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| Criterion |  Operations Gemba Walk |  Operations Standard Work Analysis |  Facilitation Dot Estimation |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | When the same task is done differently depending on the person, the method exposes the reliable core. It creates comparability without unnecessarily choking off needed latitude. | 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 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 | 30-120 min | 1-3 h | 5-20 min | 45-90 min |
Participantsdifferent | 2-6 | 2-6 | 3-20 | 2-5 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Standard Work Sheet, Deviation List, Improved Standard, Training Needs | Effort Heatmap, Risk Signals, Discussion Targets | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | LeanObservationProcessOperations | LeanProcessQuality | EstimationEffortRisk | LeanProblem solvingCoachingOperations |