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| Criterion |  Operations Root Cause Tree Analysis |  Facilitation Fishbowl Discussion |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | 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. | 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 | Medium | Medium | Low |
Timedifferent | 1-3 h | 45-90 min | 15-30 min |
Participantsdifferent | 2-8 | 8-80 | 2-6 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Discussion Insights, Observed Tensions, Follow-up Questions | Root cause notes, Countermeasures |
Tagsno overlap | Root causeTreeIncidentQuality | FacilitationDialogueLarge group | Root causeIncidentLeanProblem solving |
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