How do you condition someone to be loyal/obedient and not a liability? You haze them with the implication that a whole lot worse could happen, and then you test them. “You gotta promise not to tell anyone this, I’m trusting you” usually loosely translates to “I just told you something bogus and everyone is listening to see if you’re gonna spill the beans, and if so we’ll beat the everliving shit out of you until you learn”