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| Criterion |  Operations Fault Tree Analysis |  Product Discovery Fake Door Test |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|
Purposedifferent | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | 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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | High | Medium | High |
Timedifferent | 2-6 h | 1-5 Tage | 2-6 h |
Participantsdifferent | 3-8 | Nutzertraffic | 3-10 |
Formatdifferent | Workshop + async | Async | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Click Data, Interest Signal, Learning Decision | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | RiskRoot causeSafety | ValidationExperimentsDemandDiscovery | RiskQualityOperationsRoot cause |
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