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Selected:Constraint Analysis ARID (Active Reviews for Intermediate Designs)Experiment Canvas Test Card

Criterion	Decision Making Constraint Analysis	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Experiment Canvas	Product Discovery Test Card
Purposedifferent	When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped.	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.	The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success.
Complexitydifferent	Low	Medium	Low	Low
Timedifferent	30-90 min	2–4 h review as a planning range; preparation and evaluation additional	30-60 min	20-35 min
Participantsdifferent	2-8	Designers, developers as users, and facilitation	1-5	1-5
Formatsame	Workshop + async	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Completed Experiment Canvas, Success Metric	Test Card with a pre-set threshold
Tagsno overlap	ConstraintsDecisionPlanningOptions	ArchitectureEngineeringFeedbackValidationTasks	ExperimentsValidationDiscoveryHypothesis	ExperimentsValidationDiscoveryHypothesis

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