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| Criterion |  Agile Ideal Days |  Product Discovery Fake Door Test |  Product Discovery Learning Card |
|---|---|---|---|
Purposedifferent | When effort needs to be thought of as real working time, it offers a simple common denominator for comparison. It sorts work by value, risk, and delivery ability. The result is captured as Ideal Day Estimates, Assumption Notes, and Capacity Caveats. | 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. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 15-60 min | 1-5 Tage | 25-40 min |
Participantsdifferent | 2-9 | Nutzertraffic | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Ideal Day Estimates, Assumption Notes, Capacity Caveats | Click Data, Interest Signal, Learning Decision | Learning Card with evidence and next action |
Tagsno overlap | EstimationEffortAgile | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryLearning |
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