Several have denied that there is, specifically, a criterion of identity for persons and some deny that there are, for any kind, diachronic criteria of identity. I argue, however, that there are no criteria of identity, either synchronic or diachronic, for any kind whatsoever. I begin by elaborating the notion of a criterion of identity in order to clarify what exactly is being denied when I maintain there are none. I examine the motivation of those who qualify in some way (...) the general claim that there are synchronic and diachronic criteria of identity for every kind, then present my direct and categorical argument against such criteria. I next evaluate the objections of those who argue that rejecting criteria of identity has untenable results. These objections are ineffective, each based on the incorrect assumption that if there is no criterion of identity for a kind, the identity of an instance of that kind is independent of its qualities. I conclude by considering some of the upshots of rejecting criteria of identity and the insight doing so provides into things in general and the limits of ontological inquiry. (shrink)

In virtue of what do things persist through time? Are there criteria of their identities through time? Anti-criterialists say no. One prominent challenge to anti-criterialism comes in two steps. The first step is to show that anti-criterialists are committed specifically to the claim that there are no informative metaphysically sufficient conditions for identity through time. The second step is to show that this commitment yields absurd results. Each step of this challenge is open to objection. However, in what follows, I (...) will refortify this challenge to anti-criterialism by offering new reasons to take each step. (shrink)

En este trabajo se analiza la cuestión de si el volcado de la mente en una máquina (mind uploading), en caso de ser alguna vez tecnológicamente posible, mantendría o destruiría la identidad personal de quien experimentara el volcado. Se verá cómo podría contestarse a la cuestión en función de los criterios para el mantenimiento de la identidad personal que se asuman. No hay una respuesta única, puesto que la identidad personal se mantendría o no en función de los supuestos aceptados. (...) No obstante, para la mayor parte de las concepciones filosóficas sobre la identidad personal, ésta no se mantendría en un proceso de volcado de la mente en una máquina. Si esto es así, habría que concluir que, desde diversos enfoques, dicho volcado sería equivalente a la desaparición del sujeto, es decir, a su muerte, y solo desde posiciones muy limitadas podría defenderse lo contrario. (shrink)