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

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Fake Door Test	Product Discovery Riskiest Assumption Test	Product Discovery Learning Card
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 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.	When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report.	The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible.
Complexitydifferent	Medium	Medium	Medium	Low
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	1-5 Tage	1-2 Wochen pro Iteration	25-40 min
Participantsdifferent	Designers, developers as users, and facilitation	Nutzertraffic	2-6	1-5
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	Click Data, Interest Signal, Learning Decision	Prioritized Assumption List, Test Plan, Results Report	Learning Card with evidence and next action
Tags1 shared	ArchitectureEngineeringFeedbackValidationTasks	ValidationExperimentsDemandDiscovery	ExperimentsValidationDiscoveryAssumptions	ExperimentsValidationDiscoveryLearning

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