- An accident is a combination of the system being in a hazardous state and unfavourable environmental conditions that turn the hazard into an accident.
- A near miss is when the system was in the hazardous state but the environmental conditions were in our favour so the accident didn't happen.
We can't control environmental conditions, we can just make sure to keep the system out of the hazardous state. This means a near miss contains all we need to perform a proper post mortem. The environmental conditions are really immaterial.
- An accident is a combination of the system being in a hazardous state and unfavourable environmental conditions that turn the hazard into an accident.
- A near miss is when the system was in the hazardous state but the environmental conditions were in our favour so the accident didn't happen.
We can't control environmental conditions, we can just make sure to keep the system out of the hazardous state. This means a near miss contains all we need to perform a proper post mortem. The environmental conditions are really immaterial.