 The theory of transcasus has nothing to do with the fallacy secundum quid et simpliciter, although it too seems to have had its origins in antiquity. The word transcasus is not a common Latin word. It seems to be a literal translation of Greek metaptosis. In Stoic logic, propositions that change their truth value over time were called metapiptonta (from the same root). Walter Burley in fact used the word transcasus exactly this way in 1302 in two short logical works (Spade 1987: 33–34).