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| Criterion |  Operations After-Action Review |  Knowledge Modeling Feynman Technique |  Operations 5 Whys |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. | The Feynman Technique checks understanding by explaining a topic so that it stays easy for others to understand. It makes knowledge gaps visible before they become costly in everyday work. | 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. | 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 | Low | High |
Timedifferent | 20-45 min | 20-60 min | 15-30 min | 2-8 h |
Participantsdifferent | 3-12 | 1 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Lessons learned, Action items, Event summary | Plain-language Explanation, Knowledge Gaps, Study Notes | Root cause notes, Countermeasures | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | LearningOperationsImprovement | LearningKnowledgeUnderstanding | Root causeIncidentLeanProblem solving | Problem solvingRoot causeDecisionOperations |