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Selected:Fault Isolation ARID (Active Reviews for Intermediate Designs)Experiment Canvas Learning Card

Criterion	Engineering Fault Isolation	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Experiment Canvas	Product Discovery Learning Card
Purposedifferent	In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected.	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 Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible.
Complexitydifferent	Medium	Medium	Low	Low
Timedifferent	30-180 min	2–4 h review as a planning range; preparation and evaluation additional	30-60 min	25-40 min
Participantsdifferent	1-6	Designers, developers as users, and facilitation	1-5	1-5
Formatsame	Workshop + async	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Completed Experiment Canvas, Success Metric	Learning Card with evidence and next action
Tagsno overlap	TroubleshootingDiagnosisEngineering	ArchitectureEngineeringFeedbackValidationTasks	ExperimentsValidationDiscoveryHypothesis	ExperimentsValidationDiscoveryLearning

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