Had lunch with a friend today, and he's thinking of going back to school for a PhD. It sounded like a completely insane idea, given that he already has an MBA and is an engineer by profession. He has no interest in academia, insisting that he just wants to get a doctorate for fun, and is planning to go back to work for a corporation once he's done. I tried to be polite, but I'm wondering if this guy sounds as insane to you as he does to me? Would this credential provide any benefit to him whatsoever?

