Streamline Shoe Company, a Manufacturer of Women's Shoes, Recently Implemented

Streamline Shoe Company, a manufacturer of women's shoes, recently implemented a quality improvement program aimed at streamlining the manufacturing process. Carl Silverman, an industrial engineer and a resident expert on process improvement, was assigned the task of implementing the program.
Silverman's first task was to educate all the employees involved with the production process. He sent a memo to representatives in product design and development, materials management (including purchasing), marketing, distribution, customer service and accounting, in addition to those in the production department, inviting them to attend an information session on the improvement program.
He began the meeting by thanking all those who were present (over 35 in number) and spent the first hour explaining the need for such a program. Soon after, the attendees were engaged in a discussion. Several questions were raised during the discussion. Among these, three questions stood out. What is the need for including members from design, marketing, and other functional areas when the improvement program's focus is on streamlining the manufacturing process? What is the role of the cost management expert in this program? Finally, why should the machine operators be involved, as they are not engineers? Required:
Consider the three questions that stood out in the discussion. Assume the role of Carl Silverman and prepare a response addressing the questions.