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| Criterion |  Systems Thinking Future Reality Tree |  Product Strategy DIBB |  Product Discovery Riskiest Assumption Test |  Product Discovery Test Card |
|---|---|---|---|---|
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. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | High | Low | Medium | Low |
Timedifferent | 2-4 h | 1-2 h | 1-2 Wochen pro Iteration | 20-35 min |
Participantsdifferent | 3-8 | 2-8 | 2-6 | 1-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Future Reality Tree, Negative Branches, Assumption List, Improved Injections | DIBB document, Belief list, Bet list, Learning report | Prioritized Assumption List, Test Plan, Results Report | Test Card with a pre-set threshold |
Tagsno overlap | Theory of ConstraintsSystems thinkingChange | StrategyDecisionAssumptionsHypothesis | ExperimentsValidationDiscoveryAssumptions | ExperimentsValidationDiscoveryHypothesis |