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Selected:Cost of DelayARID (Active Reviews for Intermediate Designs)Assumption SurfacingRiskiest Assumption Test
| Criterion |  Delivery Cost of Delay |  Architecture ARID (Active Reviews for Intermediate Designs) |  Decision Making Assumption Surfacing |  Product Discovery Riskiest Assumption Test |
|---|---|---|---|---|
Purposedifferent | Helps clarify scope, order, and delivery flow in concrete terms. It makes work, constraints, and sequence manageable. The result is captured as a Cost of Delay table and prioritization sequence. | 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 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 | High | Medium | Low | Medium |
Timedifferent | 90-180 min | 2–4 h review as a planning range; preparation and evaluation additional | 45-90 min | 1-2 Wochen pro Iteration |
Participantsdifferent | 3-8 | Designers, developers as users, and facilitation | 2-8 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | CoD Table, Prioritization Sequence | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Assumption List, Critical Assumptions, Learning Plan | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | PrioritizationDeliveryEconomicsDecision | ArchitectureEngineeringFeedbackValidationTasks | AssumptionsRiskDecisionDiscovery | ExperimentsValidationDiscoveryAssumptions |