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| Criterion |  Operations A3 Problem Solving |  Product Discovery Pretotyping |  Operations Gemba Walk |
|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | Pretotyping clarifies whether a customer problem and solution idea create enough real demand. It separates problem, assumption, solution, and evidence, and captures the result as a pretotyping sketch, test setup, and conversion data. | 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. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 45-90 min | Stunden bis wenige Tage | 30-120 min |
Participantsdifferent | 2-5 | 1-4 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision | Observation Notes, Improvement Ideas |
Tagsno overlap | LeanProblem solvingCoachingOperations | ValidationDemandMVP | LeanObservationProcessOperations |
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