|A Safety Policy is based on data only.|
When operational changes go undetected they becomes “normal” to operations. A policy may at first sight appear to be applicable indefinite, since at the time of implementation its intentions were to promote safety and if the policy is questioned, or reviewed it could appear to be an attack on safety itself. Over the history of aviation, it has been unheard of to question safety. However, by allowing for a safety review of the policy, or in other words question safety, new doors are opened for continuous improvement to aviation safety.
Almost safe doesn’t cut it.