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| Criterion | ![]() Operations 5 Whys | ![]() Agile 4Ls Retrospective | ![]() Operations Kepner-Tregoe |
|---|---|---|---|
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 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. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | Low | Low | High |
Timedifferent | 15-30 min | 45–75 min | 2-8 h |
Participantsdifferent | 2-6 | Team members involved | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | 4Ls Board, Learning Themes, Improvement Actions | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | Root causeIncidentLeanProblem solving | RetrospectiveLearningReflectionTeam | Problem solvingRoot causeDecisionOperations |
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Methods with strong topical overlap with the current selection, not yet in the comparison.






