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| Criterion |  Product Discovery Pretotyping |  Operations 8D Problem Solving |  Product Discovery Fake Door Test |
|---|---|---|---|
Purposedifferent | 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. | 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. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. |
Complexitydifferent | Low | High | Medium |
Timedifferent | Stunden bis wenige Tage | 1-6 Wochen | 1-5 Tage |
Participantsdifferent | 1-4 | 4-10 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ValidationDemandMVP | QualityProblem solvingRoot cause | ValidationExperimentsDemandDiscovery |
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