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| Criterion |  Decision Making Pre-Mortem |  Operations Fault Tree Analysis |  Decision Making Decision Tree |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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 decisions with follow-on paths and dependencies, a linear comparison is often not enough. A Decision Tree shows how options branch under conditions and which consequences hang on each branch. | 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 | Low | High | Medium | High |
Timedifferent | 20–45 min | 2-6 h | 30-90 min | 2-6 h |
Participantsdifferent | Small cross-functional group | 3-8 | 1-6 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Risk list, Mitigation plan, Assumption log | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Decision Tree, Option Map, Assumption List | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | RiskDecisionFailurePlanning | RiskRoot causeSafety | DecisionTreeOptions | RiskQualityOperationsRoot cause |