Why was it necessary for Wainwright to emphasize both of these sets of initiatives? How are they related?

An Entirely New Philosophy of Business Base on Customer Satisfaction and Quality- Discussion Question 1. In its pursuit of improved quality, Wainwright emphasized two sets of initiatives: one based on improvements in its manufacturing operations (e.g., just-in-time manufacturing, computer-aided design) and the other based on human resource management (e.g. employee empowerment, profit sharing). Why was it necessary for Wainwright to emphasize both of these sets of initiatives? How are they related?