It is widely held that counterfactuals, unlike attitude ascriptions, preserve the referential transparency of their constituents, i.e., that counterfactuals validate the substitution of identicals when their constituents do. The only putative counterexamples in the literature come from counterpossibles, i.e., counterfactuals with impossible antecedents. Advocates of counterpossibilism, i.e., the view that counterpossibles are not all vacuous, argue that counterpossibles can generate referential opacity. But in order to explain why most substitution inferences into counterfactuals seem valid, counterpossibilists also often (...) maintain that counterfactuals with possible antecedents are transparency‐preserving. I argue that if counterpossibles can generate opacity, then so can ordinary counterfactuals with possible antecedents. Utilizing an analogy between counterfactuals and attitude ascriptions, I provide a counterpossibilist‐friendly explanation for the apparent validity of substitution inferences into counterfactuals. I conclude by suggesting that the debate over counterpossibles is closely tied to questions concerning the extent to which counterfactuals are more like attitude ascriptions and epistemic operators than previously recognized. (shrink)

According to one prominent strand of mainstream logic and metaphysics, identity is indistinguishability. Priest has recently argued that this permits counterexamples to the transitivity and substitutivity of identity within dialetheic metaphysics, even in paradigmatically extensional contexts. This paper investigates two alternative regimentations of indistinguishability. Although classically equivalent to the standard regimentation on which Priest focuses, these alternatives are strictly stronger than it in dialetheic settings. Both regimentations are transitive, and one satisfies substitutivity. It is argued that both regimentations provide better (...) candidates to occupy the core theoretical role of numerical identity than does the standard regimentation. (shrink)

The paper argues that philosophers commonly misidentify the substitutivity principle involved in Russell’s puzzle about substitutivity in “On Denoting”. This matters because when that principle is properly identified the puzzle becomes considerably sharper and more interesting than it is often taken to be. This article describes both the puzzle itself and Russell's solution to it, which involves resources beyond the theory of descriptions. It then explores the epistemological and metaphysical consequences of that solution. One such consequence, it argues, is that (...) Russell must abandon his commitment to propositions. (shrink)

Competing theories on the semantics of group pejorative terms (also known as‘slurs’)comprise both advocates and opponents to the Identity Thesis (IT), according to whichthese terms and their neutral counterparts do not differ in semantic value. In the oppo-nents’camp, Christopher Hom has offered an argument based on substitution of slurs andneutral counterparts that both supports his semanticist approach and cast doubts on all IT-based approaches to slurs. We aim to point to a dilemma triggered by this argument based on evidence (...) showing that substitution of some words (including but not restricted to slurs)for non-problematically co-referential pairs may fail to preserve truth-values in some linguistics contexts. (shrink)

The Identity of Indiscernibles is the principle that objects cannot differ only numerically. It is widely held that one interpretation of this principle is trivially true: the claim that objects that bear all of the same properties are identical. This triviality ostensibly arises from haecceities (properties like \textit{is identical to a}). I argue that this is not the case; we do not trivialize the Identity of Indiscernibles with haecceities, because it is impossible to express the haecceities of indiscernible objects. I (...) then argue that this inexpressibility generalizes to all of their trivializing properties. Whether the Identity of Indiscernibles is trivially true ultimately turns on whether we can quantify over properties that we cannot express. (shrink)

We show that, contrary to conventional wisdom, Frege’s distinction between sense and reference does not reconcile a classical logic of identity with apparent counterexamples to it involving proper names embedded under propositional attitude verbs.

Trinitarians are charged with at least two contradictions. First, the Father is God and the Son is God, so it seems to follow that the Father is the Son. Trinitarians affirm the premises but deny the conclusion, which seems contradictory. Second, the Father is a God, the Son is a God, and the Holy Spirit is a God, but the Father is not the Son, the Father is not the Holy Spirit, and the Son is not the Holy Spirit. This (...) argument seems to entail that there are three Gods. Again, Trinitarians affirm the premises but deny the conclusion. In this article, I present a novel Trinitarian solution to these alleged contradictions. The solution allows one to maintain that the premises in the above arguments are absolute identity statements, forestalls the need to develop a new way of counting (e.g. by sortals or numerical sameness), and is compatible with divine simplicity. (shrink)

