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| Criterion |  Operations A3 Problem Solving |  Operations Causal Factor Analysis |  Operations Kepner-Tregoe |
|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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 | Medium | High | High |
Timedifferent | 45-90 min | 2-6 h | 2-8 h |
Participantsdifferent | 2-5 | 3-10 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | LeanProblem solvingCoachingOperations | CausalityIncidentRoot causeTimeline | Problem solvingRoot causeDecisionOperations |
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