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| Criterion |  Agile Specification by Example |  Product Discovery Experiment Canvas |  Product Discovery Assumption Mapping |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | When business rules need to become precise, it ties language, example, and test together. It sorts work by value, risk, and delivery ability. The result is captured as an Example Table and Acceptance Tests. | 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 60-90 min pro Feature | 30-60 min | 45-60 min | 20-35 min |
Participantsdifferent | 3-6 | 1-5 | 2-8 | 1-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Example Table, Acceptance Tests | Completed Experiment Canvas, Success Metric | Assumption map, Test backlog, Risk ranking | Test Card with a pre-set threshold |
Tagsno overlap | AgileRequirementsExamplesBehavior-Driven Development | ExperimentsValidationDiscoveryHypothesis | AssumptionsRiskExperimentsValidation | ExperimentsValidationDiscoveryHypothesis |