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| Criterion |  Operations Gemba Walk |  Product Strategy ICE Scoring |  Product Discovery Assumption Mapping |
|---|---|---|---|
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 ideas need sorting quickly, it condenses impact, confidence, and effort into one compact score. It connects customer value, product logic, and decision priorities. The result is captured as an ICE table and top-ideas list. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 30-120 min | 30-60 min | 45-60 min |
Participantsdifferent | 2-6 | 2-8 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | ICE Table, Top Idea List | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | LeanObservationProcessOperations | PrioritizationScoringGrowthDecision | AssumptionsRiskExperimentsValidation |
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