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| Criterion |  Product Discovery Solution Interview |  Systems Thinking Future Reality Tree |  Product Discovery Problem Interview |
|---|---|---|---|
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. | 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 the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 30-60 min je Interview | 2-4 h | 30-60 min je Interview |
Participantsdifferent | 5-10 Interviews | 3-8 | 5-12 Interviews |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Solution Feedback, Objection List, Validation Notes | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | ValidationInterviewsPrototype | Theory of ConstraintsSystems thinkingChange | DiscoveryInterviewsValidation |
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