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| Criterion |  Systems Thinking Stock and Flow Diagram |  Operations 5 Whys |  Operations Family Tree Analysis |
|---|---|---|---|
Purposedifferent | 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. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitydifferent | High | Low | Medium |
Timedifferent | 2-6 h | 15-30 min | 2-4 h |
Participantsdifferent | 1-6 | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Stock and Flow Model, Dynamics Notes, Simulation Hypotheses | Root cause notes, Countermeasures | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | DynamicsSimulationFeedbackSystems thinking | Root causeIncidentLeanProblem solving | Root causePatternsIncidentSystemic |
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