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| Criterion |  Innovation How Might We |  Product Strategy Lean Canvas |  Product Discovery Pretotyping |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | With a stuck problem carrying many implicit assumptions, the method translates observations into open, workable questions. It sharpens the problem frame without pre-thinking the solution, turning frustration or fuzziness into a search space with clear direction. | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | Pretotyping clarifies whether a customer problem and solution idea create enough real demand. It separates problem, assumption, solution, and evidence, and captures the result as a pretotyping sketch, test setup, and conversion data. | 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 | 30–45 min | 45-90 min | Stunden bis wenige Tage | 1-5 Tage |
Participantsdifferent | 1-10 | 1-6 | 1-4 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | HMW Questions, Challenge Framing, Idea Prompts | Lean Canvas, Core Assumptions, Experiment Backlog | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | FramingOpportunityIdeationQuestions | StartupLeanAssumptionsBusiness model | ValidationDemandMVP | ValidationExperimentsDemandDiscovery |