Equality and identity. Bulletin of Symbolic Logic. 19 (2013) 255-6. (Coauthor: Anthony Ramnauth) Also see https://www.academia.edu/s/a6bf02aaab This article uses ‘equals’ [‘is equal to’] and ‘is’ [‘is identical to’, ‘is one and the same as’] as they are used in ordinary exact English. In a logically perfect language the oxymoron ‘the numbers 3 and 2+1 are the same number’ could not be said. Likewise, ‘the number 3 and the number 2+1 are one number’ is just as bad from a logical point (...) of view. In normal English these two sentences are idiomatically taken to express the true proposition that ‘the number 3 is the number 2+1’. Another idiomatic convention that interferes with clarity about equality and identity occurs in discussion of numbers: it is usual to write ‘3 equals 2+1’ when “3 is 2+1” is meant. When ‘3 equals 2+1’ is written there is a suggestion that 3 is not exactly the same number as 2+1 but that they merely have the same value. This becomes clear when we say that two of the sides of a triangle are equal if the two angles they subtend are equal or have the same measure. -/- Acknowledgements: Robert Barnes, Mark Brown, Jack Foran, Ivor Grattan-Guinness, Forest Hansen, David Hitchcock, Spaulding Hoffman, Calvin Jongsma, Justin Legault, Joaquin Miller, Tania Miller, and Wyman Park. -/- ► JOHN CORCORAN AND ANTHONY RAMNAUTH, Equality and identity. Philosophy, University at Buffalo, Buffalo, NY 14260-4150, USA E-mail: [email protected] The two halves of one line are equal but not identical [one and the same]. Otherwise the line would have only one half! Every line equals infinitely many other lines, but no line is [identical to] any other line—taking ‘identical’ strictly here and below. Knowing that two lines equaling a third are equal is useful; the condition “two lines equaling a third” often holds. In fact any two sides of an equilateral triangle is equal to the remaining side! But could knowing that two lines being [identical to] a third are identical be useful? The antecedent condition “two things identical to a third” never holds, nor does the consequent condition “two things being identical”. If two things were identical to a third, they would be the third and thus not be two things but only one. The plural predicate ‘are equal’ as in ‘All diameters of a given circle are equal’ is useful and natural. ‘Are identical’ as in ‘All centers of a given circle are identical’ is awkward or worse; it suggests that a circle has multiple centers. Substituting equals for equals [replacing one of two equals by the other] makes sense. Substituting identicals for identicals is empty—a thing is identical only to itself; substituting one thing for itself leaves that thing alone, does nothing. There are as many types of equality as magnitudes: angles, lines, planes, solids, times, etc. Each admits unit magnitudes. And each such equality analyzes as identity of magnitude: two lines are equal [in length] if the one’s length is identical to the other’s. Tarski [1] hardly mentioned equality-identity distinctions (pp. 54-63). His discussion begins: -/- Among the logical concepts […], the concept of IDENTITY or EQUALITY […] has the greatest importance. -/- Not until page 62 is there an equality-identity distinction. His only “notion of equality”, if such it is, is geometrical congruence—having the same size and shape—an equivalence relation not admitting any unit. Does anyone but Tarski ever say ‘this triangle is equal to that’ to mean that the first is congruent to that? What would motivate him to say such a thing? This lecture treats the history and philosophy of equality-identity distinctions. [1] ALFRED TARSKI, Introduction to Logic, Dover, New York, 1995. [This is expanded from the printed abstract.] . (shrink)

Composition as Identity is the view that an object is identical to its parts taken collectively. I elaborate and defend a theory based on this idea: composition is a kind of identity. Since this claim is best presented within a plural logic, I develop a formal system of plural logic. The principles of this system differ from the standard views on plural logic because one of my central claims is that identity is a relation which comes in a variety of (...) forms and only one of them obeys substitution unrestrictedly. I justify this departure from orthodoxy by showing some problems which result from attempts to avoid inconsistencies within plural logic by means of postulating other non-singular terms besides plural terms. Thereby, some of the main criticisms raised against Composition as Identity can be addressed. Further, I argue that the way objects are arranged is relevant with respect to the question which object they compose, i.e. to which object they are identical to. This helps to meet a second group of arguments against Composition as Identity. These arguments aim to show that identifying composite objects on the basis of the identity of their parts entails, contrary to our common sense view, that rearranging the parts of a composite object does not leave us with a different object. Moreover, it allows us to carve out the intensional aspects of Composition as Identity and to defend mereological universalism, the claim that any objects compose some object. Much of the pressure put on the latter view can be avoided by distinguishing the question whether some objects compose an object from the question what object they compose. Eventually, I conclude that Composition as Identity is a coherent and plausible position, as long as we take identity to be a more complex relation than commonly assumed. (shrink)

