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| Criterion |  Operations 8D Problem Solving |  Facilitation Fishbowl Discussion |  Operations 5 Whys |
|---|---|---|---|
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 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. | 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. |
Complexitydifferent | High | Medium | Low |
Timedifferent | 1-6 Wochen | 45-90 min | 15-30 min |
Participantsdifferent | 4-10 | 8-80 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Discussion Insights, Observed Tensions, Follow-up Questions | Root cause notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | FacilitationDialogueLarge group | Root causeIncidentLeanProblem solving |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
