Argumenta – Journal of Analytic Philosophy

Eric Olson has made an important addition to the discussion started by Parfit of the argument from the possibility of fission to the unimportance of personal identity. Olson’s discussion is challenging. I want, more briefly, to highlight what is the most important consequence of it. This is that it is metaphysically impossible, impossible in the strongest sense, that any version of Parfit’s argument from fission can yield his conclusion. Olson argues specifically that this is impossible if what he calls a ‘capacious ontology’ is assumed. I argue that it is…

In a recent paper, Olson (2019) returned to Parfit’s argument from the possibility of fission to the unimportance of identity to claim that it is inconsistent with Parfit’s ontological commitments. Picking up Olson’s claim, Noonan (2024) argues that one consequence of this is that Parfit’s argument necessarily fails to yield its conclusion. Here I show that Noonan’s ontological stance is similar to Parfit's in one significant sense, thus diminishing the scope of his claim. As a result, I hold that if we want to defend that personal identity is what…

The persistence of social groups through change is a matter of debate in social ontology. While mereological approaches contend that social groups persist if formed by the same members, other accounts leaning towards structuralism find that what ensures the persistence of social groups is instead continuity of structure. The aim of this paper is to challenge the idea that a structuralist account is bound to hold that continuity of structure is necessary and sufficient condition for persistence. First, I consider membership changes. I argue that for structure-based metaphysics, not all…