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Selected:ARID (Active Reviews for Intermediate Designs)Kepner-Tregoe Barrier Analysis Root Cause Analysis

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations Kepner-Tregoe	Operations Barrier Analysis	Operations Root Cause 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 disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations.	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.	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	High	Medium	Medium
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	2-8 h	2-4 h	1-4 h
Participantsdifferent	Designers, developers as users, and facilitation	2-8	2-6	3-8
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	Problem Analysis, Decision Analysis, Risk Plan	Barrier Inventory, Failure Analysis per Barrier, Action Backlog	Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	Problem solvingRoot causeDecisionOperations	Root causeSafetyIncident	Root causeProblem solvingQualityIncident

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