David's Time With Peter F. Drucker 2020.2.16
The discipline's basic assumptions about reality determine what it focuses on. They determine what a discipline considers “facts,” and indeed what it considers the discipline itself to be all about. The assumptions also largely determine what is being disregarded in a discipline or is being pushed aside as an “annoying exception.” They decide both what in a given discipline is being paid attention to and what is neglected or ignored.
——《Management Challenges for the 21st Century·Chapter1》(Peter F.Drucker,1999)