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| Criterion |  Product Discovery Solution Interview |  UX Research Surveys |  Systems Thinking Future Reality Tree |  Innovation Design Thinking |
|---|---|---|---|---|
Purposedifferent | When a solution idea is already on the table, it checks how it is understood and evaluated. It looks for resonance, objections, and missing fit early in the conversation. | When a topic needs to be validated broadly and many people can answer the same question, surveys gather structured feedback in a scalable form. Answers become comparable and segmentable instead of remaining merely anecdotal. | 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. | For complex user problems with an uncertain cause, the method connects observation, interpretation, and experiment into a learning cycle. It keeps the focus on real needs and avoids premature solution language. This produces robust decisions for product and service. |
Complexitydifferent | Medium | Medium | High | High |
Timedifferent | 30-60 min je Interview | 3-14 Tage | 2-4 h | 1 Tag bis mehrere Wochen |
Participantsdifferent | 5-10 Interviews | 50+ | 3-8 | 4-10 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Survey Results, Charts, Segment Insights | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Problem Statement, Prototype, Test Learnings |
Tagsno overlap | ValidationInterviewsPrototype | QuantitativeResearchValidation | Theory of ConstraintsSystems thinkingChange | InnovationPrototypeResearch |