Sloppy identity under ellipsis is generally attributed to the pronoun in ellipsis being a bound variable. However, sloppy identity can be licensed in structural configurations in which variable binding is ordinarily blocked. This paper provides a solution for this mismatch by reanalyzing the pronouns with the unexpected sloppy readings as E-type pronouns. Under the proposed analysis, the distribution of such pronouns is correctly predicted. It will also be shown that the analysis is successfully extended to sloppy identity (...) in association-with-focus cases. (shrink)

Anna Mahtani describes a puzzle meant to show that the Ex-Ante Pareto Principle is incomplete as it stands and, since it cannot be completed in a satisfactory manner, decades of debate in welfare economics and ethics are undermined. In this paper, we provide a better solution to the puzzle which saves the Ex-Ante Pareto Principle from this challenge. We also explain how the plausibility of our solution is reinforced by its similarity to a standard solution to an analogous puzzle in (...) quantified epistemic logic. We also show that even if the puzzle were to remain unsolved, its impact on welfare economics and ethics would be limited. (shrink)

Anna Mahtani describes a puzzle meant to show that the Ex Ante Pareto Principle is incomplete as it stands and, since it cannot be completed in a satisfactory manner, decades of debate in welfare economics and ethics are undermined. In this paper, we provide a better solution to the puzzle which saves the Ex Ante Pareto Principle from this challenge. We also explain how the plausibility of our solution is reinforced by its similarity to a standard solution to an analogous (...) puzzle in quantified epistemic logic. We also show that even if the puzzle were to remain unsolved, its impact on welfare economics and ethics would be limited. (shrink)

This paper concerns Kripke’s puzzle about belief. I have two goals in this paper. The first is to argue that two leading approaches to Kripke’s puzzle, those of Lewis and Chalmers, are inadequate as they stand. Both approaches require the world to supply an object that the relevant intentional attitudes pick out. The problem is that there are cases which, I argue, exhibit the very same puzzling phenomenon in which the world does not supply an object in the required way. (...) The second goal is to draw out a more general lesson about Kripke’s puzzle. I argue that Kripke’s puzzle should be understood as intimately related to a phenomenon known as ‘intentional identity’, and that an adequate account of Kripke’s puzzle should be extensible to cases in which the relevant attitudes are empty. (shrink)

Frege's puzzle about identity sentences has long challenged many philosophers to find a solution to it but also led other philosophers to object that the evidential datum it is grounded on is false. The present work is an elaboration of this second kind of reaction: it explains why Frege's puzzle seems to resist the traditional objection, giving voice to different and more elaborated presentations of the evidential datum, faithful to the spirit but not to the letter of Frege's puzzle. (...) The final outcome is negative, no satisfactory formulation of the evidential datum is found and Frege's puzzle is challenged until a better formulation of it is found. (shrink)

In 'Chrysippus' Puzzle about Identity', John Bowin (thereafter JB) cogently strengthens David Sedley's reading of the puzzle of Chrysippus as a reductio ad absurdum of the Growing Argument. For Sedley, Chrysippus reduces to absurdity the assumption that matter is the sole principle of identity by refuting its presupposition that the two protagonists of the puzzle, namely Theon and Dion, are related as part to the whole. According to Plutarch's Comm. not. 1083 a8-c1, however, the Growing Argument concludes by (...) posing that growth is actually 'generation' and 'destruction'. In order to avoid the contradiction, Theon should have perished rather than become a part of Dion. JB attempts to answer the questions of whether within the Growing Argument there are elements against Theon being a living part of Dion. He shows that in both Epicharmus' fragment 2 and Plutarch's Comm.not. 1083b 308 "there is nothing to block the inference from matter being the sole principle of identity to the possibility that Theon could be a part of Dion" (246). Again, in exploring whether the above contradiction can be solved, he convincingly argues against Epicharmus' and Plutarch's reading of growth as generation and destruction. In the last part of his article, JB stresses that the reductio ad absurdum of the Growing Argument can be tackled without introducing the concept of 'peculiarly qualified individuals'. (Bryn Mawr Classical Review 2004.04.12). (shrink)

I suggest a solution to two puzzles in Spinoza's metaphysics. The first puzzle involves the mind and the idea of the mind, in particular how they can be identical, even though the mind thinks about bodies and nothing else, whereas the idea of the mind thinks about ideas and nothing else. The second puzzle involves the mind and the idea of a thing that belongs to an unknown attribute, in particular how they can be identical, even though the mind (...) thinks about bodies and nothing else, whereas the idea thinks about things belonging to the unknown attribute and nothing else. I suggest that Spinoza would respond to both puzzles by rejecting the Indiscernibility of Identicals. (shrink)

This paper presents a new cognitivist account for the old puzzle of self-consciousness or knowing self-reference. Knowing self-reference does not rely on reflection on some putative pre-existent pre-reflexive self-consciousness, nor is it the result of a process of identification of oneself as the employer of the relevant token of “I” according to the token-reflexive rule of the first-person pronoun. Rather, it relies on the architecture of the cognitive system. By exploiting the acquaintance relation that every brain has to one’s own (...) body, a “mental file” is opened in a subliminal way to house information about oneself gained through the appropriate proprioceptors. Knowing self-reference based on self-files dispenses with self-identification because the opening of the file in the same brain/body is not a deed of the cognitive system but rather something that takes place sub-personally. (shrink)

We rely on a recent puzzle by Alex Blum to offer a new argument for the old Fitch’s thesis that what we learn a posteriori in Kripkean identity statements like ‘Tully is Cicero’ is contingent and what is not contingent in such statements is analytical, hence hardly a posteriori.

We argue that general social psychological mechanisms can account for prosocial behavior and cooperative norms without the need for punishing Big Gods. Moreover, prosocial religions often do not prevent conflict within their religious groups. Hence, we doubt whether Big Gods and prosocial religions are more effective than alternative identities in enhancing high-level cooperation.

Many philosophers have argued or taken for granted that Frege's puzzle has little or nothing to do with identity statements. I show that this is wrong, arguing that the puzzle can only be motivated relative to a thinker's beliefs about the identity or distinctness of the relevant object. The result is important, as it suggests that the puzzle can be solved, not by a semantic theory of names or referring expressions as such, but simply by a theory of (...) identity statements. To show this, I sketch a framework for developing solutions of this sort. I also consider how this result could be implemented by two influential solutions to Frege's puzzle, Perry's referential-reflexivism and Fine's semantic relationism. (shrink)

In discussion of the "Principle of Identity" in the Treatise Hume presents a puzzle about identity - not a puzzle for semantics, like Frege's, but a puzzle for a theory of representation. In this essay I am less concerned with issues of Hume interpretation and more concerned with the puzzle itself.

© Mind Association 2017This rich and engaging book addresses a nest of questions that have been mostly neglected in recent Anglophone philosophy. These questions concern ordinary uses of the concept of identity in speaking for example of identity crises, of one’s identity as something that can be lost or maintained, of identification with certain groups, traits, values, or beliefs, and so on. That there are these uses, and that they are an important feature of contemporary culture, is (...) beyond question: witness the difficulty in helping undergraduates focus in the classroom on what ‘we’ mean by personal identity, where this meaning is supposed to be distinct from the substantive use of ‘identity’ to mean something that a person has, and that can change or be replaced over the course of their continued life.... (shrink)

According to constitution views of persons, we are constituted by spatially coinciding human animals. Constitution views face an ‘overpopulation’ puzzle: if the animal has my brain, there is another thinker where I am. An influential solution to this problem distinguishes between derivative and non‐derivative property possession: persons non‐derivatively have their personal properties, while inheriting others from their constituters. I will show that this solution raises a new problem, by constructing a puzzle with the absurd result that we instantiate certain properties (...) incompatibly. In setting up the puzzle, I demonstrate the relevance of the bodily awareness and self‐awareness literatures to overpopulation puzzles. (shrink)

이 논문의 목표는 ‘지향적 동일성(intentional identity)’의 퍼즐을 푸는 것이다. 이 퍼즐은 믿음이나 소망, 놀라움 등 명제태도에 대해 보고하는 문장이 명제 태도들이 동일한 초점, 혹은 대상을 향한다고 말하고 있을 때 이를 제대로 표현할 형식화를 찾기 어렵다는 문제를 말한다. 명제 태도 안에 들어있는 명사구와 대명사 간의 전방 조응 관계는 대명사를 기술구로 대체하는 분석으로는 표현될 수 없고 그렇다고 명제태도 안으로 양화하는 분석도 만족스럽지 못하다. 나는 이런 어려움과 이를 처리하려는 시도들을 자세히 살펴본 후, 생각 속 대상, 즉 사고대상을 도입하는 해법이 불가피함을 주장한다. 이어서 (...) 말썽을 더 심화시킨 에델베르그의 새 퍼즐도 살펴볼 텐데 그로써 사고대상을 변항 값으로 취하는 존재양화 문장으로의 분석도 적절한 해법이 아님을 알게 된다. 새로운 분석은 비한정명사구의 의미론적 기여를 지시라고 본 도넬란의 주장에 기대어, 명사구와 대명사 모두에 일정한 사고대상을 지시체로 할당한다. 최종적으로 사고대상의 정체성에 대해 객관적인 토론이 불가능하다는 반대에 답한다. (shrink)

The aim of the paper is to discuss some recent variants of familiar puzzles concerning the relations of parts to wholes put forward by Trenton Merricks and Eric Olson. The argument is put forward that so long as the familiar distinction between 'loose and popular' and 'strict and philosophical' senses of identity claims is accepted the paradoxical conclusions at which Merricks and Olson arrive can be resisted. It is not denied that accepting the distinction between 'loose and popular' (...) and 'strict and philosophical' senses of identity claims is itself a departure from common-sense, but it is argued that it is the smallest such departure available to us. (shrink)

My belief that Socrates was wise, and your belief that Socrates was mortal can be said to have a common focus, insofar as both these thoughts are about Socrates. In Peter Geach’s terminology, the objects of our beliefs bear the feature of intentional identity, because our beliefs share the same putative target. But what if it turned out that Socrates never existed? Can a pair of thoughts share a common focus if the object both thoughts are about, does not (...) actually, really exist? Object-centric accounts of intentionality which explain the aboutness or directedness of thought in terms of the intentional object the thought in question is about, contend that thoughts which share a common focus do so in virtue of both thoughts simply being about the same intentional object. However, Alexander Sandgren contends that such theories face difficulties in explaining a puzzle of intentional identity put forward by Walter Edelberg, in which a pair of sentences seem to differ in truth value but are purportedly logically equivalent on the object-centric theory. If this is right, then it seems that any account which explains intentionality with reference to an intentional object is threatened by this result, whether this object be abstract, merely possible, Meinongian, or otherwise. In this paper, I argue that Edelberg’s Puzzle is analogous to Frege’s Puzzle and the same tools conventionally used to solve Frege’s Puzzle can be used to solve Edelberg’s Puzzle. I then propose a new object-centric solution to Edelberg’s Puzzle which takes into account modes of presentation and which is able to accommodate all the relevant linguistic data. (shrink)

Terence Parsons presents a lively and controversial study of philosophical questions about identity. Because many puzzles about identity remain unsolved, some people believe that they are questions that have no answers and that there is a problem with the language used to formulate them. Parsons explores a different possibility: that such puzzles lack answers because of the way the world is (or because of the way the world is not). He claims that there is genuine indeterminacy (...) of identity in the world. He articulates such a view in detail and defends it from a host of criticisms. (shrink)

To maintain my neutral monist or multi-aspect view of human reality (or indeed to defend the Cartesian dualism assumed by Puccetti & Dykes, it is wrong to relate the mind to the brain alone. A person's mind should be related to the physical environment, including the body, in addition to the brain. Furthermore, we are unlikely to understand the detailed functioning of an individual brain without knowing the history of its interactions with the external and internal environments during that person's (...) life, or indeed any inherited neurogenomics (circuitry innately adapted to ecology. (shrink)

Monists about material constitution typically argue that when Statue is materially constituted by Clay, Statue is just Clay. Pluralists about material constitution deny that constitution is identity: Statue is not just Clay. When Clay materially constitutes Statue, Clay is not identical to Statue. I discuss three familiar puzzles involving grounding, overdetermination and conceptual issues, and develop three new puzzles stemming from the connection between mereological composition and material constitution: a mereological puzzle, an asymmetry puzzle, and a structural (...) puzzle. (shrink)

In this article I discuss various possible ways of understanding the character of and relations between legal systems in the European Union. In particular, I consider whether there is an EU legal system distinct from and in addition to the national legal systems of EU Member States, or whether it is better to conceive of EU law merely as an aspect of Member States’ legal systems, or indeed whether we should think of there being but a single EU legal system (...) of which Member States’ “national legal systems” are in some sense sub-systems.Resumen:Este artículo discute varios modos posibles de comprender el carácter de los sistemas jurídicos de la Unión Europea y sus relaciones. En particular, se plantea la cuestión de si existe un sistema jurídico en la Unión Europea adicional y distinto del sistema jurídico nacional de los Estados miembros; o si es mejor concebir el derecho de la Unión Europea simplemente como un aspecto de los sistemas jurídicos de los Estados miembros; o bien, si es que deberíamos pensar que no hay sino sólo un sistema jurídico en la Unión Europea con respecto del cual los “sistemas jurídicos nacionales” de los Estados miembros son en cierta forma subsistemas. (shrink)

In a 2005 paper Ólafur Páll Jónsson presents a puzzle that turns on intentional identity and definite descriptions. He considers eight solutions and rejects them all, thus leaving the puzzle unsolved. In this paper I put forward a solution. The puzzle is this. Little Lotta wants most of all a bicycle for her birthday, but she gets none. Distracted by the gifts she does receive, she at first does not think about the bike. But when seeing her tricycle, she (...) is reminded of the bike. The question is how we are to analyse these two occurrences of ‘the bike’ in the absence of a unique bike that Lotta wants. So the semantics of ‘the bike’ needs to be spelt out, and it must be made explicit what the complements of Lotta’s attitudes are. My analysis shows that the attributer’s usage of ‘the bike’ blurs the distinction between a second-order and a first-order intension (a property concept and a property, respectively). My solution can be summed up in this two-premise argument. (a) In the state-of-affairs S, the property of being a bike is the extension of the property concept the property such that Lotta wants an instance of it more than any other; (b) in S, Lotta does not think about/is reminded of the property that she wants an instance of more than any other; (c) therefore, in S Lotta does not think about/is reminded of the property of being a bike. This solution requires looking beyond the confines of denotational semantics, which all of Jónsson’s eight solution candidates belong to. (shrink)

_Identity and Discrimination_, originally published in 1990 and the first book by respected philosopher Timothy Williamson, is now reissued and updated with the inclusion of significant new material. Williamson here proposes an original and rigorous theory linking identity, a relation central to metaphysics, and indiscriminability, a relation central to epistemology.__ Updated and reissued edition of Williamson’s first publication, with the inclusion of significant new material Argues for an original cognitive account of the relation between identity and discrimination that (...) has been influential in the philosophy of perception Pioneers the use of epistemic logic to solve puzzles about indiscriminability Develops the application of techniques from mathematical logic to understand issues about identity over time and across possible worlds. (shrink)

Peter Geach's puzzle of intentional identity is to explain how the claim ‘Hob thinks a witch has blighted Bob's mare, and Nob wonders whether she killed Cob's sow’ is compatible with there being no such witch. I clarify the puzzle and reduce it to the familiar problem of negative existentials. That problem is a paradox of representations that seem to include denials of commitment , to carry commitment to what they deny commitment to, and to be true. The best (...) proposed solutions can be understood through this paradox; I evaluate them, and defend a new solution. (shrink)

The puzzle of resultant moral luck arises when we are disposed to think that an agent who caused a harm deserves to be blamed more than an otherwise identical agent who did not. One popular perspective on resultant moral luck explains our dispositions to produce different judgments with regard to the agents who feature in these cases as a product not of what they genuinely deserve but of our epistemic situation. On this account, there is no genuine resultant moral luck; (...) there is only luck in what evidence becomes available to observers. In this paper, I develop an evolutionary account of our inclination to take the results of actions as evidence for the mental states of agents, thereby explaining why the resulting intuitions are recalcitrant to correction. The account explains why the puzzle of resultant moral luck arises: because our disposition to take the harms agents cause as evidence of their mental states can produce intuitions which conflict with those that arise when we examine agents’ mental states without reference to the results of their actions. The account also helps to solve the puzzle of resultant moral luck, by providing a strong reason to ignore the intuitions caused by our disposition to regard actual harms as evidence of mental states. Since these intuitions arise using an unreliable proxy for agents’ mental states, they ought to be trumped by more reliable evidence. (shrink)

What is the self? And how does it relate to the body? In the second edition of Personal Identity, Harold Noonan presents the major historical theories of personal identity, particularly those of Locke, Leibniz, Butler, Reid and Hume. Noonan goes on to give a careful analysis of what the problem of personal identity is, and its place in the context of more general puzzles about identity. He then moves on to consider the main issues and (...) arguments which are the subject of current debate, including the work of Bernard Williams and Derek Parfit, and makes new and challenging interpretations of them. This new edition contains additional material assessing the biological approach which has become increasingly popular in recent years, and extends the treatment of indeterminate identity to take account of the epistemic view of vagueness. This book covers the problem of personal identity from its origin in Locke's work to the most recent debates in the philosophical literature, and will be invaluablereading for any student of the topic. (shrink)

This paper proposes a novel conception of mental files, aimed at addressing Frege puzzles. Classical Frege puzzles involve ignorance and discovery of identity. These may be addressed by accounting for a more basic way for identity to figure in thought—the treatment of beliefs by the believer as being about the same thing. This manifests itself in rational inferences that presuppose the identity of what the beliefs are about. Mental files help to provide a functional characterization (...) of a mind capable of this presupposition, but more must be said to show how it may be rational. I argue that this can be done by drawing out the way in which mental files interact with a thinker's motivational states and so come to have normative functional properties. I show how this theory works better than some other treatments of mental files. (shrink)

Frege’s puzzling remarks on the beginning of On Sense and Reference challenge us to explain how true identity sentences of the form a = a can differ in cognitive value from sentences of the form a = b when they are made true by the same object’s self-identity. Some philosophers (e.g. Almog, Glezakos and Paganini) suggest that the puzzle cannot be set up in the context of natural languages since natural sentences, unlike those of regimented formal ones, do (...) not wear their logical properties on their sleeves. In this paper we argue that, on the contrary, there exists a notion of coordination between names which is apt to track the relevant logical properties of natural sentences and therefore to set up the puzzle in natural languages. Frege’s puzzle is here to stay. (shrink)

Traditionally, this puzzle has been solved in various ways. Aristotle, for example, distinguished between “accidental” and “essential” changes. Accidental changes are ones that don't result in a change in an objects' identity after the change, such as when a house is painted, or one's hair turns gray, etc. Aristotle thought of these as changes in the accidental properties of a thing. Essential changes, by contrast, are those which don't preserve the identity of the object when it changes, such (...) as when a house burns to the ground and becomes ashes, or when someone dies. Armed with these distinctions, Aristotle would then say that, in the case of accidental changes, (1) and (2) are both false—a changing thing can really change one of its “accidental properties” and yet literally remain one and the same thing before and after the change. (shrink)

Dion is a human person, Lefty is his left foot, and Theon is Lefty-Complement, a proper part of Dion. Lefty is annihilated and Dion survives left-footless. After Lefty’s annihilation Theon, if he survives, occupies the same region as Dion. I suggest that this scenario be understood as a fusion case in which Dion and Theon, initially overlapping but distinct, are identical after Lefty’s annihilation and propose an account of proper names that allows us to say that Dion and Theon have (...) ‘become identical’ without commitment to occasional identity or other controversial metaphysical doctrines. The proposed solution employs the semantics developed by Wolfgang Schwarz to address the ‘paradox of occasional identity’, posed by puzzle cases of fission, to deal with the problem of Dion and Theon, a body-minus puzzle. (shrink)

In §8 of hisBegriffsschrift(1879), Gottlob Frege discusses issues related to identity. Frege begins his most famous essay,“On Sense and Denotation”(1892),published 13 years later, by criticizing the view advocated in §8. He returns to theseissues in the concluding paragraph. Controversies continue over these importantpassages. We offer an interpretation and discuss some alternatives. We defend thatin theBegriffsschrift,Frege does not hold that identity is a relation between signs.§8 of theBegriffsschriftis motivated by the conflict between two differentcriteria for sameness of conceptual content (...) of sentences. To resolve that conflict,Frege introduces‘≡’in §8 and, thus, circumstances with names as constituents. Tothe same end, in“On Sense and Denotation,”Frege introduces senses andThoughts and abandons both ‘≡’ and circumstances. He solves what we call theCo-instantiation problem, and disregards, but does not solve, the Name problem. (shrink)

Saul Kripke has been a major influence on analytic philosophy and allied fields for a half-century and more. His early masterpiece, Naming and Necessity, reversed the pattern of two centuries of philosophizing about the necessary and the contingent. Although much of his work remains unpublished, several major essays have now appeared in print, most recently in his long-awaited collection Philosophical Troubles. In this book Kripke’s long-time colleague, the logician and philosopher John P. Burgess, offers a thorough and self-contained guide to (...) all of Kripke’s published books and his most important philosophical papers, old and new. It also provides an authoritative but non-technical account of Kripke’s influential contributions to the study of modal logic and logical paradoxes. Although Kripke has been anything but a system-builder, Burgess expertly uncovers the connections between different parts of his oeuvre. Kripke is shown grappling, often in opposition to existing traditions, with mysteries surrounding the nature of necessity, rule-following, and the conscious mind, as well as with intricate and intriguing puzzles about identity, belief and self-reference. Clearly contextualizing the full range of Kripke’s work, Burgess outlines, summarizes and surveys the issues raised by each of the philosopher’s major publications. Kripke will be essential reading for anyone interested in the work of one of analytic philosophy’s greatest living thinkers. (shrink)

It seems plausible that successfully communicating with our peers requires entertaining the same thoughts as they do. We argue that this view is incompatible with other, independently plausible principles of thought individuation. Our argument is based on a puzzle inspired by the Kripkean story of Peter and Paderewski: having developed several variations of the original story, we conclude that understanding and communication cannot be modeled as a process of thought transfer between speaker and hearer. While we are not the first (...) to reach this conclusion, the significance of our argument lies in the fact that it only relies on widely accepted premises, without depending on any especially controversial theory of mental and linguistic content. We conclude by drawing out the implications of that conclusion: if communication and understanding do not require thought identity, then one important motivation for the postulation of inter-personally shared thoughts is undercut. (shrink)

Two thought experiments are provided which elicit whatappear to be opposing judgments about the demands of morality.One Unger-inspired thought experiment suggests that a personmust give up four decades of earnings just to save a singlelife. The other evokes the contrary intuition that onedoesn't have to labor forty years without compensation inorder to prevent the death of an individual. However,considerations of consistency do not demand that weabandon one of our intuitive responses. This is becausethere is a morally significant difference between thetwo (...) burdens that the people suffer in the respectivethought experiments. The difference is a result of humanpsychology being such that it is easier to bear theaftermath of an event that renders one's earlier effortsfutile than it is to suffer identical efforts goingunrewarded in the future. A conclusion that can bedrawn from this temporal asymmetry is that while moralityis not quite as demanding as Unger and many consequentialistsmaintain, it is much more demanding than many of their opponents realize. (shrink)

Beginning from some passages by Vācaspati Miśra and Bhāskararāya Makhin discussing the relationship between a crown and the gold of which it is made, this paper investigates the complex underlying connections among difference, non-difference, coreferentiality, and qualification qua relations. Methodologically, philological care is paired with formal logical analysis on the basis of ‘Navya-Nyāya Formal Language’ premises and an axiomatic set theory-based approach. This study is intended as the first step of a broader investigation dedicated to analysing causation and transformation in (...) non-difference. (shrink)

David Boonin presents a new account of the non-identity problem: a puzzle about our obligations to people who do not yet exist. He provides a critical survey of solutions to the problem that have been proposed, and concludes by developing an unorthodox alternative solution, one that differs fundamentally from virtually every other approach.

Much of the debate about identity in recent decades has been about personal identity, and specifically about personal identity over time, but identity generally, and the identity of things of other kinds, have also attracted attention. Various interrelated problems have been at the centre of discussion, but it is fair to say that recent work has focussed particularly on the following areas: the notion of a criterion of identity; the correct analysis of identity (...) over time, and, in particular, the disagreement between advocates of perdurance and advocates of endurance as analyses of identity over time; the notion of identity across possible worlds and the question of its relevance to the correct analysis of de re modal discourse; the notion of contingent identity; the question of whether the identity relation is, or is similar to, the composition relation; and the notion of vague identity. A radical position, advocated by Peter Geach, is that these debates, as usually conducted, are void for lack of a subject matter: the notion of absolute identity they presuppose has no application; there is only relative identity. Another increasingly popular view is the one advocated by Lewis: although the debates make sense they cannot genuinely be debates about identity, since there are no philosophical problems about identity. Identity is an utterly unproblematic notion. What there are, are genuine problems which can be stated using the language of identity. But since these can be restated without the language of identity they are not problems about identity. (For example, it is a puzzle, an aspect of the so-called “problem of personal identity”, whether the same person can have different bodies at different times. But this is just the puzzle whether a person can have different bodies at different times. So since it can be stated without the language of personal “identity”, it is not a problem about identity, but about personhood.) This article provides an overview of the topics indicated above, some assessment of the debates and suggestions for further reading. (shrink)

Certain belief-ascription statements suggest that people can think about the same object, even if that object doesn't exist. Peter Geach, who in 1967 first discussed these statements, gave them the name of statements of intentional identity. In an especially puzzling form of these statements, a pronoun in one belief clause has its antecedent in another: "Hob believes a witch is F, and Nob believes she is G." In this form, the statements raise three interesting problems. They generate puzzles (...) for a program in philosophy of mind, according to which intentional properties of thought are to be analyzed as theoretical analogs of something independently explicable. They are beyond the scope of standard intensional logic , and therefore jeopardize its explanatory value in certain respects. For instance, they jeopardize the received theory of the de dicto/de re distinction in terms of the scope distinctions of SIL. They pose problems for certain theories of anaphoric pronouns, in the context of SIL. ;At first it seems possible to modify SIL so as to yield a quantificational interpretation of the recalcitrant intentional identity statements. In the modified theory, the statements are analyzed so that a wide-scope quantifier binds variables in separate belief contexts. The problem with such quantificational theories is that they are unable to account for another puzzle about intentional identity. Intentional identity appears not to be a symmetric relation: it can be argued that the inference from "Hob thinks a witch is F and Nob thinks she is G" to "Nob thinks a witch is G and Hob thinks she is F" is not a plausible one. A better formal approach than the quantificational ones contains two key components. The first is a framework for anaphoric pronouns combining certain features of quantificational, discourse referential, and demonstratival interpretations of pronouns. The second is the use of structured domains in the formal models. Various interpretations of the new formalism are possible, each drawing on a different analogical theory of the nature of thoughts and their intentional properties. The new framework explains in a unified fashion not only the apparent asymmetry of intentional identity, but a number of other perplexing features of belief. (shrink)

Dion is a full-bodied man. Theon is that part of him which consists of all of him except his left foot. What becomes of Dion and Theon when Dion’s left foot is amputated? Employing the doctrine of sortal essentialism, I defend a surprising answer last defended by Chrysippus: that Dion survives while the seemingly unscathed Theon perishes. For replies to critics, see my publications of 1997 and (especially) 2003.