Michael Bratman [1992] offers an influential proposal in a reductive vein that makes use of his planning conception of intentions.
For further views, see Gilbert 2009 (some discussion of which is below), Korsgaard's interpretation of Kant in her 2009, 189ff, and Roth 2004, whose conception of intentions allows him to appeal to an interpersonal mechanism similar in some respects to that of commands.
Tomasello refers to Searle's, Gilbert's and Bratman's accounts, but remains largely noncommittal as to the question of what exactly the conception of shared intention he has in mind amounts to (Schmid 2012).
But on the hypothesis that democratically constituted assemblies have justified power to shape rights and obligations as they choose, some conception of such assemblies' linguistic intentions, or of their intention to affect the law in some particular way by the enactment, might be given priority.
Thoreau's work anticipates certain later developments in pragmatism, phenomenology, and environmental philosophy, and poses a perennially valuable challenge to our conception of the methods and intentions of philosophy itself.
But there is some worry that Broome's conception of normative constraints doesn't address the element of commitment and stability that is distinctive of intention.
According to our commonsense conception of agency, our reasons and conscious intentions tend to make a real difference to how we act (D'Andrade 1987; Malle 2004, for instance).
However, his conception suggests that a Searlean version may be the basic form of shared intention, and that a normatively stabilized conception of collective intentionality as developed by Gilbert may be adequate for the forms of shared intention coming a later stage in development.
It was always a question of intention.
The power of "intention".
