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| Criterion |  Operations 8D Problem Solving |  Facilitation World Café |  Operations Root Cause 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. | When a group needs to connect many viewpoints in a short time, World Café creates a calm alternation between closeness and rotation. It sets thinking in motion without forcing the conversation into full-plenary rigidity. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | High | Medium | Medium |
Timedifferent | 1-6 Wochen | 60-180 min | 1-3 h |
Participantsdifferent | 4-10 | 12-100+ | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Table Notes, Emergent Themes, Shared Questions | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | FacilitationDialogueLarge groupSensemaking | Root causeTreeIncidentQuality |
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