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Selected:ARID (Active Reviews for Intermediate Designs)A/B Testing Assumption Mapping Assumption Surfacing

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Growth A/B Testing	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.	When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects.	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	1-4 Wochen	45-60 min	45-90 min
Participantsdifferent	Designers, developers as users, and facilitation	1-6	2-8	2-8
Formatdifferent	Workshop + async	Async	Workshop + async	Workshop + async
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Experiment results, Decision log, Learning summary	Assumption map, Test backlog, Risk ranking	Assumption List, Critical Assumptions, Learning Plan
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	ExperimentsGrowthAnalyticsValidation	AssumptionsRiskExperimentsValidation	AssumptionsRiskDecisionDiscovery

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