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| Criterion |  UX Research User Interviews |  Innovation Lean Startup |  Operations 5 Whys |  Business Strategy 5-Minuten VC-Check |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. | The 5-Minute VC Check clarifies opportunities and strategic options at the earliest idea stage. It compares problem quality, customer willingness to pay, alternatives, differentiation, and market potential, and captures the result as a VC-check note, go/sharpen/park decision, and risk list. |
Complexitydifferent | Low | Medium | Low | Low |
Timedifferent | 30–60 min per interview | Wochen bis Monate je Lernzyklus | 15-30 min | 5-15 min |
Participantsdifferent | 1 participant per interview | 2-8 | 2-6 | 1-5 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Interview Notes, Themes, Insight Summary | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Root cause notes, Countermeasures | VC-check note, Go/sharpen/park decision, Risk and assumption list, Next validation step |
Tagsno overlap | QualitativeResearchCustomerDiscovery | LeanStartupValidationMVP | Root causeIncidentLeanProblem solving | StartupValidationCompetition |