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Selected:ARID (Active Reviews for Intermediate Designs)Blameless Postmortem Experiment Canvas Learning Card

Criterion	Architecture ARID (Active Reviews for Intermediate Designs)	DevOps Blameless Postmortem	Product Discovery Experiment Canvas	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.	After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures.	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	2–4 h review as a planning range; preparation and evaluation additional	30-90 min	30-60 min	25-40 min
Participantsdifferent	Designers, developers as users, and facilitation	3-12	1-5	1-5
Formatsame	Workshop + async	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Postmortem Doc, Action Items, Timeline	Completed Experiment Canvas, Success Metric	Learning Card with evidence and next action
Tagsno overlap	ArchitectureEngineeringFeedbackValidationTasks	Site Reliability EngineeringIncidentLearningReliability	ExperimentsValidationDiscoveryHypothesis	ExperimentsValidationDiscoveryLearning

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