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| Criterion |  Operations 8D Problem Solving |  Decision Making Three-Point Estimation |  Decision Making Delphi Method |
|---|---|---|---|
Purposedifferent | 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. | 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 knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. |
Complexitydifferent | High | Medium | High |
Timedifferent | 1-6 Wochen | 10-30 min je Item | 1-4 Wochen |
Participantsdifferent | 4-10 | 1-8 | 6-30 Experten |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Three-Point Estimate, Risk Range, Assumption Notes | Expert Forecast, Consensus Range, Assumption Notes |
Tagsno overlap | QualityProblem solvingRoot cause | EstimationUncertaintyForecasting | ForecastingExpertsDecisionStrategy |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
