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| Criterion |  Operations Fault Tree Analysis |  UX Research Affinity Diagramming |  Systems Thinking Current Reality Tree |
|---|---|---|---|
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. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | 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 | High |
Timedifferent | 2-6 h | 45–90 min | 2-6 h |
Participantsdifferent | 3-8 | 3-10 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Theme clusters, Insight statements, Opportunity areas | Current Reality Tree, Core Problems, Intervention Ideas |
Tags1 shared | RiskRoot causeSafety | SynthesisQualitativeRoot cause | Systems thinkingRoot causeConstraintsCausality |
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