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| Criterion |  UX Research User Interviews |  Decision Making Assumption Surfacing |  Product Discovery Fake Door Test |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | When teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | 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 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 | Low | Medium | Low |
Timedifferent | 30–60 min per interview | 45-90 min | 1-5 Tage | 25-40 min |
Participantsdifferent | 1 participant per interview | 2-8 | Nutzertraffic | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Assumption List, Critical Assumptions, Learning Plan | Click Data, Interest Signal, Learning Decision | Learning Card with evidence and next action |
Tags1 shared | QualitativeResearchCustomerDiscovery | AssumptionsRiskDecisionDiscovery | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryLearning |