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| Criterion |  Operations Fault Tree Analysis |  Agile Specification by Example |  Operations 5 Whys |
|---|---|---|---|
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 business rules need to become precise, it ties language, example, and test together. It sorts work by value, risk, and delivery ability. The result is captured as an Example Table and Acceptance Tests. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | High | Medium | Low |
Timedifferent | 2-6 h | 60-90 min pro Feature | 15-30 min |
Participantsdifferent | 3-8 | 3-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Example Table, Acceptance Tests | Root cause notes, Countermeasures |
Tagsno overlap | RiskRoot causeSafety | AgileRequirementsExamplesBehavior-Driven Development | Root causeIncidentLeanProblem solving |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
