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| Criterion |  Operations A3 Problem Solving |  Facilitation Dot Estimation |  Operations 5 Whys |
|---|---|---|---|
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. | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | 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. |
Complexitydifferent | Medium | Low | Low |
Timedifferent | 45-90 min | 5-20 min | 15-30 min |
Participantsdifferent | 2-5 | 3-20 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Effort Heatmap, Risk Signals, Discussion Targets | Root cause notes, Countermeasures |
Tagsno overlap | LeanProblem solvingCoachingOperations | EstimationEffortRisk | Root causeIncidentLeanProblem solving |
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