> McKinsey's oil division could work just fine if it had 0 pharma consultants Their oil division would be much smaller, or possibly insignificant without the o

> McKinsey's oil division could work just fine if it had 0 pharma consultants Their oil division would be much smaller, or possibly insignificant without the other divisions because the of the total "power" the company has by having its tendrils in every industry and government all over the world. If the COO of Ghana Oil needs a consultant, he will ask his friend the COO of Ghana Pharma, who is using McKinsey, and will get that recommendation. McKinsey is the whole sum of its parts. If some parts didn't exist, the whole would be much less effective, just like engineers and product managers at FB who don't directly work on the "problematic" parts make the whole more effective. Also, I was being sarcrastic to compare your statement about working at McKinsey to FB employees