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| Criterion |  Facilitation Dot Estimation |  Product Discovery Smoke Test |  Growth Funnel Analysis |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | 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 many visitors or users drop off along the way, the reason behind the number often stays hidden. Funnel Analysis exposes these transitions and makes visible exactly where the path collapses. | 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 | Medium | Medium |
Timedifferent | 5-20 min | 1-5 Tage | 1-3 h | 1-5 Tage |
Participantsdifferent | 3-20 | Nutzertraffic | 1-5 | Nutzertraffic |
Formatdifferent | Workshop | Async | Async | Async |
Outputdifferent | Effort Heatmap, Risk Signals, Discussion Targets | Interest Metrics, Conversion Signal, Learning Note | Funnel report, Drop-off analysis, Optimization hypotheses | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | EstimationEffortRisk | ValidationExperimentsDemandGrowth | AnalyticsConversionGrowth | ValidationExperimentsDemandDiscovery |