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| Criterion |  Operations Kaizen Event |  Decision Making Delphi Method |  Operations Root Cause Analysis |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | 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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | 0.5-5 Tage | 1-4 Wochen | 1-4 h | 1-6 Wochen |
Participantsdifferent | 4-10 | 6-30 Experten | 3-8 | 4-10 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop + async |
Outputdifferent | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Expert Forecast, Consensus Range, Assumption Notes | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | LeanContinuous improvementOperations | ForecastingExpertsDecisionStrategy | Root causeProblem solvingQualityIncident | QualityProblem solvingRoot cause |