ABSTRACT
Human error is a concept so well-known worldwide that it is often cited but not actually defined. It should be noted that this term is understood as an action that is not intended; not desired by a set of rules or an external observer; or that led the task or system outside its acceptable limits (Senders & Moray 1991). Human error is not connected with the accident, and thus the result, because it is independent (the same error in other circumstances may lead to different results) and can be simultaneously the result of other circumstances causing the error. However, very often it is considered from the point of view of an accident, due to the fact that it is only after the accident that an analysis is performed which reveals the existence of a specific human error. Another limitation of the category of human error is to specify that human error is understood as only such action, which was not purposely intended by the human (and therefore an action done in good faith, not a deliberate violation of the established rules) (Reason 1990).
