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| Criterion |  Innovation Contradiction Analysis |  Product Discovery Problem Interview |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When a system should improve while another measure suffers as a result, the method makes the underlying conflict precisely formulable. It separates the desired effect from its side effect. This makes solutions possible that address the contradiction deliberately instead of half-heartedly. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 | Medium | Medium | Low | Medium |
Timedifferent | 60-120 min | 30-60 min je Interview | 25-40 min | 1-5 Tage |
Participantsdifferent | 2-8 | 5-12 Interviews | 1-5 | Nutzertraffic |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Async |
Outputdifferent | Contradiction Statement, Abstraction Notes, Solution Principles, Concept Ideas | Problem Evidence, Risk Notes, Customer Segments | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ContradictionsInnovationProblem solving | DiscoveryInterviewsValidation | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |