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| Criterion |  Operations Fault Tree Analysis |  Product Discovery Assumption Mapping |  Operations Family Tree 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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitydifferent | High | Medium | Medium |
Timedifferent | 2-6 h | 45-60 min | 2-4 h |
Participantsdifferent | 3-8 | 2-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Assumption map, Test backlog, Risk ranking | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | RiskRoot causeSafety | AssumptionsRiskExperimentsValidation | Root causePatternsIncidentSystemic |
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