Everyone knows IBM’s Thomas J. Watson said it, in 1943 or 1958, depending on who is telling you. The earliest appearance anyone can find is a 1981 trivia book, Facts and Fallacies, which credits “Thomas J. Watson of IBM” without saying which Watson or when; a 1983 compilation supplied the 1958 date. Watson’s own biographer went through the speeches, letters and meeting notes and found nothing.