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| Criterion |  Decision Making Delphi Method |  Operations Barrier Analysis |  Systems Thinking Current Reality Tree |  Operations MORT Analysis |
|---|---|---|---|---|
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 risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | 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. |
Complexitydifferent | High | Medium | High | High |
Timedifferent | 1-4 Wochen | 2-4 h | 2-6 h | Mehrere Tage bis Wochen |
Participantsdifferent | 6-30 Experten | 2-6 | 3-8 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Current Reality Tree, Core Problems, Intervention Ideas | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tagsno overlap | ForecastingExpertsDecisionStrategy | Root causeSafetyIncident | Systems thinkingRoot causeConstraintsCausality | Root causeSafetySystemicIncident |