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| Criterion |  Operations Root Cause Tree Analysis |  Facilitation World Café |  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 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 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 | 60-180 min | 15-30 min |
Participantsdifferent | 2-8 | 12-100+ | 2-6 |
Formatsame | Workshop | Workshop | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Table Notes, Emergent Themes, Shared Questions | Root cause notes, Countermeasures |
Tagsno overlap | Root causeTreeIncidentQuality | FacilitationDialogueLarge groupSensemaking | Root causeIncidentLeanProblem solving |
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