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| Criterion |  Engineering Hypothesis-Driven Troubleshooting |  Innovation Lean Startup |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 | Medium | Low | Medium |
Timedifferent | 30-240 min | Wochen bis Monate je Lernzyklus | 20-35 min | 1-5 Tage |
Participantsdifferent | 1-6 | 2-8 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | TroubleshootingProblem solvingDiagnosis | LeanStartupValidationMVP | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |