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| Criterion |  Operations Fault Tree Analysis |  Innovation Brainwriting |  DevOps ChatOps |  Operations Causal Factor Analysis |
|---|---|---|---|---|
Purposedifferent | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | When loud voices or hierarchy distort the idea search, the method creates a quiet entry into joint development. It gives everyone thinking space and gathers contributions without social brakes, making diversity more visible and easier to build on. | For operational work in a distributed team, the method links communication with direct system control. It records decisions right where the signal, the context, and the execution come together. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. |
Complexitydifferent | High | Low | Medium | High |
Timedifferent | 2-6 h | 15-30 min | Ongoing | 2-6 h |
Participantsdifferent | 3-8 | 3-12 | 2-20 | 3-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Idea sheets, Expanded concepts, Prioritized list | Chat Transcript, Action Log, Automations | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | RiskRoot causeSafety | BrainstormingCollaborationInclusionIdeas | CollaborationEngineeringIncident | CausalityIncidentRoot causeTimeline |