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| Criterion |  Operations Change Analysis |  Decision Making Constraint Analysis |  Operations Barrier Analysis |  Systems Thinking Current Reality Tree |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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 | Medium | Low | Medium | High |
Timedifferent | 45-120 min | 30-90 min | 2-4 h | 2-6 h |
Participantsdifferent | 2-6 | 2-8 | 2-6 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | 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 | ChangeRoot causeTroubleshootingComparison | ConstraintsDecisionPlanningOptions | Root causeSafetyIncident | Systems thinkingRoot causeConstraintsCausality |