Because people are so clever. Administrators who try to use cleverness, shortchange their community. Those who operate without cleverness are a blessing to their patrons. These are the two alternatives. Understanding these is true Professionalism.
Professionalism is deep and wide.
It leads all things back to the great Library. Because it lies below them. Therefore, it is the ruler of a thousand rivers. If the sage Librarian would guide the people, she must serve them with humility. If she would lead them, she must follow behind.