One of the most popular and enduring approaches to indeterminacy phenomena (e.g., vagueness) over the past several decades has been some form or another of supervaluationism. I argue that supervaluationism is inadequate as a model of indeterminacy: There is an entire class of examples of indeterminacy, characterized by a common “branching” structure, that cannot be modeled in the way supervaluationism proposes. I demonstrate my conclusion explicitly with respect to two specific examples—indeterminate personal identity and indeterminate reference—showing how supervaluationism can model (...) neither. Importantly, my arguments apply to both traditional “semantic” and more recent “metaphysical” versions of supervaluationism. (shrink)

It is often argued that associations are intelligent organisms with minds and intentional states of their own. It is also argued that groups are merely a plurality of individuals who are related or associated only in a specific and limited sense. This paper draws on both classical and contemporary scholarship to develop an ontological account of persons which has real-world legal and ethical implications.

The method of Conceptual Analysis makes use of natural language speaker intuitions about the meanings of expressions, and relies on an externalist assumption about meanings—namely, that they can be given in terms of referential relations and truth. This article argues that this widely used methodology in metaphysics is troubled, because the assumed externalist hypothesis about natural language meanings is beset with trenchant obstacles in explaining linguistic phenomena. It argues that the use of Conceptual Analysis in metaphysical investigation inherits the difficulties (...) for the externalist hypothesis generally assumed by metaphysical inquiry. It explores two cases of such investigation that serve to exemplify the breadth of topics susceptible to troubles with the externalist hypothesis regarding natural language meanings: the extended mind hypothesis and the metaphysics of causation. (shrink)

RÉSUMÉ: J’étudie la conception selon laquelle l’identité d’une œuvre d’art est déterminée par ses propriétés esthétiques; et je la compare avec la conception selon laquelle l’identité de l’œuvre d’art est déterminée par les origines de sa composition. Je soutiens que les deux théories présentent des qualités et des défauts, et que les qualités de l’une sont les défauts de l’autre. Cela nous révèle le genre de théorie dont nous avons besoin.

Questions of identity over time are often hard to answer. A long tradition has it that such questions are somehow soft: they have no unique, determinate answer, and disagreements about them are merely verbal. I argue that this claim is not the truism it is taken to be. Depending on how it is understood, it turns out either to be false or to presuppose a highly contentious metaphysical claim.

It has often been claimed that orthodox thinking about personal identity undermines the moral authority of advance directives in dementia by implying that the signer of the directive is numerically different from the severely demented patient. This is the ‘identity problem'. I introduce the problem, outline some well‐known solutions, and explain why they might be deemed unattractive. I then propose an alternative solution. It promises to be compatible with orthodox thinking about personal identity. I discuss three ways in which it (...) might be challenged and find that none is convincing. Personal identity is no bar to the moral authority of advance directives. (shrink)

It is thought by some philosophers that certain arguments developed by Peter Strawson in Individuals show that Derek Parfit's claim in Reasons and Persons that experiences can be referred to without referring to persons is incoherent. In this paper I argue that Parfit's claim is not threatened by these arguments.

With substance dualism and the existence of God, Swinburne (2004, The Existence of God, Oxford University Press, Oxford) and Moreland (2010, Consciousness and the Existence of God, Routledge, New York) have argued for a very powerful explanatory mechanism that can readily explain several philosophical problems related to consciousness. However, their positions come with presuppositions and ontological commitments which many are not prepared to share. The aim of this paper is to improve on the Swinburne-Moreland argument from consciousness by developing an (...) argument for the existence of God from consciousness without being committed to substance dualism. The argument proceeds by suggesting a solution to the exceptional-point-of-view problem, i.e., the question how it can be explained that there is a conscious being lucky enough to experience the point of view of a relatively tiny brain amidst a giant universe that is indifferent about which physical entities it brings about according to the laws of physics. (shrink)

