 The old account took linguistic conventions to be grounded in co-ordination between speakers generally. We each communicate in English because we think we’ll be understood that way given everyone else communicates that way, and we want to be understood. In the new account there is still this kind of many-way co-ordination between all the speakers of a language, but the most basic kind of co-ordination is a two-way co-ordination between individual speakers, who want to be understood, and hearers, who want to understand. This seems like a more natural starting point. The new account also makes it possible for someone to be part of a population that uses a language even if they don’t say anything because they don’t have anything to say. As long as they are trusting in L, they are part of the population that conforms to the linguistic regularity.