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| Criterion |  Engineering Fault Isolation |  Engineering Failure Scenario Analysis |  Architecture ARID (Active Reviews for Intermediate Designs) |
|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 30-180 min | 1-3 h | 2–4 h review as a planning range; preparation and evaluation additional |
Participantsdifferent | 1-6 | 3-8 | Designers, developers as users, and facilitation |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions |
Tagsno overlap | TroubleshootingDiagnosisEngineering | FailureResilienceRisk | ArchitectureEngineeringFeedbackValidationTasks |
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