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| Criterion |  Operations Fishbone Diagram |  Operations Getting Things Done |  Operations 5 Whys |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | With many open commitments and ideas in daily life, a reliable external storage system emerges. The method relieves the mind so priority and context don't have to compete in memory. | 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. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 30-60 min | 1-2 h Setup, laufend | 15-30 min | 45-90 min |
Participantsdifferent | 2-8 | 1 | 2-6 | 2-5 |
Formatdifferent | Workshop | Async | Workshop | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Action Lists, Project List, Review Routine | Root cause notes, Countermeasures | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Root causeQualityOperations | ProductivityPlanningTasksExecution | Root causeIncidentLeanProblem solving | LeanProblem solvingCoachingOperations |