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Selected:Learning CardAssumption SurfacingATAM (Architecture Tradeoff Analysis Method)Fake Door Test
| Criterion |  Product Discovery Learning Card |  Decision Making Assumption Surfacing |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | 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 | Low | Low | High | Medium |
Timedifferent | 25-40 min | 45-90 min | Several meetings plus preparation and analysis; total effort depends on scope | 1-5 Tage |
Participantsdifferent | 1-5 | 2-8 | Evaluation team, architects, and relevant stakeholders | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Learning Card with evidence and next action | Assumption List, Critical Assumptions, Learning Plan | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ExperimentsValidationDiscoveryLearning | AssumptionsRiskDecisionDiscovery | ArchitectureQualityRiskTradeoffsStakeholders | ValidationExperimentsDemandDiscovery |