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| Criterion |  Operations 8D Problem Solving |  Decision Making Delphi Method |  Decision Making Wideband Delphi |
|---|---|---|---|
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. | 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. | 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. |
Complexitysame | High | High | High |
Timedifferent | 1-6 Wochen | 1-4 Wochen | 1-4 h or multiple rounds |
Participantsdifferent | 4-10 | 6-30 Experten | 4-12 Experten |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Expert Forecast, Consensus Range, Assumption Notes | Estimate Range, Assumption Log, Expert Consensus Notes |
Tagsno overlap | QualityProblem solvingRoot cause | ForecastingExpertsDecisionStrategy | EstimationExpertsForecasting |
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