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Selected:Fault Isolation ARID (Active Reviews for Intermediate Designs)Assumption Mapping Risk Storming

Criterion	Engineering Fault Isolation	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Assumption Mapping	Architecture Risk Storming
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.	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.	When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.	Helps clarify architecture context, options, and consequences in concrete terms. It organizes technical context, alternatives, and consequences. The result is captured as an Annotated Diagram, a Prioritized Risk List, and an Action Backlog.
Complexitydifferent	Medium	Medium	Medium	Low
Timedifferent	30-180 min	2–4 h review as a planning range; preparation and evaluation additional	45-60 min	60-90 min
Participantsdifferent	1-6	Designers, developers as users, and facilitation	2-8	4-12
Formatdifferent	Workshop + async	Workshop + async	Workshop + async	Workshop
Outputdifferent	Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Assumption map, Test backlog, Risk ranking	Annotated Diagram, Prioritized Risk List, Action Backlog
Tagsno overlap	TroubleshootingDiagnosisEngineering	ArchitectureEngineeringFeedbackValidationTasks	AssumptionsRiskExperimentsValidation	RiskArchitectureWorkshopValidation

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