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| Criterion |  Product Strategy Lean Canvas |  Operations 5 Whys |  Operations Ivy Lee Method |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 45-90 min | 15-30 min | 5-10 min daily | 1-4 h |
Participantsdifferent | 1-6 | 2-6 | 1 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | Root cause notes, Countermeasures | Daily Priority List, Completion Notes | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | StartupLeanAssumptionsBusiness model | Root causeIncidentLeanProblem solving | PrioritizationProductivityExecution | Root causeProblem solvingQualityIncident |