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| Criterion |  Product Discovery Solution Interview |  Decision Making Pre-Mortem |  Product Discovery Problem Interview |  Decision Making Constraint Analysis |
|---|---|---|---|---|
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. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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. | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 30-60 min je Interview | 20–45 min | 30-60 min je Interview | 30-90 min |
Participantsdifferent | 5-10 Interviews | Small cross-functional group | 5-12 Interviews | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Risk list, Mitigation plan, Assumption log | Problem Evidence, Risk Notes, Customer Segments | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries |
Tagsno overlap | ValidationInterviewsPrototype | RiskDecisionFailurePlanning | DiscoveryInterviewsValidation | ConstraintsDecisionPlanningOptions |