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| Criterion |  Knowledge Modeling PARA Method |  Product Strategy Counter Metrics |  Product Discovery Fake Door Test |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | The PARA Method organizes knowledge into Projects, Areas, Resources, and Archives. It creates order when digital notes, files, and tasks no longer cleanly fit current work. | When a headline metric could mask side effects, it adds guardrail signals against unwanted outcomes. It connects customer value, product logic, and decision priorities. The result is captured as a counter-metric list and guardrail definitions. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 1-3 h Setup, laufend | 30-60 min | 1-5 Tage | 25-40 min |
Participantsdifferent | 1 | 2-6 | Nutzertraffic | 1-5 |
Formatdifferent | Async | Workshop + async | Async | Workshop + async |
Outputdifferent | PARA Structure, Project Notes, Knowledge Archive | Counter Metric List, Guardrail Definitions | Click Data, Interest Signal, Learning Decision | Learning Card with evidence and next action |
Tagsno overlap | KnowledgeProductivityOrganization | MetricsMeasurementStrategyExperiments | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryLearning |