Normalisation of Deviance’ is a term which has become more popular in diving environments with articles being written by well known individuals such as Steve Lewis and Andy Davis explaining the context in terms of diving accidents in the US and Dr Guy Garman’s fatal attempt for a world record OC dive respectively.
The video clip below is a modification of a presentation I have previously given and combined two concepts looking at drift. The first concept is about systemic migration to the boundaries, a concept from Amalberti’s 2001 paper on “The paradoxes of almost totally safe transportation systems”. In it he showed that internal and external pressures drive operator behaviour towards potentially unsafe or adverse events. The diagram below shows this in more detail. It also identifies that more rules are unlikely to change behaviours.
In another paper by Amalberti, this time on violations and migrations in healthcare, he and his authors wrote:
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