 In the Introduction of the Catalogue (Ebbesen and Goubier 2010, vol. I), we find an elaborate description of the medieval genre of sophismata. This genre was based on disputational practices in medieval universities. In its most basic form, it included the discussion of a problematic proposition, beginning with the presentation of the proposition, followed by a proof, a disproof, and a solution, sometimes accompanied by a response to the opposing arguments (see our section 2.2). The joint discsussion of these steps was known as corpus sophismatis. A respondent’s solution to the sophisma could be followed by an attack, leading to yet another exchange of arguments. In other instances the discussion of the sophisma could continue with a discussion of related problems, the first of which was often dealt with in an elaborate way. These kinds of sophismata are quite long.