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| Criterion |  Operations Change Analysis |  Operations Root Cause Analysis |  Operations Ivy Lee Method |  Operations Eat the Frog |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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. | 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. | The method protects energy and attention for the task that creates the largest progress and is often postponed. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 45-120 min | 1-4 h | 5-10 min daily | 15-90 min daily |
Participantsdifferent | 2-6 | 3-8 | 1 | 1 |
Formatdifferent | Workshop + async | Workshop + async | Async | Async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Daily Priority List, Completion Notes | Priority Task, Completion Note, Daily Focus |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | Root causeProblem solvingQualityIncident | PrioritizationProductivityExecution | PrioritizationProductivityFocusExecution |