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Selected:Event Modeling Problem Interview ARID (Active Reviews for Intermediate Designs)Fake Door Test

Criterion	Knowledge Modeling Event Modeling	Product Discovery Problem Interview	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Fake Door Test
Purposedifferent	Event Modeling connects business workflows with commands, events, and views into one coherent mental model. It helps design behavior, UI, and technical slices from the same underlying logic.	When the picture of the problem still needs to become solid, it asks about real situations and consequences. It separates genuine suffering from mere interest in a solution.	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 demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small.
Complexitysame	Medium	Medium	Medium	Medium
Timedifferent	2-6 h	30-60 min je Interview	2–4 h review as a planning range; preparation and evaluation additional	1-5 Tage
Participantsdifferent	2-8	5-12 Interviews	Designers, developers as users, and facilitation	Nutzertraffic
Formatdifferent	Workshop + async	Workshop + async	Workshop + async	Async
Outputdifferent	Event Model, UI Flow, Commands, Read Models	Problem Evidence, Risk Notes, Customer Segments	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Click Data, Interest Signal, Learning Decision
Tagsno overlap	EventsBlueprintDomain-Driven DesignBehavior	DiscoveryInterviewsValidation	ArchitectureEngineeringFeedbackValidationTasks	ValidationExperimentsDemandDiscovery

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