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| Criterion |  Product Discovery Experiment Canvas |  Agile Start Stop Continue |  Agile 4Ls Retrospective |  Agile Starfish Retrospective |
|---|---|---|---|---|
Purposedifferent | 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 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 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. | 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. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 30-60 min | 30-60 min | 45–75 min | 45-90 min |
Participantsdifferent | 1-5 | 3-12 | Team members involved | 4-12 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Completed Experiment Canvas, Success Metric | Start Stop Continue Board, Improvement Actions | 4Ls Board, Learning Themes, Improvement Actions | Starfish Board, Practice Changes, Experiments |
Tagsno overlap | ExperimentsValidationDiscoveryHypothesis | RetrospectiveImprovementTeamReflection | RetrospectiveLearningReflectionTeam | RetrospectiveImprovementExperimentsTeam |