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Selected:System Dynamics Simulation ARID (Active Reviews for Intermediate Designs)Test Card Fake Door Test

Criterion	Systems Thinking System Dynamics Simulation	Architecture ARID (Active Reviews for Intermediate Designs)	Product Discovery Test Card	Product Discovery Fake Door Test
Purposedifferent	System Dynamics Simulation makes assumptions about time, delay, and feedback testable through experiments. It draws relationships, patterns, and feedback loops. The result is captured as a simulation model and scenario reports.	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.	The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success.	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.
Complexitydifferent	High	Medium	Low	Medium
Timedifferent	Mehrere Tage bis Wochen	2–4 h review as a planning range; preparation and evaluation additional	20-35 min	1-5 Tage
Participantsdifferent	1-5 Modellierende, Stakeholder asynchron	Designers, developers as users, and facilitation	1-5	Nutzertraffic
Formatdifferent	Async	Workshop + async	Workshop + async	Async
Outputdifferent	Simulation Model, Scenario Reports	Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions	Test Card with a pre-set threshold	Click Data, Interest Signal, Learning Decision
Tagsno overlap	Systems thinkingDynamicsSimulationAnalysis	ArchitectureEngineeringFeedbackValidationTasks	ExperimentsValidationDiscoveryHypothesis	ValidationExperimentsDemandDiscovery

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