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| Criterion |  Systems Thinking Future Reality Tree |  Product Discovery Solution Interview |  Decision Making Assumption Surfacing |  Product Discovery Problem Interview |
|---|---|---|---|---|
Purposedifferent | 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 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. | 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. | 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 | High | Medium | Low | Medium |
Timedifferent | 2-4 h | 30-60 min je Interview | 45-90 min | 30-60 min je Interview |
Participantsdifferent | 3-8 | 5-10 Interviews | 2-8 | 5-12 Interviews |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Solution Feedback, Objection List, Validation Notes | Assumption List, Critical Assumptions, Learning Plan | Problem Evidence, Risk Notes, Customer Segments |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | ValidationInterviewsPrototype | AssumptionsRiskDecisionDiscovery | DiscoveryInterviewsValidation |