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| Criterion |  Product Discovery Smoke Test |  Product Discovery Learning Card |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When demand only needs to be roughly verified, it tests interest with minimal effort. It measures whether people would take a next step at all. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 | Low | Low | Medium |
Timedifferent | 1-5 Tage | 25-40 min | 20-35 min | 1-5 Tage |
Participantsdifferent | Nutzertraffic | 1-5 | 1-5 | Nutzertraffic |
Formatdifferent | Async | Workshop + async | Workshop + async | Async |
Outputdifferent | Interest Metrics, Conversion Signal, Learning Note | Learning Card with evidence and next action | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tags2 shared | ValidationExperimentsDemandGrowth | ExperimentsValidationDiscoveryLearning | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |