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| Criterion |  Decision Making Assumption Surfacing |  Operations Fault Tree Analysis |  Operations Family Tree Analysis |
|---|---|---|---|
Purposedifferent | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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. | 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 | Low | High | Medium |
Timedifferent | 45-90 min | 2-6 h | 2-4 h |
Participantsdifferent | 2-8 | 3-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | RiskRoot causeSafety | Root causePatternsIncidentSystemic |
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