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| Criterion |  Innovation Lean Startup |  UX Research User Interviews |  UX Research Affinity Diagramming |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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 teams derive needs only from assumptions and real motives are missing, user interviews give direct access to behavior and meaning. Conversations from the target group's everyday life make patterns, tensions, and open questions solidly visible. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | Wochen bis Monate je Lernzyklus | 30–60 min per interview | 45–90 min | 15-30 min |
Participantsdifferent | 2-8 | 1 participant per interview | 3-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Interview Notes, Themes, Insight Summary | Theme clusters, Insight statements, Opportunity areas | Root cause notes, Countermeasures |
Tagsno overlap | LeanStartupValidationMVP | QualitativeResearchCustomerDiscovery | SynthesisQualitativeRoot cause | Root causeIncidentLeanProblem solving |