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Selected:ARID (Active Reviews for Intermediate Designs)Red TeamingExperiment CanvasAssumption Surfacing
| Criterion | ![]() Architecture ARID (Active Reviews for Intermediate Designs) | ![]() Decision Making Red Teaming | ![]() Product Discovery Experiment Canvas | ![]() Decision Making Assumption Surfacing |
|---|---|---|---|---|
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. | For strategic decisions with high reach, agreement and gut feeling are often not enough. Red teaming brings deliberate opposition into the situation and tests where a plan breaks under real counterarguments. | When experiments become unreadable after the fact, it arranges hypothesis, signal, and learning goal on a single canvas. It separates problem, assumption, solution, and evidence. The result is captured as a Completed Experiment Canvas and a Success Metric. | 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. |
Complexitydifferent | Medium | High | Low | Low |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 1-4 h | 30-60 min | 45-90 min |
Participantsdifferent | Designers, developers as users, and facilitation | 3-8 | 1-5 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Challenge Findings, Risk Register, Mitigation Plan | Completed Experiment Canvas, Success Metric | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | RiskDecisionSensemaking | ExperimentsValidationDiscoveryHypothesis | AssumptionsRiskDecisionDiscovery |



