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| Criterion |  Operations A3 Problem Solving |  Systems Thinking Behavior Over Time Graph |  Operations Kepner-Tregoe |  Systems Thinking Iceberg Model |
|---|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | A Behavior Over Time Graph shows how a metric or observation develops over time. The method makes trends, breaks, and recurring patterns visible that get lost in snapshots. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | The Iceberg Model separates visible events from patterns, structures, and mental models. This turns a single observation into a deeper understanding of why a problem keeps recurring. |
Complexitydifferent | Medium | Low | High | Low |
Timedifferent | 45-90 min | 20-45 min | 2-8 h | 30-60 min |
Participantsdifferent | 2-5 | 1-10 | 2-8 | 2-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Behavior Over Time Graph, Trend Hypotheses, Key Events | Problem Analysis, Decision Analysis, Risk Plan | Iceberg Worksheet, Pattern Notes, Intervention Ideas |
Tagsno overlap | LeanProblem solvingCoachingOperations | Systems thinkingPatternsDynamics | Problem solvingRoot causeDecisionOperations | Systems thinkingRoot causePatterns |