Property-identical divine-command theory (PDCT) is the view that being obligatory is identical to being commanded by God in just the way that being water is identical to being H2O. If these identity statements are true, then they express necessary a posteriori truths. PDCT has been defended in Robert M. Adams (1987) and William Alston (1990). More recently Mark C. Murphy (2002) has argued that property-identical divine-command theory is inconsistent with two well-known and well-received theses: the free-command thesis and the supervenience (...) thesis. I show that Murphy's argument is vitiated by mistaken assumptions about the substitutivity of metaphysical identicals in contexts of supervenience. The free-command thesis and the supervenience thesis therefore pose no serious threat to PDCT. (Published Online August 11 2004). (shrink)

Like '&', '=' is no term; it represents no extrasentential property. It marks an atomic, nonpredicative, declarative structure, sentences true solely by codesignation. Identity (its necessity and total reflexivity, its substitution rule, its metaphysical vacuity) is the objectual face of codesignation. The syntax demands pure reference, without predicative import for the asserted fact. 'Twain is Clemens' is about Twain, but nothing is predicated of him. Its informational value is in its 'metailed' semantic content: the fact of codesignation (that 'Twain' (...) names Clemens) that explains what fact it asserts and why it is necessary. Critiques of concepts of rigidity and elimination of singular terms result. (shrink)

In this study, I aimed to subject to philosophical analysis the scientific data from biological science researches that are conducted into the phenomenon of homosexuality in order to give philosophical interpretation to it thereby establishing the normative values of the scientific findings. From the study, I observed that much of the scientific data on homosexuality established the phenomenon as ingrained in the human biological construct. I argued that although homoeroticism is biological construct of the homosexual, parenting plays significant role in (...) the sexual identity ultimately developed by an individual. I have presented three conceptual frameworks to show how this happens. I determined that homoeroticism and homosexuality are not exactly the same thing; homoeroticism is a biological construct, while homosexuality is a social construct. I also determine that sexual orientation (which results from eros) is not necessarily the same thing as sexual identity (such as homosexuality or heterosexuality, which results from socialization processes). I argued that sexuality is a synthesis of dialectical interactions between the factors internal within and external to the homosexual’s body; but that the external is conditioned by the internal. I adopted the paradigm of existentialism as the philosophical framework for the analysis. In conclusion, I argued that if the homosexual’s sexual orientation is native biological construct of his/her body, then the homosexual has no control over his/her sexual orientation. The philosophical implication of that finding is that homoeroticism is facticity; and as facticity the homosexual cannot escape from being homosexual. Despite this, I used the Two-Way Test (TWT) to show that homosexuality is immoral act; although the homosexual is not an immoral person. However, I have demonstrated that the failed moral status of homosexuality is not enough ground to criminalize homosexuality. (shrink)

Citizenship is the cornerstone of a democratic polity. It has three dimensions: legal, civic and affiliative. Citizens constitute the polity's demos, which often coincides with a nation. European Union (EU) citizenship was introduced to enhance ‘European identity’ (Europeans’ sense of belonging to their political community). Yet such citizenship faces at least two problems. First: Is there a European demos? If so, what is the status of peoples (nations, demoi) in the Member States? The original European project aimed at ‘an ever (...) closer union among the peoples of Europe.’ Second: Citizens are members of a political community; to what kind of polity do EU citizens belong? Does the EU substitute Member States, assume them or coexist alongside them? After an analytical exposition of the demos and telos problems, I will argue for a normative self‐understanding of the EU polity and citizenship, neither in national nor in federal but in analogical terms. (shrink)

I provide a theory of the metaphysical foundations of identity: an account what grounds facts of the form a=b. In particular, I defend the claim that indiscernibility grounds identity. This is typically rejected because it is viciously circular; plausible assumptions about the logic of ground entail that the fact that a=b partially grounds itself. The theory I defend is immune to this circularity.

