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| Criterion |  UX Research Diary Study |  Product Strategy Lean Canvas |  Business Strategy 5-Minuten VC-Check |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | When experiences build up over days or weeks and a single session cannot capture them, Diary Study records the course of everyday life. Recurring triggers, moods, and habits become visible this way, beyond the sharpness of memory. | 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. | 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. | 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 | Medium | Low | Low |
Timedifferent | 1-4 Wochen | 45-90 min | 5-15 min | 15-30 min |
Participantsdifferent | 5-20 | 1-6 | 1-5 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Diary Entries, Longitudinal Patterns, Experience Timeline | Lean Canvas, Core Assumptions, Experiment Backlog | VC-check note, Go/sharpen/park decision, Risk and assumption list, Next validation step | Root cause notes, Countermeasures |
Tagsno overlap | UX researchTrackingBehavior | StartupLeanAssumptionsBusiness model | StartupValidationCompetition | Root causeIncidentLeanProblem solving |