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| Criterion |  Product Discovery Fake Door Test |  Operations Getting Things Done |  Product Discovery Smoke Test |
|---|---|---|---|
Purposedifferent | 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. | With many open commitments and ideas in daily life, a reliable external storage system emerges. The method relieves the mind so priority and context don't have to compete in memory. | 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 |
Timedifferent | 1-5 Tage | 1-2 h Setup, laufend | 1-5 Tage |
Participantsdifferent | Nutzertraffic | 1 | Nutzertraffic |
Formatsame | Async | Async | Async |
Outputdifferent | Click Data, Interest Signal, Learning Decision | Action Lists, Project List, Review Routine | Interest Metrics, Conversion Signal, Learning Note |
Tagsno overlap | ValidationExperimentsDemandDiscovery | ProductivityPlanningTasksExecution | ValidationExperimentsDemandGrowth |
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