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| Criterion |  Operations Gemba Walk |  Product Discovery Assumption Mapping |  Decision Making Assumption Surfacing |  Product Discovery Learning Card |
|---|---|---|---|---|
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. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Low | Medium | Low | Low |
Timedifferent | 30-120 min | 45-60 min | 45-90 min | 25-40 min |
Participantsdifferent | 2-6 | 2-8 | 2-8 | 1-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Assumption map, Test backlog, Risk ranking | Assumption List, Critical Assumptions, Learning Plan | Learning Card with evidence and next action |
Tagsno overlap | LeanObservationProcessOperations | AssumptionsRiskExperimentsValidation | AssumptionsRiskDecisionDiscovery | ExperimentsValidationDiscoveryLearning |