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| Criterion |  Operations Kepner-Tregoe |  Operations 8D Problem Solving |  Decision Making Assumption Surfacing |
|---|---|---|---|
Purposedifferent | 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. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitydifferent | High | High | Low |
Timedifferent | 2-8 h | 1-6 Wochen | 45-90 min |
Participantsdifferent | 2-8 | 4-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Analysis, Decision Analysis, Risk Plan | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | Problem solvingRoot causeDecisionOperations | QualityProblem solvingRoot cause | AssumptionsRiskDecisionDiscovery |
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