Abstract

Kenny’s book on Wittgenstein has been studied by hundreds of students. What happens when a student comes to the lecturer and says that Kenny’s formula for the number of truth-functions is wrong? You read the 2006 revised edition of the book and realise that the student is right and are ashamed at not having pointed this out to the class. Then you try to focus on which misunderstandings may lie behind the wrong formula. This is what we are trying to do in these short remarks.