In this admirable book, Scott Soames provides well defended answers to some of the most difficult and important questions in the philosophy of language, and he does so with characteristic thoroughness, clarity, and rigor. The book's title is appropriate, since it does indeed go ‘beyond rigidity’ in many ways. Among other things, Soames does the following in the course of the book. He persuasively argues that the main thesis of Kripke's Naming and Necessity—that ordinary names are rigid designators—can be extended (...) to the more general thesis that simple proper names are synonymous with neither nonrigid nor rigidified descriptions, and so have no descriptive content whatever. He thoroughly defends and places in the context of a larger semantic theory the Millian thesis that the sole semantic contents of most proper names are the names' referents, so that sentences containing such names semantically express singular Russellian propositions. He provides and defends at length an innovative pragmatic account of why substitution of co-referring proper names in cognitive contexts intuitively fails to be truth preserving, even though it seems to follow from the Millian thesis that such substitution must be semantically valid. And he thoroughly and persuasively defends a semantic theory of natural kind terms that explains how, following Kripke and Putnam, theoretical identities involving such terms can express a posteriori necessities, even though on Soames's theory, and contrary to the Kripke-Putnam view, such terms are neither names of natural kinds nor rigid designators in any interesting sense. (shrink)

One of the issues that has been hotly discussed in connection with the direct designation theory is whether or not coreferential names can be substituted salva veritate in epistemic contexts. Some direct designation theorists believe that they can be so substituted. Some direct designation theorists and all Fregeans and neo-Fregeans believe that they cannot be so substituted. Fregeans of various stripes have used their intuition against free substitution to argue against the direct designation theory. Some direct designation theorists have (...) used the same intuitions to argue against the view that belief reports of simple declarative sentences can be accounted for with singular propositions. This paper has two main goals; first, to show that the discussion of the issue has tended to treat all epistemic contexts equally, and second, to argue that we should not treat substitutions in contexts that involve justification (and hence knowledge) in the same way as we treat substitution in simple belief contexts, i.e., contexts that just involve the belief relation. (shrink)

Many philosophers believe that the criteria of identity over time for ordinary objects entail that such objects are permanent members of certain sortal kinds. The sortal kinds in question have come to be known as substance sortal kinds. But in this article, I defend a criterion of identity that is suited to phasalism, the view that alleged substance sortals are in fact phase sortals. The criterion I defend is a sortal‐weighted version of a change‐minimizing criterion first discussed by Eli Hirsch. (...) I present this criterion and then argue that it withstands attempts to show that it is inferior to non‐phasalist rivals. (shrink)

Auditory perception is traditionally conceived as the perception of sounds — a friend’s voice, a clap of thunder, a minor chord. However, daily life also seems to present us with experiences characterized by the absence of sound — a moment of silence, a gap between thunderclaps, the hush after a musical performance. In these cases, do we positively hear silence? Or do we just fail to hear, and merely judge or infer that it is silent? This longstanding question remains controversial (...) in both the philosophy and science of perception, with prominent theories holding that sounds are the only objects of auditory experience and thus that our encounter with silence is cognitive, not perceptual. However, this debate has largely remained theoretical, without a key empirical test. Here, we introduce a novel empirical approach, presenting experimental evidence that silence can be genuinely perceived (not just cognitively inferred). We ask whether silences can ‘substitute’ for sounds in event-based auditory illusions — empirical signatures of auditory event representation in which auditory events distort perceived duration. Seven experiments introduce three new ‘silence illusions’ — the one-silence-is-more illusion, silence-based warping, and the oddball-silence illusion — each adapted from a prominent perceptual illusion previously thought to arise only from sounds. Subjects were immersed in ambient noise interrupted by silences structurally identical to the sounds in the original illusions. In all cases, silences elicited temporal distortions perfectly analogous to the illusions produced by sounds. Our results suggest that silence is truly heard, not merely inferred, introducing a general approach for studying absence perception. (shrink)

Patient and public involvement is widely thought to be important in the improvement of health care delivery and in health equity. Purpose: The article examines the role of experiential knowledge in service co-production in order to develop opiate substitution treatment services (OST) for high-risk opioid users. Method: Drawing on social representations theory and the concept of social identity, we explore how experts’ by experience and registered nurses’ understandings of OST contain discourses about the social representations, identity, and citizenship of (...) the participants and the effects these may have on developing or hindering inclusive and bottom-up forms of patient and public involvement. Results: The meeting sessions that potentially offer room for creativity and problem-solving fail to provide any new propositions for fixing the system. The health care professionals primarily identify themselves as regulators who protect the correctness of their actions and show little interest in considering experiential knowledge on opioid addiction. Conclusion: The participation of patients has been one of the prominent reforms implemented in health care. The goal of client-centered thinking is often emphasised; however, the implementation is not simple due to the strongly institutionalised knowledge and related working patterns and practices in health care. (shrink)

