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| Criterion |  UX Research User Interviews |  Decision Making Assumption Surfacing |  Decision Making DACI |
|---|---|---|---|
Purposedifferent | 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. | 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. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. |
Complexitysame | Low | Low | Low |
Timedifferent | 30–60 min per interview | 45-90 min | 30-60 min |
Participantsdifferent | 1 participant per interview | 2-8 | 2-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Assumption List, Critical Assumptions, Learning Plan | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | QualitativeResearchCustomerDiscovery | AssumptionsRiskDecisionDiscovery | DecisionRolesGovernanceAlignment |
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