If you say no to your boss, or your spouse, or your mother, when it needs to be said, then you transform yourself into someone who can say no when it needs to be said. If you say yes when no needs to be said, however, you transform yourself into someone who can only say yes, even when it is very clearly time to say no. If you ever wonder how perfectly ordinary, decent people could find themselves doing the terrible things the gulag camp guards did, you now have your answer. By the time no seriously needed to be said, there was no one left capable of saying it.