Normalization of deviance. Little by little bad habits are formed and not stamped out because nothing bad happen. Until a space shuttle explodes. Then years of

Normalization of deviance. Little by little bad habits are formed and not stamped out because nothing bad happen. Until a space shuttle explodes. Then years of wrong process are found. That's why you have to empower new hires to question your methods: someone from outside will see what is not normal, if you dismiss them you may be missing opportunities to right things before you crash.