Truth is standardly considered a requirement on epistemic acceptability. But science and philosophy deploy models, idealizations and thought experiments that prescind from truth to achieve other cognitive ends. I argue that such felicitous falsehoods function as cognitively useful fictions. They are cognitively useful because they exemplify and afford epistemic access to features they share with the relevant facts. They are falsehoods in that they diverge from the facts. Nonetheless, they are true enough to serve their epistemic purposes. Theories that contain (...) them have testable consequences, hence are factually defeasible. (shrink)

In this paper, I examine Nelson Goodman’s pluriworldism, understood as the claim that there exists a plurality of actual worlds. This proposal has generally been quickly dismissed in the philosophical literature. I argue that we ought to take it more seriously. As I show, many of the prima facie objections to pluriworldism may receive straightforward answers. I also examine in detail Goodman’s argument for the conclusion that there are many worlds and attempt to show how it might be supported. Eventually, (...) I discuss some underexplored challenges to pluriworldism. (shrink)

In the present paper, I try to defend a coherent interpretation of Goodman’s relativism by responding to the main objections of the critics. I also discuss the significance of his pluralism by relating it to the notion of construction. This will show the relevance of Goodman’s philosophy for the present days.