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| Criterion |  Decision Making Pre-Mortem |  Operations MORT Analysis |  Operations 5 Whys |  Operations Fault Tree 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 safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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. |
Complexitydifferent | Low | High | Low | High |
Timedifferent | 20–45 min | Mehrere Tage bis Wochen | 15-30 min | 2-6 h |
Participantsdifferent | Small cross-functional group | 2-6 | 2-6 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Risk list, Mitigation plan, Assumption log | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Root cause notes, Countermeasures | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | RiskDecisionFailurePlanning | Root causeSafetySystemicIncident | Root causeIncidentLeanProblem solving | RiskRoot causeSafety |