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| Criterion |  Product Discovery Solution Interview |  Decision Making Decision Matrix |  Product Discovery Problem Interview |  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 several options collide with several criteria, comparison quickly becomes subjective. A Decision Matrix makes the trade-off visible and brings weighting, criteria, and options into a shared logic. | 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. | 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 | 45-90 min | 30-60 min je Interview | 45-90 min |
Participantsdifferent | 5-10 Interviews | 2-8 | 5-12 Interviews | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Decision Matrix, Scoring Rationale, Selected Option | Problem Evidence, Risk Notes, Customer Segments | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | ValidationInterviewsPrototype | DecisionCriteriaScoringTradeoffs | DiscoveryInterviewsValidation | AssumptionsRiskDecisionDiscovery |