Björn Petersson

‘The Second Mistake’ (TSM) is to think that if an act is right or wrong because of its effects, the only relevant effects are the effects of this particular act. This is not (as some think) a truism, since ‘the effects of this particular act’ and ‘its effects’ need not co-refer. Derek Parfit's rejection of TSM is based mainly on intuitions concerning sets of acts that over-determine certain harms. In these cases, each act belongs to the relevant set in virtue of a causal relation (other than marginal contribution) to a specific harmful event. This feature may make an act wrong, in a fashion consequentialists could admit. That explication of TSM does not rely on the questionable assumption that the set of acts is what harms here. Independently of this, there are several other reasons to prefer it to the ‘mere participation’ approach. Correspondence:c1 [email protected].

Different versions of the idea that individualism about agency is the root of standard game theoretical puzzles have been defended by Regan 1980, Bacharach, Hurley, Sugden :165–181, 2003), and Tuomela 2013, among others. While collectivistic game theorists like Michael Bacharach provide formal frameworks designed to avert some of the standard dilemmas, philosophers of collective action like Raimo Tuomela aim at substantive accounts of collective action that may explain how agents overcoming such social dilemmas would be motivated. This paper focuses on the conditions on collective action and intention that need to be fulfilled for Bacharach’s “team reasoning” to occur. Two influential approaches to collective action are related to the idea of team reasoning: Michael Bratman’s theory of shared intention and Raimo Tuomela’s theory of a we-mode of intending. I argue that neither captures the “agency transformation” that team reasoning requires. That might be an acceptable conclusion for Bratman but more problematic for Tuomela, who claims that Bacharach’s results support his theory. I sketch an alternative framework in which the perspectival element that is required for team reasoning - the ‘we-perspective’ - can be understood and functionally characterized in relation to the traditional distinction between mode and content of intentional states. I claim that the latter understanding of a collective perspective provides the right kind of philosophical background for team reasoning, and I discuss some implications in relation to Tuomela’s assumption that switching between individual and collective perspectives can be a matter of rational choice.

Sometimes it seems intuitively plausible to hold loosely structured sets of individuals morally responsible for failing to act collectively. Virginia Held, Larry May, and Torbj rn T nnsj have all drawn this conclusion from thought experiments concerning small groups, although they apply the conclusion to large-scale omissions as well. On the other hand it is commonly assumed that (collective) agency is a necessary condition for (collective) responsibility. If that is true, then how can we hold sets of people responsible for not having acted collectively? This paper argues that that loosely structured inactive groups sometimes meet this requirement if we employ a weak (but nonetheless non-reductionist) notion of collective agency. This notion can be defended on independent grounds. The resulting position on distribution of responsibility is more restrictive than Held's, May's or T nnsj 's, and this consequence seems intuitively attractive