Francis L. Wellman, The Art of Cross-Examination — Chapter 12 (1903)
“ Counsel. "Do you wish to go out to the world as saying that you have never diagnosed a case of morphine poisoning excepting when you had an autopsy to exclude kidney disease?" Witness. "I do not. I have not said so." Counsel. "Then you have diagnosed a case on the symptoms alone, yes? or no? I want a categorical answer." Witness (sparring) . "I would refuse to answer that question categorically; the word 'diagnosed' is used with two different meanings. One has to make what is known as a 'working diagnosis' when he is called to a case, not a positive diagnosis." ”
