View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  DevOps Blameless Postmortem |  Operations Barrier Analysis |  Systems Thinking Behavior Over Time Graph |  Systems Thinking Iceberg Model |
|---|---|---|---|---|
Purposedifferent | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | 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 | Medium | Medium | Low | Low |
Timedifferent | 30-90 min | 2-4 h | 20-45 min | 30-60 min |
Participantsdifferent | 3-12 | 2-6 | 1-10 | 2-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Behavior Over Time Graph, Trend Hypotheses, Key Events | Iceberg Worksheet, Pattern Notes, Intervention Ideas |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Root causeSafetyIncident | Systems thinkingPatternsDynamics | Systems thinkingRoot causePatterns |