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| Criterion |  Operations MORT Analysis |  Systems Thinking Stock and Flow Diagram |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | 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. | A Stock and Flow Diagram shows how stocks, inflows, and outflows shape a system over time. It is especially suited when growth, delays, or capacity limits determine the dynamics. | 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. |
Complexitydifferent | High | High | Low |
Timedifferent | Mehrere Tage bis Wochen | 2-6 h | 15-30 min |
Participantsdifferent | 2-6 | 1-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Stock and Flow Model, Dynamics Notes, Simulation Hypotheses | Root cause notes, Countermeasures |
Tagsno overlap | Root causeSafetySystemicIncident | DynamicsSimulationFeedbackSystems thinking | Root causeIncidentLeanProblem solving |
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