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| Criterion |  Operations 8D Problem Solving |  Systems Thinking Soft Systems Methodology |  Operations Family Tree Analysis |
|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | Soft Systems Methodology helps explore unclear or politically charged problems systematically. Instead of forcing a quick answer, the method builds a shared understanding of perspectives and room for action. | 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 | High | Medium |
Timedifferent | 1-6 Wochen | 0.5-3 Tage | 2-4 h |
Participantsdifferent | 4-10 | 5-15 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Rich Picture, Root Definitions, Conceptual Models, Change Agenda | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | QualityProblem solvingRoot cause | Soft systemsComplexitySensemakingSystems thinking | Root causePatternsIncidentSystemic |
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