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| Criterion |  Product Discovery Solution Interview |  Product Discovery Problem Interview |  Systems Thinking Evaporating Cloud |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | 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. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | 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. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 30-60 min je Interview | 30-60 min je Interview | 60-120 min | 45-90 min |
Participantsdifferent | 5-10 Interviews | 5-12 Interviews | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Problem Evidence, Risk Notes, Customer Segments | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | ValidationInterviewsPrototype | DiscoveryInterviewsValidation | Theory of ConstraintsAssumptionsSystems thinking | AssumptionsRiskDecisionDiscovery |