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| Criterion |  Decision Making Delphi Method |  Decision Making Constraint Analysis |  Operations MORT Analysis |  Operations Barrier 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. | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. | 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 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. |
Complexitydifferent | High | Low | High | Medium |
Timedifferent | 1-4 Wochen | 30-90 min | Mehrere Tage bis Wochen | 2-4 h |
Participantsdifferent | 6-30 Experten | 2-8 | 2-6 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | ForecastingExpertsDecisionStrategy | ConstraintsDecisionPlanningOptions | Root causeSafetySystemicIncident | Root causeSafetyIncident |