As one who was married to "it", there was nothing, nothing whatsoever, that the doctor didn't know better about, including how to cook, how to sew, how to load the dishwasher, how to do what I did for a living, how to nurse an infant, you name it. He was a superior class of human— just ask him, or if he's unavailable (he usually was), ask his mother. I sure can pick 'em.
YIKES! Have only had the experience of encountering that version of KnowItAllAndIWillTellYouMD while in my practice and would walk away thankful that I was not relying on them for anything...