Listen again to part of the lecture, then answer the question. Why should we have a single engineering department that has all four cars passing through it? When you design a car, you need the expertise of all the engineers in the company. Each engineer needs to be in touch with the entire engineering department. Yeah, but I keep...I keep asking why? I wanna know why. Why does the professor say this: Yeah, but I keep...I keep asking why? I wanna know why.