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Selected:Fault Isolation Architecture Decision Record Assumption Mapping ARID (Active Reviews for Intermediate Designs)

Criterion	Engineering Fault Isolation	Architecture Architecture Decision Record	Product Discovery Assumption Mapping	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.	An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable.	When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.	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.
Complexitydifferent	Medium	Low	Medium	Medium
Timedifferent	30-180 min	15-45 min	45-60 min	2–4 h review as a planning range; preparation and evaluation additional
Participantsdifferent	1-6	1-3	2-8	Designers, developers as users, and facilitation
Formatdifferent	Workshop + async	Async	Workshop + async	Workshop + async
Outputdifferent	Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area	ADR File, Decision Log, Rationale	Assumption map, Test backlog, Risk ranking	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions
Tagsno overlap	TroubleshootingDiagnosisEngineering	ArchitectureRationaleDocumentationGovernance	AssumptionsRiskExperimentsValidation	ArchitectureEngineeringFeedbackValidationTasks

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