There was a hunger for goods and services both here and abroad. The basic business philosophy during this period was to get as much out the door as quickly as possible, with little attention being paid to the cost of producing those goods and even less to their quality. The union-management systems in place between 1945 and 1975 were largely adversarial. The purpose of collective bargaining at that time centered on how to distribute the existing wealth, i.e., who got what share, rather than on creating wealth. Taylor in effect was saying that thinkers never do and doers never think.
Some people still fail to recognize that many people are capable of doing both - thinking and doing.
After this, systems of command and control are determined to make sure that workers do what they are supposed to do. In the 1970s, the external environment began to change. Other countries had begun to recover from WWII, and global competition had become a fact in most industries. New technology also was driving change. Computers and new software were changing the way work was done - telescoping both the work process ad the time required to get the work done.