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| Criterion |  Operations ABC Analysis |  Decision Making Assumption Surfacing |  Operations 5 Whys |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | With many similar objects of differing economic significance, the method prioritizes effort by effect. It separates what needs regular steering from what rarely needs attention. | 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. | 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. | 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 | Low | Low | Low | High |
Timedifferent | 30-60 min | 45-90 min | 15-30 min | 2-8 h |
Participantsdifferent | 1-5 | 2-8 | 2-6 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | ABC Classification, Focus Rules, Control List | Assumption List, Critical Assumptions, Learning Plan | Root cause notes, Countermeasures | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | PrioritizationOperationsPortfolio | AssumptionsRiskDecisionDiscovery | Root causeIncidentLeanProblem solving | Problem solvingRoot causeDecisionOperations |