" functional design, where it applies, makes the least psychological demands on the people. They are highly secure both in their work and in their relationships. When it, however, is being used beyond fairly narrow limits of size and complexity it creates emotional tensions, hostilities, and insecurities. People will then tend to see themselves and their functions belittled, besieged, attacked. They will come to see it as their first job to defend their function, to protect it against marauders in other functions, to make sure “it doesn’t get pushed around. "

― Peter F. Drucker , Management: Tasks, Responsibilities, Practices