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| Criterion |  Decision Making Wideband Delphi |  Operations Root Cause Tree Analysis |  Decision Making Three-Point Estimation |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | A single estimate for effort, time, or risk often looks too smooth for the real uncertainty behind it. It separates options, evaluation criteria, and open risks. The result is captured as a Three-Point Estimate, Risk Range, and Assumption Notes. | 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 | Medium | Medium | Medium |
Timedifferent | 1-4 h or multiple rounds | 1-3 h | 10-30 min je Item | 2-4 h |
Participantsdifferent | 4-12 Experten | 2-8 | 1-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | Cause Tree, Evidence Notes, Countermeasures | Three-Point Estimate, Risk Range, Assumption Notes | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | EstimationExpertsForecasting | Root causeTreeIncidentQuality | EstimationUncertaintyForecasting | Root causeSafetyIncident |