 Although these critical points might affect the overall reception of Gilbert’s theory, it surely provides insights concerning some features a group is likely to exhibit in order to count as a subject of collective intentionality. In particular, its members need to create a structure that turns the group into an unified entity in the sense that it is made the subject of attitudes they together accept and are committed to act on. This may, as Hindriks (2008a) notes, imply that more is needed than the joint commitment that can be explicated in view of phenomena such as spontaneous joint walks. For instance, the formation of an effective citizens’ movement may require that the individual agents involved accept the goal of the joint enterprise and an internal structure in which roles, competencies and decision-making mechanisms are defined (see also French 1984).