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| Criterion |  Operations Fault Tree Analysis |  UX Research User Interviews |
|---|---|---|
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 teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. |
Complexitydifferent | High | Low |
Timedifferent | 2-6 h | 30–60 min per interview |
Participantsdifferent | 3-8 | 1 participant per interview |
Formatsame | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Interview Notes, Themes, Insight Summary |
Tagsno overlap | RiskRoot causeSafety | QualitativeResearchCustomerDiscovery |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
