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| Criterion |  Agile Starfish Retrospective |  Agile Sailboat Retrospective |  Product Discovery Assumption Mapping |  Agile 4Ls Retrospective |
|---|---|---|---|---|
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. | When a team wants to read momentum, brakes, and risks together, it offers an easily understandable picture of the situation. It makes drive, obstacles, and headwind visible in the same picture. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 45-90 min | 45-90 min | 45-60 min | 45–75 min |
Participantsdifferent | 4-12 | 4-12 | 2-8 | Team members involved |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop |
Outputdifferent | Starfish Board, Practice Changes, Experiments | Sailboat Board, Risks, Improvement Actions | Assumption map, Test backlog, Risk ranking | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | RetrospectiveImprovementExperimentsTeam | RetrospectiveTeamImprovement | AssumptionsRiskExperimentsValidation | RetrospectiveLearningReflectionTeam |