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| Criterion |  Operations 5 Whys |  Operations 8D Problem Solving |  Operations Getting Things Done |
|---|---|---|---|
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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. |
Complexitydifferent | Low | High | Medium |
Timedifferent | 15-30 min | 1-6 Wochen | 1-2 h Setup, laufend |
Participantsdifferent | 2-6 | 4-10 | 1 |
Formatdifferent | Workshop | Workshop + async | Async |
Outputdifferent | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Action Lists, Project List, Review Routine |
Tagsno overlap | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause | ProductivityPlanningTasksExecution |
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