IN 1966, IN A US PSYCHIATRIC HOSPITAL, A DOCTOR NAMED CHARLES HOFLING SET OUT
TO INVESTIGATE THE POWER OF AUTHORITY.
He invented a fake medicine and placed bottles of the imagined drug in the hospital pharmacy. Every bottle clearly stated: Maximum dose 10mg.
Then, he asked a group of nurses a theoretical question: "If a doctor called you on the phone (against hospital policy) and instructed you to give your patient 20mg of this medicine, would you?"
94% said no, of course, they'd follow the rules.