 Accepting simultaneous alternatives and denying the necessity of the present are typical of modal semantics and modal logic after Campsall, especially in the work of figures such as William of Ockham and John Buridan. It is historically interesting that Campsall employs these principles in his work, even though they are embedded in a theory whose elements point in another direction, towards Kilwardby. Campsall’s problematization of the necessity of the present also indicates that he wants to separate logic from ontology. In many respects, he paves the way for the next generation of logicians. His complicated interpretation also shows that no matter how hard one might try, there is no way to give a consistent interpretation of what Aristotle says in the Prior Analytics (for discussion, see Lagerlund 2000, Thom 2003 and Knuuttila 2008).