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| Criterion |  Decision Making Delphi Method |  Decision Making Constraint Analysis |  Operations Barrier Analysis |  Systems Thinking Current Reality Tree |
|---|---|---|---|---|
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 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. |
Complexitydifferent | High | Low | Medium | High |
Timedifferent | 1-4 Wochen | 30-90 min | 2-4 h | 2-6 h |
Participantsdifferent | 6-30 Experten | 2-8 | 2-6 | 3-8 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Current Reality Tree, Core Problems, Intervention Ideas |
Tagsno overlap | ForecastingExpertsDecisionStrategy | ConstraintsDecisionPlanningOptions | Root causeSafetyIncident | Systems thinkingRoot causeConstraintsCausality |