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| Criterion |  Operations Fault Tree Analysis |  Product Discovery Riskiest Assumption Test |  Product Discovery Test Card |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
Purposedifferent | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | High | Medium | Low | Medium |
Timedifferent | 2-6 h | 1-2 Wochen pro Iteration | 20-35 min | 45-60 min |
Participantsdifferent | 3-8 | 2-6 | 1-5 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Prioritized Assumption List, Test Plan, Results Report | Test Card with a pre-set threshold | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | RiskRoot causeSafety | ExperimentsValidationDiscoveryAssumptions | ExperimentsValidationDiscoveryHypothesis | AssumptionsRiskExperimentsValidation |