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| Criterion |  Operations Change Analysis |  Operations Fault Tree Analysis |  Product Discovery Experiment Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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 experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | High | Low | Low |
Timedifferent | 45-120 min | 2-6 h | 30-60 min | 20-35 min |
Participantsdifferent | 2-6 | 3-8 | 1-5 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Completed Experiment Canvas, Success Metric | Test Card with a pre-set threshold |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | RiskRoot causeSafety | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |