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| Criterion |  Product Discovery Learning Card |  Operations 8D Problem Solving |  Growth Growth Experiment |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 growth ideas surface quickly, the temptation to build immediately instead of learning is high. A Growth Experiment frames an assumption so target group, lever, and measurement are clear before the first deployment. | 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 | Medium |
Timedifferent | 25-40 min | 1-6 Wochen | 1-2 Wochen | 1-5 Tage |
Participantsdifferent | 1-5 | 4-10 | 1-6 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Learning Card with evidence and next action | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Experiment card, Result summary, Next bet | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ExperimentsValidationDiscoveryLearning | QualityProblem solvingRoot cause | MarketingGrowthExperimentsLearning | ValidationExperimentsDemandDiscovery |