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| Criterion |  Decision Making Assumption Surfacing |  Operations Change Analysis |  Operations 5 Whys |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | 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 deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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 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. |
Complexitydifferent | Low | Medium | Low | High |
Timedifferent | 45-90 min | 45-120 min | 15-30 min | 1-6 Wochen |
Participantsdifferent | 2-8 | 2-6 | 2-6 | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | ChangeRoot causeTroubleshootingComparison | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause |