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| Criterion |  UX Research User Interviews |  Systems Thinking Future Reality Tree |  Domain Modeling EventStorming |  Systems Thinking Evaporating Cloud |
|---|---|---|---|---|
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. | A Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. | When a domain consists of many events, rules, and states, it creates a shared modeling space for the team. It bundles language, flows, and boundaries before domain knowledge fragments into siloed views. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. |
Complexitydifferent | Low | High | Medium | Medium |
Timedifferent | 30–60 min per interview | 2-4 h | 2-8 h | 60-120 min |
Participantsdifferent | 1 participant per interview | 3-8 | 5-12 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Interview Notes, Themes, Insight Summary | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Event Timeline, Ubiquitous Language, Boundaries, Open Questions | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments |
Tagsno overlap | QualitativeResearchCustomerDiscovery | Theory of ConstraintsSystems thinkingChange | Domain-Driven DesignEventsDiscoveryWorkshop | Theory of ConstraintsAssumptionsSystems thinking |