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| Criterion |  Decision Making Assumption Surfacing |  Architecture C4 Model |  Product Discovery Experiment Canvas |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | 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. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 45-90 min | 1-4 h | 30-60 min | 20-35 min |
Participantsdifferent | 2-8 | 1-5 | 1-5 | 1-5 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | Context Diagram, Container Diagram, Component Diagram | Completed Experiment Canvas, Success Metric | Test Card with a pre-set threshold |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | ArchitectureCommunicationVisualization | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryHypothesis |