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Selected:ARID (Active Reviews for Intermediate Designs)Root Cause Tree Analysis Fishbone Diagram Failure Mode and Effects Analysis

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations Root Cause Tree Analysis	Operations Fishbone Diagram	Operations Failure Mode and Effects 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 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.	When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers.	For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability.
Complexitydifferent	Medium	Medium	Low	High
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	1-3 h	30-60 min	2-6 h
Participantsdifferent	Designers, developers as users, and facilitation	2-8	2-8	3-10
Formatdifferent	Workshop + async	Workshop	Workshop	Workshop
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Cause Tree, Evidence Notes, Countermeasures	Fishbone Diagram, Cause Categories, Investigation Backlog	FMEA Table, Risk Priority, Mitigation Actions
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	Root causeTreeIncidentQuality	Root causeQualityOperations	RiskQualityOperationsRoot cause

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