6 ◾ Lean Production Simplified, Third Edition
objectively, “by the numbers.” Generally accepted accounting practice
(GAAP) was developed to support this system.
Sloan’s innovations greatly advanced management science. But again,
there were unpleasant side effects:
◾ The gap between management and the shop floor was widened.
◾ Accounting practice came to encourage wasteful manufacturing prac-
tices such as building to inventory rather than customer demand.
Mass production also proved a fertile environment for a successful union
movement. The division of labor resulted in meaningless, mind-numbing
work. Workers, like machines, were considered to be interchangeable.
Moreover, workers were considered a variable cost and could be jettisoned
with an ...