IIRC was basically 'I don't want my doctor to be knowing nothing about my condition!' followed up with 'I don't want my doctor saying anything in the least bit figurative.'
Yes, i vastly prefer my doctors to be filled with the notion that they know all there is to know about my condition than to admit something like "Despite my demostrated expertise and obvious knowledge of the subject, I have learned there is much yet to learn. However, Treatment X followed by Treatment Y is the best we have to offer today and has demonstrated effectiveness in these ways..."