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| Criterion |  Product Discovery Smoke Test |  Product Discovery Fake Door Test |  Product Discovery Learning Card |  Growth Growth Experiment |
|---|---|---|---|---|
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. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 1-5 Tage | 1-5 Tage | 25-40 min | 1-2 Wochen |
Participantsdifferent | Nutzertraffic | Nutzertraffic | 1-5 | 1-6 |
Formatdifferent | Async | Async | Workshop + async | Workshop + async |
Outputdifferent | Interest Metrics, Conversion Signal, Learning Note | Click Data, Interest Signal, Learning Decision | Learning Card with evidence and next action | Experiment card, Result summary, Next bet |
Tags1 shared | ValidationExperimentsDemandGrowth | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryLearning | MarketingGrowthExperimentsLearning |