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| Criterion |  Operations 8D Problem Solving |  Systems Thinking Evaporating Cloud |  Operations Family Tree Analysis |  Systems Thinking Iceberg Model |
|---|---|---|---|---|
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. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | 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. | The Iceberg Model separates visible events from patterns, structures, and mental models. This turns a single observation into a deeper understanding of why a problem keeps recurring. |
Complexitydifferent | High | Medium | Medium | Low |
Timedifferent | 1-6 Wochen | 60-120 min | 2-4 h | 30-60 min |
Participantsdifferent | 4-10 | 2-8 | 2-6 | 2-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Family Tree Diagram, Pattern Notes, Systemic Measures | Iceberg Worksheet, Pattern Notes, Intervention Ideas |
Tagsno overlap | QualityProblem solvingRoot cause | Theory of ConstraintsAssumptionsSystems thinking | Root causePatternsIncidentSystemic | Systems thinkingRoot causePatterns |