Grice e Codronchi

 For a time, I was attracted by the idea that observance of the CP and the maxims, in a talk exchange, could be thought of as a quasi-contractual matter, with parallels outside the realm of discourse. If you pass by when I am struggling with my stranded car, I no doubt have some degree of expectation that you will offer help, but once you join me in tinkering under the hood, my expectations become stronger and take more specific forms (in the absence of indications that you are merely an incompetent meddler); and talk exchanges seemed to me to exhibit, characteristically, certain features that jointly distinguish cooperative transactions: 1. The participants have some common immediate aim, like getting a car mended; their ultimate aims may, of course, be independent and even in conflict-each may want to get the car mended in order to drive off, leaving the other stranded. In characteristic talk exchanges, there is a common aim even if, as in an over-the-wall chat, it is a second-order one, namely, that each party should, for the time being, identify himself with the transitory conversational interests of the other. 2. The contributions of the participants .should be dovetailed, mutually dependent. 3. There is some sort of understanding (which may be explicit but which is often tacit) that, otl1er things being equal, the transaction should continue in appropriate style unless both parties are agreeable that it should terminate. You do not just shove off or start doing something else.