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| Criterion |  UX Design Customer Journey Canvas |  UX Research User Interviews |  Product Discovery Assumption Mapping |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | When a journey needs to be understood across several phases, it arranges experience, touchpoints, and opportunities into one picture. It makes gaps and friction along the user path clear. | 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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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 | 1-3 h | 30–60 min per interview | 45-60 min | 45-90 min |
Participantsdifferent | 3-10 | 1 participant per interview | 2-8 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Customer Journey Canvas, Pain Points, Experience Opportunities | Interview Notes, Themes, Insight Summary | Assumption map, Test backlog, Risk ranking | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | JourneyCustomerService designCanvas | QualitativeResearchCustomerDiscovery | AssumptionsRiskExperimentsValidation | AssumptionsRiskDecisionDiscovery |