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| Criterion |  Operations 5 Whys |  Agile Sailboat Retrospective |  Agile 4Ls Retrospective |  Operations Learning Review |
|---|---|---|---|---|
Purposedifferent | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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 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. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. |
Complexitydifferent | Low | Low | Low | Medium |
Timedifferent | 15-30 min | 45-90 min | 45–75 min | 1-3 h |
Participantsdifferent | 2-6 | 4-12 | Team members involved | 3-10 |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Root cause notes, Countermeasures | Sailboat Board, Risks, Improvement Actions | 4Ls Board, Learning Themes, Improvement Actions | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | Root causeIncidentLeanProblem solving | RetrospectiveTeamImprovement | RetrospectiveLearningReflectionTeam | LearningRetrospectiveIncidentOperations |