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| Criterion |  Decision Making Decision Matrix |  UX Research User Interviews |  Product Discovery Opportunity Interview |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | 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 teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | When opportunities are still hidden behind signals of need, it structures conversations around needs and obstacles. It looks for patterns that lead to new product opportunities. | 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 | Low | Medium | Low |
Timedifferent | 45-90 min | 30–60 min per interview | 30-60 min je Interview | 45-90 min |
Participantsdifferent | 2-8 | 1 participant per interview | 5-12 Interviews | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Decision Matrix, Scoring Rationale, Selected Option | Interview Notes, Themes, Insight Summary | Interview Notes, Opportunity Themes, Customer Quotes | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | DecisionCriteriaScoringTradeoffs | QualitativeResearchCustomerDiscovery | DiscoveryInterviewsOpportunityCustomer | AssumptionsRiskDecisionDiscovery |