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| Criterion |  Operations Root Cause Tree Analysis |  Operations Kepner-Tregoe |  Decision Making DACI |
|---|---|---|---|
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. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 1-3 h | 2-8 h | 30-60 min |
Participantsdifferent | 2-8 | 2-8 | 2-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Problem Analysis, Decision Analysis, Risk Plan | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | Root causeTreeIncidentQuality | Problem solvingRoot causeDecisionOperations | DecisionRolesGovernanceAlignment |
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