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| Criterion |  Decision Making Delphi Method |  Operations Barrier Analysis |  Systems Thinking Behavior Over Time Graph |  Systems Thinking Iceberg Model |
|---|---|---|---|---|
Purposedifferent | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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. | 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 | High | Medium | Low | Low |
Timedifferent | 1-4 Wochen | 2-4 h | 20-45 min | 30-60 min |
Participantsdifferent | 6-30 Experten | 2-6 | 1-10 | 2-10 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Behavior Over Time Graph, Trend Hypotheses, Key Events | Iceberg Worksheet, Pattern Notes, Intervention Ideas |
Tagsno overlap | ForecastingExpertsDecisionStrategy | Root causeSafetyIncident | Systems thinkingPatternsDynamics | Systems thinkingRoot causePatterns |