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| Criterion |  Operations Root Cause Tree Analysis |  Decision Making DACI |  Operations Kepner-Tregoe |
|---|---|---|---|
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. | 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. | 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. |
Complexitydifferent | Medium | Low | High |
Timedifferent | 1-3 h | 30-60 min | 2-8 h |
Participantsdifferent | 2-8 | 2-10 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | DACI Matrix, Decision Owner, Decision Log | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | Root causeTreeIncidentQuality | DecisionRolesGovernanceAlignment | Problem solvingRoot causeDecisionOperations |
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