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| Criterion |  Operations Fault Tree Analysis |  Operations 5 Whys |  Innovation Lean Startup |  Operations MORT 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. | 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 uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | 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. |
Complexitydifferent | High | Low | Medium | High |
Timedifferent | 2-6 h | 15-30 min | Wochen bis Monate je Lernzyklus | Mehrere Tage bis Wochen |
Participantsdifferent | 3-8 | 2-6 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Root cause notes, Countermeasures | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tagsno overlap | RiskRoot causeSafety | Root causeIncidentLeanProblem solving | LeanStartupValidationMVP | Root causeSafetySystemicIncident |