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| Criterion |  Agile 4Ls Retrospective |  Product Discovery Assumption Mapping |  Innovation Lean Startup |  Product Discovery Riskiest Assumption Test |
|---|---|---|---|---|
Purposedifferent | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | 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 | 45–75 min | 45-60 min | Wochen bis Monate je Lernzyklus | 1-2 Wochen pro Iteration |
Participantsdifferent | Team members involved | 2-8 | 2-8 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | 4Ls Board, Learning Themes, Improvement Actions | Assumption map, Test backlog, Risk ranking | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Prioritized Assumption List, Test Plan, Results Report |
Tagsno overlap | RetrospectiveLearningReflectionTeam | AssumptionsRiskExperimentsValidation | LeanStartupValidationMVP | ExperimentsValidationDiscoveryAssumptions |