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| Criterion |  UX Research Diary Study |  Systems Thinking Evaporating Cloud |  Product Discovery Fake Door Test |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 1-4 Wochen | 60-120 min | 1-5 Tage | 45-60 min |
Participantsdifferent | 5-20 | 2-8 | Nutzertraffic | 2-8 |
Formatdifferent | Async | Workshop | Async | Workshop + async |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Click Data, Interest Signal, Learning Decision | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | UX researchTrackingBehavior | Theory of ConstraintsAssumptionsSystems thinking | ValidationExperimentsDemandDiscovery | AssumptionsRiskExperimentsValidation |