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| Criterion |  Decision Making Delphi Method |  Operations 5 Whys |  Operations MORT Analysis |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | High | Low | High | High |
Timedifferent | 1-4 Wochen | 15-30 min | Mehrere Tage bis Wochen | 2-8 h |
Participantsdifferent | 6-30 Experten | 2-6 | 2-6 | 2-8 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Root cause notes, Countermeasures | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | ForecastingExpertsDecisionStrategy | Root causeIncidentLeanProblem solving | Root causeSafetySystemicIncident | Problem solvingRoot causeDecisionOperations |