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Selected:Root Cause Tree AnalysisARID (Active Reviews for Intermediate Designs)MORT AnalysisRoot Cause Analysis
| Criterion |  Operations Root Cause Tree Analysis |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations MORT Analysis |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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. | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | 1-3 h | 2–4 h review as a planning range; preparation and evaluation additional | Mehrere Tage bis Wochen | 1-4 h |
Participantsdifferent | 2-8 | Designers, developers as users, and facilitation | 2-6 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | Root causeTreeIncidentQuality | ArchitectureEngineeringFeedbackValidationTasks | Root causeSafetySystemicIncident | Root causeProblem solvingQualityIncident |