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| Criterion |  Decision Making Wideband Delphi |  Decision Making Three-Point Estimation |  Operations Gemba Walk |  Operations A3 Problem Solving |
|---|---|---|---|---|
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. | A single estimate for effort, time, or risk often looks too smooth for the real uncertainty behind it. It separates options, evaluation criteria, and open risks. The result is captured as a Three-Point Estimate, Risk Range, and Assumption Notes. | 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. | 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 | High | Medium | Low | Medium |
Timedifferent | 1-4 h or multiple rounds | 10-30 min je Item | 30-120 min | 45-90 min |
Participantsdifferent | 4-12 Experten | 1-8 | 2-6 | 2-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | Three-Point Estimate, Risk Range, Assumption Notes | Observation Notes, Improvement Ideas | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | EstimationExpertsForecasting | EstimationUncertaintyForecasting | LeanObservationProcessOperations | LeanProblem solvingCoachingOperations |