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| Criterion |  Facilitation Timeline |  Product Discovery Riskiest Assumption Test |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | When a project, incident, or change process is only remembered in fragments, Timeline brings the sequence back into a readable form. It makes turning points, precursors, and after-effects recognizable over the course of time. | 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. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | 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 | Medium | Low | Medium |
Timedifferent | 30-90 min | 1-2 Wochen pro Iteration | 25-40 min | 1-5 Tage |
Participantsdifferent | 2-12 | 2-6 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Timeline, Milestones, Insight Notes | Prioritized Assumption List, Test Plan, Results Report | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | TimelineFacilitationSequence | ExperimentsValidationDiscoveryAssumptions | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |