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Selected:Time Blocking ARID (Active Reviews for Intermediate Designs)Assumption Surfacing Assumption Mapping

Criterion	Operations Time Blocking	Architecture ARID (Active Reviews for Intermediate Designs)	Decision Making Assumption Surfacing	Product Discovery Assumption Mapping
Purposedifferent	With a calendar that grows on request, the method makes available time explicit again. It combines appointments, focus work, and buffer into a more realistic day structure.	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.	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.	When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first.
Complexitydifferent	Low	Medium	Low	Medium
Timedifferent	15-30 min Planung, laufend	2–4 h review as a planning range; preparation and evaluation additional	45-90 min	45-60 min
Participantsdifferent	1	Designers, developers as users, and facilitation	2-8	2-8
Formatdifferent	Async	Workshop + async	Workshop + async	Workshop + async
Outputdifferent	Blocked Calendar, Capacity View, Focus Plan	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Assumption List, Critical Assumptions, Learning Plan	Assumption map, Test backlog, Risk ranking
Tagsno overlap	PlanningTime managementFocus	ArchitectureEngineeringFeedbackValidationTasks	AssumptionsRiskDecisionDiscovery	AssumptionsRiskExperimentsValidation

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