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| Criterion |  Operations Fault Tree Analysis |  Operations Fishbone Diagram |  Product Discovery Smoke Test |
|---|---|---|---|
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 a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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. |
Complexitydifferent | High | Low | Low |
Timedifferent | 2-6 h | 30-60 min | 1-5 Tage |
Participantsdifferent | 3-8 | 2-8 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop | Async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Fishbone Diagram, Cause Categories, Investigation Backlog | Interest Metrics, Conversion Signal, Learning Note |
Tagsno overlap | RiskRoot causeSafety | Root causeQualityOperations | ValidationExperimentsDemandGrowth |
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