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| Criterion |  Product Discovery Assumption Mapping |  Operations 8D Problem Solving |  Operations Kepner-Tregoe |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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. | 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. | 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 | Medium | High | High | Low |
Timedifferent | 45-60 min | 1-6 Wochen | 2-8 h | 45-90 min |
Participantsdifferent | 2-8 | 4-10 | 2-8 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Assumption map, Test backlog, Risk ranking | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Problem Analysis, Decision Analysis, Risk Plan | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | AssumptionsRiskExperimentsValidation | QualityProblem solvingRoot cause | Problem solvingRoot causeDecisionOperations | AssumptionsRiskDecisionDiscovery |