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Selected:ARID (Active Reviews for Intermediate Designs)Experiment Canvas MVP Test Matrix Learning Card

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Experiment Canvas	Product Discovery MVP Test Matrix	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 experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric.	When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan.	The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible.
Complexitydifferent	Medium	Low	Medium	Low
Timedifferent	2–4 h review as a planning range; preparation and evaluation additional	30-60 min	45-75 min	25-40 min
Participantsdifferent	Designers, developers as users, and facilitation	1-5	2-8	1-5
Formatdifferent	Workshop + async	Workshop + async	Workshop	Workshop + async
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Completed Experiment Canvas, Success Metric	Test Matrix, Test Plan	Learning Card with evidence and next action
Tags1 shared	ArchitectureEngineeringFeedbackValidationTasks	ExperimentsValidationDiscoveryHypothesis	ExperimentsValidationDiscoveryOptions	ExperimentsValidationDiscoveryLearning

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