So here’s an X-Phi investigation I and others interested in logic and its philosophy needn’t care about: use of the term ‘contradictory’. (This thought occurs to me when listening to reporters and commentators on the news, proclaiming that some people’s testimony about various events is “contradictory” or “inconsistent,” by which I taken them to mean not much more than that successive querying by authorities or reporters generates different answers on different occasions.) That is, the study and development of logic has only the remotest connection to ordinary language and thought involving the use of the term ‘contradictory’ and ‘inconsistent,’ remote enough that it would be a matter more of individual psychology than required methodology to guide theory by such X-Phi investigations.
I expect widespread agreement on this point, and it raises an interesting question about when and where X-Phi investigations should matter more. Some, for example, think they matter more in epistemology, especially that part of epistemology constituting the theory of knowledge (shame, shame, shame on those or you who have thought that’s the entirety of the discipline! 🙂 ). So what’s the difference between logic and epistemology on this point?