The central objection to neo-Lockeanism about persons is the too many thinkers problem: NLP ends up with an absurd multiplication of thinkers. Sydney Shoemaker attempts to solve this problem by arguing that the person and the animal do not share all of the same physical properties. This, according to him, leads to the idea that mental properties are realized in the person’s physical properties only. The project of this paper is to reject Shoemaker’s physicalist solution to the too many thinkers (...) problem. I first argue that his physicalism fails to explain why two physically indistinguishable objects differ in their persistence conditions and physical properties. I then argue that Shoemaker illicitly treats the case of the person and the case of the animal differently, first in regard to cerebral function and its relation to mental properties, and second in regard to brainstem function and its relation to biological properties. This shows that Shoemaker’s solution actually undermines his entire argument. (shrink)

Eric Olson and Ned Markosian have, independently, complained that the ways in which the problem of personal identity has been formulated rule out certain views of personal identity just by how the problem is formulated. As a result, both have proposed alternative formulations, each attempting theory neutrality. They have not succeeded, however, since both of their formulations, as well as the formulations that they have rejected, are biased against presentist solutions to the problem, and some are biased against four-dimensionalist solutions, (...) as well as stage theory solutions. In this paper, I show how previous formulations, including Olson’s and Markosian’s, are biased in the ways mentioned, and I propose a list of criteria that any formulation of the problem must meet in order to be theory neutral. Finally, I attempt a formulation that is neutral. (shrink)

Many requirements of rationality rely for their application on facts about identity at a time. Take the requirement not to have contradictory beliefs. It is irrational if a single agent bel...

This paper makes use of an example of Williams’s, an example involving so-called psychological deprogramming–reprogramming, in arguing that procedures such as Teletransportation would not provide what matters to us in our self-interested concern for the future. This is so because the beliefs and other psychological states of a resultant person would not be appropriately causally dependent on any beliefs or other psychological states of the original person.

Little is known about how the minds and bodies of reincarnated agents are represented. In three studies, participants decided which individual, out of multiple contenders, was most likely to be the reincarnation of a deceased person, based upon a single matching feature between the deceased and each of the candidates. While most participants endorsed reincarnation as entailing a new body, they reasoned that candidates with a similar physical mark or a similar episodic autobiographical memory to the deceased, when alive, were (...) more likely than candidates with other physical or psychological based similarities to be the reincarnation of the deceased. As predicted, by increasing the distinctiveness of a matching physical mark and an episodic autobiographical memory, while holding others constant, likelihood judgments for the candidate with the similar distinctive physical mark were significantly higher than candidates with non-distinctive physical marks, but differences between the distinct and general episodic autobiographical memory condition did not reach statistical significance. These findings support the claim that we intuitively represent reincarnated agents as psychologically determined but physically embodied, and that different assumptions underpin the use of physical and psychological features to establish identity in reincarnation contexts. (shrink)

The central doctrine of Christianity is that God intervened in human history in the person of Jesus Christ in a unique way; and that quickly became understood as the doctrine that in Jesus Christ God became man. In AD 451 the Council of Chalcedon formulated that doctrine in a precise way utilizing the current philosophical terminology, which provided a standard for the orthodoxy of subsequent thought on this issue. It affirmed its belief in ‘our Lord Jesus Christ, … truly God (...) and truly man, … in two natures … the distinction of natures being in no way annulled by the union, but rather the characteristics of each nature being preserved and coming together to form one person’. One individual, one thing that is; and being a rational individual, one person. An individual's nature are those general properties which make it the sort of individual it is. The nature of my desk is to be a solid material object of a certain shape; the nature of the oak tree in the wood is to take in water and light, and to grow into a characteristic shape with characteristic leaves and give off oxygen. Chalcedon affirmed that the one individual Jesus Christ had a divine nature, was God that is; and it assumed that the divine nature was an essential nature. (shrink)

