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| Criterion |  Decision Making Wideband Delphi |  Growth A/B Testing |  Product Discovery Smoke Test |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | 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. |
Complexitydifferent | High | High | Low | Medium |
Timedifferent | 1-4 h or multiple rounds | 1-4 Wochen | 1-5 Tage | 1-5 Tage |
Participantsdifferent | 4-12 Experten | 1-6 | Nutzertraffic | Nutzertraffic |
Formatdifferent | Workshop + async | Async | Async | Async |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | Experiment results, Decision log, Learning summary | Interest Metrics, Conversion Signal, Learning Note | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | EstimationExpertsForecasting | ExperimentsGrowthAnalyticsValidation | ValidationExperimentsDemandGrowth | ValidationExperimentsDemandDiscovery |