 This gives the structure of what Bratman calls a “shared intention,” which he takes to be an intention to J shared by the participants. It is depicted as consisting in a complex nexus of interdependent individual attitudes and not as the intention of a collective agent or as a state of some collective mind (cf. Bratman 1999: 122–3). For there to be a joint activity, Bratman holds, the participating agents have to intend this activity in such a way that their so intending is aligned both socially and with other plans (or subplans) on each side and that it is common knowledge between them.