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| Criterion |  Product Discovery Learning Card |  Operations Ivy Lee Method |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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 | Low | Medium |
Timedifferent | 25-40 min | 5-10 min daily | 20-35 min | 1-5 Tage |
Participantsdifferent | 1-5 | 1 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Learning Card with evidence and next action | Daily Priority List, Completion Notes | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ExperimentsValidationDiscoveryLearning | PrioritizationProductivityExecution | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |