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Selected:ARID (Active Reviews for Intermediate Designs)Stock and Flow DiagramRiskiest Assumption Test
| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  Systems Thinking Stock and Flow Diagram |  Product Discovery Riskiest Assumption Test |
|---|---|---|---|
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. | A Stock and Flow Diagram shows how stocks, inflows, and outflows shape a system over time. It is especially suited when growth, delays, or capacity limits determine the dynamics. | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 2-6 h | 1-2 Wochen pro Iteration |
Participantsdifferent | Designers, developers as users, and facilitation | 1-6 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Stock and Flow Model, Dynamics Notes, Simulation Hypotheses | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | DynamicsSimulationFeedbackSystems thinking | ExperimentsValidationDiscoveryAssumptions |
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