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| Criterion |  Operations Accountability Ladder |  UX Research User Interviews |  Product Discovery Problem Interview |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | With defensive reactions to problems, the method shifts the view from justification to ownership. It makes visible which reaction stage a person or team is currently stuck on. | 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. | When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | 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 | Medium | Medium |
Timedifferent | 20-45 min | 30–60 min per interview | 30-60 min je Interview | 1-5 Tage |
Participantsdifferent | 1-8 | 1 participant per interview | 5-12 Interviews | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Ownership Reflection, Action Commitment, Coaching Notes | Interview Notes, Themes, Insight Summary | Problem Evidence, Risk Notes, Customer Segments | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ResponsibilityLeadershipTeam | QualitativeResearchCustomerDiscovery | DiscoveryInterviewsValidation | ValidationExperimentsDemandDiscovery |