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| Criterion |  Operations Fishbone Diagram |  Systems Thinking Iceberg Model |  Systems Thinking Behavior Over Time Graph |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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. | 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 process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Low | Low | Low | High |
Timedifferent | 30-60 min | 30-60 min | 20-45 min | 2-6 h |
Participantsdifferent | 2-8 | 2-10 | 1-10 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Iceberg Worksheet, Pattern Notes, Intervention Ideas | Behavior Over Time Graph, Trend Hypotheses, Key Events | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | Root causeQualityOperations | Systems thinkingRoot causePatterns | Systems thinkingPatternsDynamics | RiskQualityOperationsRoot cause |