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| Criterion |  Operations Gemba Walk |  Product Discovery Assumption Mapping |  Growth A/B Testing |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | 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 | Low | Medium | High | Low |
Timedifferent | 30-120 min | 45-60 min | 1-4 Wochen | 45-90 min |
Participantsdifferent | 2-6 | 2-8 | 1-6 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Assumption map, Test backlog, Risk ranking | Experiment results, Decision log, Learning summary | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | LeanObservationProcessOperations | AssumptionsRiskExperimentsValidation | ExperimentsGrowthAnalyticsValidation | AssumptionsRiskDecisionDiscovery |