Abstract

Personites are shorter lived, very person‐like things that extend across part but not the whole of a person's life. That there are such things is a consequence of the standard perdurance view championed by Lewis and Quine; it is also a consequence of liberal endurantist views which allow such things coinciding with persons during part of their lives, though not themselves parts of the persons. Johnston and Olson argue that the existence of personites has bizarre moral consequences and renders what are manifestly wholly uncontentious moral judgements contentious. It suffices to note that, e.g., they say that if there is a personite now coinciding with me that will no longer exist tomorrow, though I will, this renders morally problematic my planned visit to the dentist today, since the personite, unlike me, will suffer the pain today but not live long enough to experience any gain. The same reasoning renders morally problematic spending time learning a difficult language in anticipation of a trip abroad. And irritatingly, in accordance with this reasoning, the child who claims that making him do his homework ‘isn't fair’, turns out to be arguably right. Moreover, since not only persons and personites, if they exist, but also, for example, dogs and what we might call caninites, would seem to have a right to be counted in the moral calculus, it can also be argued that just as it is morally problematic to force a lazy child to do homework, it is morally problematic to put an obese dog on a strict diet. What underpins the reasoning here is the basic thought that no relation one sentient being has to another can deprive it of the right to be counted in the moral calculus. Hence, the relation a personite has to a person cannot do so. Given this basic thought the acknowledgement of the existence of personites is, Johnston argues, morally disastrous or at least dictates an extreme hedonism.