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| Criterion |  Growth North Star Metric |  Product Discovery Fake Door Test |  Decision Making Assumption Surfacing |  Product Discovery Smoke Test |
|---|---|---|---|---|
Purposedifferent | When product teams track many metrics, the view of the actual customer outcome easily gets lost. A North Star Metric bundles growth, usage, and value contribution into one signal that makes the system's direction visible. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 1-2 h | 1-5 Tage | 45-90 min | 1-5 Tage |
Participantsdifferent | 3-8 | Nutzertraffic | 2-8 | Nutzertraffic |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | North Star metric, Input metric tree, Measurement cadence | Click Data, Interest Signal, Learning Decision | Assumption List, Critical Assumptions, Learning Plan | Interest Metrics, Conversion Signal, Learning Note |
Tagsno overlap | GrowthMetricsAlignmentRetention | ValidationExperimentsDemandDiscovery | AssumptionsRiskDecisionDiscovery | ValidationExperimentsDemandGrowth |