| Criterion |  Engineering Failure Scenario Analysis |  Product Discovery Smoke Test |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | 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 | Medium | Low | Low | Medium |
Timedifferent | 1-3 h | 1-5 Tage | 25-40 min | 1-5 Tage |
Participantsdifferent | 3-8 | Nutzertraffic | 1-5 | Nutzertraffic |
Formatdifferent | Workshop | Async | Workshop + async | Async |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Interest Metrics, Conversion Signal, Learning Note | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | FailureResilienceRisk | ValidationExperimentsDemandGrowth | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |