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| Criterion |  Product Discovery Solution Interview |  Delivery Cost of Delay |  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. | Helps clarify scope, order, and delivery flow in concrete terms. It makes work, constraints, and sequence manageable. The result is captured as a Cost of Delay table and prioritization sequence. | 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 | High | Medium | Low |
Timedifferent | 30-60 min je Interview | 90-180 min | 30-60 min je Interview | 45-90 min |
Participantsdifferent | 5-10 Interviews | 3-8 | 5-12 Interviews | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | CoD Table, Prioritization Sequence | Problem Evidence, Risk Notes, Customer Segments | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | ValidationInterviewsPrototype | PrioritizationDeliveryEconomicsDecision | DiscoveryInterviewsValidation | AssumptionsRiskDecisionDiscovery |