A Conversation About Fuzzy Logic and Vagueness

CF: I am flattered by this reference to my own work. But we should let our intended audience know a bit a more about the background of those two contributions. I still remember that I imagined to be quite bold and provocative by submitting a paper to a workshop on Soft Computing—organized by you, by the way, in 2003—that suggested already in the title that logicians should not just presume that the are properly dealing with vagueness when they investigate fuzzy logics, but should pay attention to the extended discourse on so-called ‘theories of vagueness’ in philosophy to understand the various challenges for correct reasoning in face of vagueness. I was really surprised when my submission was not only accepted, but when you even decided to make me an invited speaker, which entailed a longer presentation. A version of the contribution soon afterwards appeared as [7], again on your invitation.