Hence the term 'normalization of deviance' [0] (where small problems occur repeatedly and people become habituated to them because nothing really bad ever happe

Hence the term 'normalization of deviance' [0] (where small problems occur repeatedly and people become habituated to them because nothing really bad ever happens). When the really bad thing happens, then you get the gruesome headlines. Examples the are O-ring burn-through events that preceded the Challenger disaster [1] (7 astronauts, dead), and the 'smoulders' that preceded the Kings Cross underground railway fire [2] (31 people. Dead.) [0] https://en.wikipedia.org/wiki/Diane_Vaughan https://en.wikipedia.org/wiki/Diane_Vaughan [1] https://en.wikipedia.org/wiki/Space_Shuttle_Challenger_disaster https://en.wikipedia.org/wiki/Space_Shuttle_Challenger_disas... [2] https://en.wikipedia.org/wiki/King%27s_Cross_fire https://en.wikipedia.org/wiki/King%27s_Cross_fire