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Selected:ARID (Active Reviews for Intermediate Designs)Fault Tree Analysis Assumption Mapping Assumption Surfacing

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Operations Fault Tree Analysis	Product Discovery Assumption Mapping	Decision Making Assumption Surfacing
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 critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage.	When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.	Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it.
Complexitydifferent	Medium	High	Medium	Low
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	2-6 h	45-60 min	45-90 min
Participantsdifferent	Designers, developers as users, and facilitation	3-8	2-8	2-8
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	Fault Tree, Critical Paths, Cause Hypotheses, Control Actions	Assumption map, Test backlog, Risk ranking	Assumption List, Critical Assumptions, Learning Plan
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	RiskRoot causeSafety	AssumptionsRiskExperimentsValidation	AssumptionsRiskDecisionDiscovery

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