William Haddon (in the picture)  was the first director of the National Traffic Safety Highway Administration (NHTSA) and of the Insurance Institute of Highway Safety (IIHS) in the United States. He is credited with a paradigm change in the prevention of road traffic deaths and injuries moving from an “accidental” or “pre-scientific” approach to an etiologic one. This paradigm will result in the very well known (and frequently misunderstood) “Haddon Matrix”, which is intrinsically related to the Safe Systems approach.

A major piece of his contribution to the field was to express very clearly that “there is no logical reason why the rank order (or priority) of loss-reduction countermeasures (…) must parallel the sequence, or rank order, of causes contributing to the result of damaged people or property”.

Even if the above affirmation may seem shockingly, please read the paper Haddon 1970- On the escape of tigers , published in the American Journal of Public Health in 1970 and continue thinking about the problem.

[Disclosure: the paper is available through several public repositories]