A widespread assumption in experimental comparative cognition is that, barring compelling evidence to the contrary, the default hypothesis should postulate the simplest cognitive ontology consistent with the animal’s behavior. I call this assumption the principle of cognitive simplicity . In this essay, I show that PoCS is pervasive but unjustified: a blanket preference for the simplest cognitive ontology is not justified by any of the available arguments. Moreover, without a clear sense of how cognitive ontologies are to be carved up (...) at the joints—and which tools are appropriate for the job—PoCS rests on shaky conceptual ground. (shrink)

Traditional accounts of the fair play principle suggest that, under appropriate conditions, those who benefit from the cooperative labor of others acquire an obligation of repayment. However, these accounts have had little to say about the nature of such obligations within morally or legally problematic cooperative schemes, taking the matter to be either straightforward or unimportant. It is neither. The question of what sorts of fair play obligations obtain for those who benefit from illicit cooperative activity is a matter of (...) great complexity and consequence with implications for, inter alia, global economic justice. In this essay, I explore the nature of this obligation within illicit cooperative schemes, specifically those with so-called negative externalities, or deleterious effects on non-members of the scheme. I conclude that the willing beneficiaries of such schemes acquire a fair-play obligation to recognize and respond to their culpability. This reconceptualization of the fair play principle opens up new avenues for exploring the obligations of those who benefit from acts of collective wrongdoing. (shrink)