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| Criterion |  Systems Thinking Future Reality Tree |  Product Discovery Test Card |  Systems Thinking Evaporating Cloud |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | High | Low | Medium | Medium |
Timedifferent | 2-4 h | 20-35 min | 60-120 min | 45-60 min |
Participantsdifferent | 3-8 | 1-5 | 2-8 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | Test Card with a pre-set threshold | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | ExperimentsValidationDiscoveryHypothesis | Theory of ConstraintsAssumptionsSystems thinking | AssumptionsRiskExperimentsValidation |