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| Criterion |  Operations Fault Tree Analysis |  Systems Thinking Current Reality Tree |  Decision Making Constraint Analysis |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | 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. | 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. |
Complexitydifferent | High | High | Low | Medium |
Timedifferent | 2-6 h | 2-6 h | 30-90 min | 2-4 h |
Participantsdifferent | 3-8 | 3-8 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Current Reality Tree, Core Problems, Intervention Ideas | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | RiskRoot causeSafety | Systems thinkingRoot causeConstraintsCausality | ConstraintsDecisionPlanningOptions | Root causeSafetyIncident |