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| Criterion |  Operations Fault Tree Analysis |  Decision Making Assumption Surfacing |  Innovation Brainstorming |
|---|---|---|---|
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. | 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. | When a team faces an open question with many obvious directions, the method first creates breadth instead of premature commitment. It separates idea flow from evaluation and makes lines of thought visible, creating a pool for selection and further development. |
Complexitydifferent | High | Low | Low |
Timedifferent | 2-6 h | 45-90 min | 30-60 min |
Participantsdifferent | 3-8 | 2-8 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Assumption List, Critical Assumptions, Learning Plan | Idea pool, Theme clusters, Shortlist |
Tagsno overlap | RiskRoot causeSafety | AssumptionsRiskDecisionDiscovery | BrainstormingIdeationCreativityWorkshopDivergence |
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