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Selected:Game Day ARID (Active Reviews for Intermediate Designs)Assumption Mapping Assumption Surfacing

Criterion	DevOps Game Day	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Assumption Mapping	Decision Making Assumption Surfacing
Purposedifferent	In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic.	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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.	Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it.
Complexitydifferent	High	Medium	Medium	Low
Timedifferent	Halber Tag	2–4 h review as a planning range; preparation and evaluation additional	45-60 min	45-90 min
Participantsdifferent	5-20	Designers, developers as users, and facilitation	2-8	2-8
Formatdifferent	Workshop	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	Simulation Notes, Gaps List, Updated Runbooks	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Assumption map, Test backlog, Risk ranking	Assumption List, Critical Assumptions, Learning Plan
Tagsno overlap	ResilienceOperationsIncident	ArchitectureEngineeringFeedbackValidationTasks	AssumptionsRiskExperimentsValidation	AssumptionsRiskDecisionDiscovery

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