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| Criterion |  Decision Making Wideband Delphi |  Operations A3 Problem Solving |  Facilitation Dot Estimation |  Operations Gemba Walk |
|---|---|---|---|---|
Purposedifferent | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. | 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. | 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. |
Complexitydifferent | High | Medium | Low | Low |
Timedifferent | 1-4 h or multiple rounds | 45-90 min | 5-20 min | 30-120 min |
Participantsdifferent | 4-12 Experten | 2-5 | 3-20 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | A3 Report, Action Plan, Root Cause Analysis | Effort Heatmap, Risk Signals, Discussion Targets | Observation Notes, Improvement Ideas |
Tagsno overlap | EstimationExpertsForecasting | LeanProblem solvingCoachingOperations | EstimationEffortRisk | LeanObservationProcessOperations |