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Selected:ARID (Active Reviews for Intermediate Designs)MORT Analysis Family Tree Analysis Barrier Analysis

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations MORT Analysis	Operations Family Tree Analysis	Operations Barrier Analysis
Purposedifferent	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.	For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring.	For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions.
Complexitydifferent	Medium	High	Medium	Medium
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	Mehrere Tage bis Wochen	2-4 h	2-4 h
Participantsdifferent	Designers, developers as users, and facilitation	2-6	2-6	2-6
Formatsame	Workshop + async	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	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	Family Tree Diagram, Pattern Notes, Systemic Measures	Barrier Inventory, Failure Analysis per Barrier, Action Backlog
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	Root causeSafetySystemicIncident	Root causePatternsIncidentSystemic	Root causeSafetyIncident

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