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| Criterion |  Agile Starfish Retrospective |  Product Discovery Learning Card |  Agile Start Stop Continue |  Product Discovery Experiment Canvas |
|---|---|---|---|---|
Purposedifferent | When improvement options need to be sorted more finely than just start and stop, it brings observations into clear kinds of action. This makes visible what should be done more, less, newly, or continued. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When a team wants to deliberately adjust its working behavior, it makes habits visible and assessable. It focuses on concrete changes instead of diffuse mood. | 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. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 45-90 min | 25-40 min | 30-60 min | 30-60 min |
Participantsdifferent | 4-12 | 1-5 | 3-12 | 1-5 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Starfish Board, Practice Changes, Experiments | Learning Card with evidence and next action | Start Stop Continue Board, Improvement Actions | Completed Experiment Canvas, Success Metric |
Tagsno overlap | RetrospectiveImprovementExperimentsTeam | ExperimentsValidationDiscoveryLearning | RetrospectiveImprovementTeamReflection | ExperimentsValidationDiscoveryHypothesis |