ABSTRACT
The present theory implemented in Safety-I (especially in aviation) is the “Theory of incidents and accidents,” which applies “Sequences of Events” (SoE) methodology. It defines an accident as a chain of sequential events that had happened before the actual accident. So, if we put up some barriers against the incidents and stop the incidents from happening, then the sequence (“chain of events”) will not be established and the accident will not happen (will be prevented). This is a linear model and it is used in numerous methods to calculate risks.
