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| Criterion |  Facilitation Timeline |  Facilitation Fishbowl Discussion |  Product Discovery Fake Door Test |  Product Discovery Riskiest Assumption 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 a controversial topic needs depth and discipline at the same time, Fishbowl Discussion makes the structure of the conversation transparent. The format keeps the core small enough for real dialogue and open enough for controlled turnover. | 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. | 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. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 30-90 min | 45-90 min | 1-5 Tage | 1-2 Wochen pro Iteration |
Participantsdifferent | 2-12 | 8-80 | Nutzertraffic | 2-6 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Timeline, Milestones, Insight Notes | Discussion Insights, Observed Tensions, Follow-up Questions | Click Data, Interest Signal, Learning Decision | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | TimelineFacilitationSequence | FacilitationDialogueLarge group | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryAssumptions |