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| Criterion |  Agile Specification by Example |  Product Discovery Problem Interview |  Product Discovery Experiment Canvas |  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 the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution. | 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 | Medium | Low | Low |
Timedifferent | 60-90 min pro Feature | 30-60 min je Interview | 30-60 min | 20-35 min |
Participantsdifferent | 3-6 | 5-12 Interviews | 1-5 | 1-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Example Table, Acceptance Tests | Problem Evidence, Risk Notes, Customer Segments | Completed Experiment Canvas, Success Metric | Test Card with a pre-set threshold |
Tagsno overlap | AgileRequirementsExamplesBehavior-Driven Development | DiscoveryInterviewsValidation | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |