The drill instructor must have total and complete control. Mindless obedience is what he's after.
“If you want to study one of these strange organisms, you had better have a good justification. It's not good to study gene organisation in some obscure insect that no one's ever heard about.”
“Atlas was permitted the opinion that he was at liberty, if he wished, to drop the Earth and creep away; but this opinion was all that he was permitted.”