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| Criterion |  Operations 5 Whys |  Operations A3 Problem Solving |  Decision Making Decision Rights Mapping |
|---|---|---|---|
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. | 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. | In organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 15-30 min | 45-90 min | 90-180 min |
Participantsdifferent | 2-6 | 2-5 | 4-12 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Root cause notes, Countermeasures | A3 Report, Action Plan, Root Cause Analysis | Decision Rights Matrix, Agreement |
Tagsno overlap | Root causeIncidentLeanProblem solving | LeanProblem solvingCoachingOperations | DecisionGovernanceAlignmentResponsibility |
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