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| Criterion |  UX Research Affinity Diagramming |  Operations Fault Tree Analysis |  Operations Fishbone Diagram |
|---|---|---|---|
Purposedifferent | 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. | 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 a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Low | High | Low |
Timedifferent | 45–90 min | 2-6 h | 30-60 min |
Participantsdifferent | 3-10 | 3-8 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Theme clusters, Insight statements, Opportunity areas | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tags1 shared | SynthesisQualitativeRoot cause | RiskRoot causeSafety | Root causeQualityOperations |
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