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| Criterion |  Innovation Lean Startup |  Product Discovery Solution Interview |  Product Discovery Learning Card |  Product Discovery Problem Interview |
|---|---|---|---|---|
Purposedifferent | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight 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. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | Wochen bis Monate je Lernzyklus | 30-60 min je Interview | 25-40 min | 30-60 min je Interview |
Participantsdifferent | 2-8 | 5-10 Interviews | 1-5 | 5-12 Interviews |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Solution Feedback, Objection List, Validation Notes | Learning Card with evidence and next action | Problem Evidence, Risk Notes, Customer Segments |
Tags1 shared | LeanStartupValidationMVP | ValidationInterviewsPrototype | ExperimentsValidationDiscoveryLearning | DiscoveryInterviewsValidation |