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Selected:ARID (Active Reviews for Intermediate Designs)Learning Card Assumption Surfacing Fake Door Test

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Learning Card	Decision Making Assumption Surfacing	Product Discovery Fake Door Test
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.	The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible.	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.	When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small.
Complexitydifferent	Medium	Low	Low	Medium
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	25-40 min	45-90 min	1-5 Tage
Participantsdifferent	Designers, developers as users, and facilitation	1-5	2-8	Nutzertraffic
Formatdifferent	Workshop + async	Workshop + async	Workshop + async	Async
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Learning Card with evidence and next action	Assumption List, Critical Assumptions, Learning Plan	Click Data, Interest Signal, Learning Decision
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	ExperimentsValidationDiscoveryLearning	AssumptionsRiskDecisionDiscovery	ValidationExperimentsDemandDiscovery

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