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| Criterion |  Product Discovery Test Card |  Agile 4Ls Retrospective |
|---|---|---|
Purposedifferent | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. |
Complexitysame | Low | Low |
Timedifferent | 20-35 min | 45–75 min |
Participantsdifferent | 1-5 | Team members involved |
Formatdifferent | Workshop + async | Workshop |
Outputdifferent | Test Card with a pre-set threshold | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | ExperimentsValidationDiscoveryHypothesis | RetrospectiveLearningReflectionTeam |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
