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| Criterion |  Innovation TRIZ |  Product Discovery Problem Interview |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | For technical contradictions or trade-offs, the method looks for solutions that resolve opposing requirements at the same time. It translates limits into an explicit picture of conflict that becomes workable. This produces not just compromises but more elegant principles. | 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 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 | High | Medium | Low | Medium |
Timedifferent | 1-4 h | 30-60 min je Interview | 20-35 min | 1-5 Tage |
Participantsdifferent | 2-8 | 5-12 Interviews | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Contradiction Statement, Inventive Principles, Solution Concepts | Problem Evidence, Risk Notes, Customer Segments | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | InnovationProblem solvingContradictionsCreativity | DiscoveryInterviewsValidation | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |