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| Criterion |  Operations 8D Problem Solving |  Operations Root Cause Tree Analysis |  Facilitation Fishbowl Discussion |  Facilitation World Café |
|---|---|---|---|---|
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. | 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. | When a controversial topic needs depth and discipline at the same time, Fishbowl Discussion makes the structure of the conversation transparent. The format keeps the core small enough for real dialogue and open enough for controlled turnover. | 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. |
Complexitydifferent | High | Medium | Medium | Medium |
Timedifferent | 1-6 Wochen | 1-3 h | 45-90 min | 60-180 min |
Participantsdifferent | 4-10 | 2-8 | 8-80 | 12-100+ |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Cause Tree, Evidence Notes, Countermeasures | Discussion Insights, Observed Tensions, Follow-up Questions | Table Notes, Emergent Themes, Shared Questions |
Tagsno overlap | QualityProblem solvingRoot cause | Root causeTreeIncidentQuality | FacilitationDialogueLarge group | FacilitationDialogueLarge groupSensemaking |