Whether morality has rational authority is an open question insofar as we can seriously entertain conceptions of morality and practical reason according to which it need not be contrary to reason to fail to conform to moral requirements. Doubts about the authority of morality are especially likely to arise for those who hold a broadly prudential view of rationality. It is common to think of morality as including various other-regarding duties of cooperation, forbearance, and aid. Most of us also regard (...) moral obligations as authoritative practical considerations. But heeding these obligations appears sometimes to constrain the agent's pursuit of his own interests or aims. If we think of rationality in prudential terms–as what would promote the agent's own interests–we may wonder whether moral conduct is always rationally justifiable. Indeed, we do not need to think of rationality in exclusively prudential terms to raise this worry. The worry can arise even if there are impartial reasons–that is, nonderivative reasons to promote the welfare of others. (shrink)

According to the Psychological Account of personal identity, personal identity across time is maintained by some form of psychological overlap or continuance. I show that the Psychological Account has trouble accommodating cases of transient retrograde amnesia. In such cases, the transitivity of psychological continuity may break down. I consider various means of responding to this problem, arguing that the best available response will undercut our ability to rely on intuitions about brain transplantation to support the Psychological Account. When the Psychological (...) Account is re-interpreted in such a way as to overcome the problems posed by cases of transient retrograde amnesia, it turns out that standard brain transplantation cases involve details which are strictly irrelevant according to the theory. On the other hand, these features seem to drive our intuitions about survival in these cases. In this way, my argument undermines one of the key motivations for adopting the Psychological Account. (shrink)

The central fact about the problem of personal identity is that it is a problem posed by an apparent dichotomy: the dichotomy between the objective, third-person viewpoint on the one hand and the subjective perspective provided by the first-person viewpoint on the other. Everyone understands that the mind/body problem is precisely the problem of what to do about another apparent dichotomy, the duality comprising states of consciousness on the one hand and physical states of the body on the other. By (...) contrast, contemporary discussions of the problem of personal identity generally display little or no recognition of the divide which to my mind is at the heart of the problem. As a consequence, there has been a relentlessly third-personal approach to the issue, and the consequent proposal of solutions which stand no chance at all of working. I think the idea that the problem is to be clarified by an appeal to the idea of a human being is the latest manifestation of this mistaken approach. I am thinking in particular of the claim that what ought to govern our thinking on this issue is the fact that human beings constitute a natural kind, and that standard members of this kind can be said to have some sort of essence. Related to this is the idea that ‘person’, while not itself a natural kind term, is not a notion which can be framed in entire independence of this natural kind. (shrink)

As regards the question of what matters in survival two views have been identified: on the one hand, we have the view that what matters is identity (the so-called ?commonsense view?) and, on the other hand, we have the view that what matters is the holding of certain psychological connections between various mental states over time (the relation R). Several attempts have tried to reconcile these two views involving the so-called ?multiple occupancy view? or ?cohabitation thesis?. Even if the latter (...) comes in several formulations, common elements are, positing the appropriateness of a description of the fission case according to which the post-fission persons existed prior to fission and also, that what determines that two persons who exist at a certain time are distinct can be facts about what is the case at other times. The paper discusses three of the most influential formulations of the multiple occupancy view, which intend to reconcile identity with what matters, and argues that for various reasons these at least do not work in this regard. (shrink)

In this work it is proposed that the conditions of identity for biological organisms are given by the following principle: for all organisms x and y, x = y if and only if x has been caused by the self-preserving activity of y. This principle determines both the inter-temporal identity of organisms and the identity of organism in different possible worlds. It unifies what can be supposed about conditions of identity coming from —at least— three different conceptions about the nature (...) of biological organisms, those of RobertWilson, Thomas Pradeu and Ellen Clarke. These conceptions are presented and compared. (shrink)

The work analyzes two competing arguments in the issue of abortion and shows that each requires a different theory of personal identity. Further, I analyze those theories and show what moral premises they are compatible with and what implications there are for the abortion debate.