In this paper, I identify a central problem for conceptual engineering: the problem of showing concept-users why they should recognise the authority of the concepts advocated by engineers. I argue that this authority problem cannot generally be solved by appealing to the increased precision, consistency, or other theoretical virtues of engineered concepts. Outside contexts in which we anyway already aim to realise theoretical virtues, solving the authority problem requires engineering to take a functional turn and attend to the functions of (...) concepts. But this then presents us with the problem of how to specify a concept’s function. I argue that extant solutions to this function specification problem are unsatisfactory for engineering purposes, because the functions they identify fail to reliably bestow authority on concepts, and hence fail to solve the authority problem. What is required is an authoritative notion of conceptual function: an account of the functions of concepts which simultaneously shows why concepts fulfilling such functions should be recognised as having authority. I offer an account that meets this combination of demands by specifying the functions of concepts in terms of how they tie in with our present concerns. (shrink)

This essay is concerned with six linguistic moves that we commonly make, each of which is considered in turn. These are: stating rules of representation; representing things categorically; mentioning expressions; saying truly or falsely how things are; saying vaguely how things are; and stating rules of rules of representation. A common-sense view is defended of what is involved in our doing each of these six things against a much more sceptical view emanating from the idea that linguistic behavior is fundamentally (...) messy. Both the fifth move and the sixth move involve vague concepts, and much of the essay is concerned with developing an approach to various problems and puzzles that attach to such concepts, most notably the sorites paradoxes. (shrink)

The central claim is that the semantic knowledge exercised by people when they speak is practical knowledge. The relevant idea of practical knowledge is explicated, applied to the case of speaking, and connected with an idea of agents’ knowledge. Some defence of the claim is provided.

Many who agree with Kripke that ‘sloppy, colloquial speech’ often confuses use and mention would deem ‘ a is called N’ an example of such confusion, insisting on ‘ a is called "N"’ as the properly philosophical, un-sloppy, way of saying what is usually intended. Delia Graff Fara demurs – in my view, rightly. But the reasons she gives for doing so are, I think, themselves questionable and in any case do not go to the heart of the mistake on (...) which Kripke's condemnation of colloquial speech as sloppy rests. I discuss Fara's claims that what is behind the mistake is failing to appreciate the difference between "appellative" and "referring" uses of names and overlooking the fact that names sometimes function as predicates, finding fault with both. I then argue that the mistake stems from adherence to a widely accepted picture of the mechanics of mentioning and that it is that picture that is confused, not ordinary speakers. (shrink)