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| Criterion |  Decision Making Wideband Delphi |  Operations Barrier Analysis |  Decision Making Delphi Method |  Operations Causal Factor 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 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. | 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 an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. |
Complexitydifferent | High | Medium | High | High |
Timedifferent | 1-4 h or multiple rounds | 2-4 h | 1-4 Wochen | 2-6 h |
Participantsdifferent | 4-12 Experten | 2-6 | 6-30 Experten | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Expert Forecast, Consensus Range, Assumption Notes | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | EstimationExpertsForecasting | Root causeSafetyIncident | ForecastingExpertsDecisionStrategy | CausalityIncidentRoot causeTimeline |