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| Criterion |  Innovation Design Thinking |  Decision Making Assumption Surfacing |  Product Discovery Solution Interview |  Product Discovery Problem Interview |
|---|---|---|---|---|
Purposedifferent | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. | 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 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. | 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 | High | Low | Medium | Medium |
Timedifferent | 1 Tag bis mehrere Wochen | 45-90 min | 30-60 min je Interview | 30-60 min je Interview |
Participantsdifferent | 4-10 | 2-8 | 5-10 Interviews | 5-12 Interviews |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Problem Statement, Prototype, Test Learnings | Assumption List, Critical Assumptions, Learning Plan | Solution Feedback, Objection List, Validation Notes | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | InnovationPrototypeResearch | AssumptionsRiskDecisionDiscovery | ValidationInterviewsPrototype | DiscoveryInterviewsValidation |