I explain why model theory is unsatisfactory as a semantic theory and has drawbacks as a tool for proofs on logic systems. I then motivate and develop an alternative, the truth-valuational substitutional approach (TVS), and prove with it the soundness and completeness of the first order Predicate Calculus with identity and of Modal Propositional Calculus. Modal logic is developed without recourse to possible worlds. Along the way I answer a variety of difficulties that have been raised against TVS and show (...) that, as applied to several central questions, model-theoretic semantics can be considered TVS in disguise. The conclusion is that the truth-valuational substitutional approach is an adequate tool for many of our logic inquiries, conceptually preferable over model-theoretic semantics. Another conclusion is that formal logic is independent of semantics, apart from its use of the notion of truth, but that even with respect to it its assumptions are minimal. (shrink)

In his paper “Flaws of Formal Relationism”, Mahrad Almotahari argues against the sort of response to Frege's Puzzle I have defended elsewhere, which he dubs ‘Formal Relationism’. Almotahari argues that, because of its specifically formal character, this view is vulnerable to objections that cannot be raised against the otherwise similar Semantic Relationism due to Kit Fine. I argue in response that Formal Relationism has neither of the flaws Almotahari claims to identify.

I critically discuss both the particular doctrinal and general meta-philosophical or methodological tenets of Mark Johnston's paper "Human Beings", attending to several weaknesses in his argument. One of the most important amongst them is an apparent reliance on a substitution of identicals within an intensional context as he argues that continuity of functioning brain is essential to the persistence of "Human Beings" as allegedly singled out by his methodology; another equally important is a simple lacuna in place of (...) an argument that candidate entities for re-identification by means we take for granted in the case of persons cannot be what I call "mentalistically" individuated. (shrink)

Gödel’s slingshot-argument proceeds from a referential theory of definite descriptions and from the principle of compositionality for reference. It outlines a metasemantic proof of Frege’s thesis that all true sentences refer to the same object—as well as all false ones. Whereas Frege drew from this the conclusion that sentences refer to truth-values, Gödel rejected a referential theory of definite descriptions. By formalising Gödel’s argument, it is possible to reconstruct all premises that are needed for the derivation of Frege’s thesis. For (...) this purpose, a reference-theoretical semantics for a language of first-order predicate logic with identity and referentially treated definite descriptions will be defined. Some of the premises of Gödel’s argument will be proven by such a reference-theoretical semantics, whereas others can only be postulated. For example, the principle that logically equivalent sentences refer to the same object cannot be proven but must be assumed in order to derive Frege’s thesis. However, different true (or false) sentences can refer to different states of affairs if the latter principle is rejected and the other two premises are maintained. This is shown using an identity criterion for states of affairs according to which two states of affairs are identical if and only if they involve the same objects and have the same necessary and sufficient condition for obtaining. (shrink)

In The Philosophy of Logical Atomism Russell held the view that facts in the world are formally structured complexes, the structure of which matches the logical structure of correspondent propositions. Russell also seems to have denied that there are facts of identity and of diversity. This paper argues that Identity and Diversity can be understood as purely formal structures in Russellian facts. It considers Russell’s possible reasons for denying the existence of facts of identity and diversity and shows how problematic (...) these reasons are. In particular, I argue that identity statements are not tautologies, and their denial does not result into a contradiction. An important consequence of this thesis is that Metaphysics and Logic are not as tied up as Russell took them to be, but nevertheless these are good news for the old formal program for Metaphysics that lies at the very heart of what he called philosophical logic. (shrink)

I show that intuitive and logical considerations do not justify introducing Leibniz’s Law of the Indiscernibility of Identicals in more than a limited form, as applying to atomic formulas. Once this is accepted, it follows that Leibniz’s Law generalises to all formulas of the first-order Predicate Calculus but not to modal formulas. Among other things, identity turns out to be logically contingent.

Composition as identity, as I understand it, is a theory of the composite structure of reality. The theory’s underlying logic is irreducibly plural; its fundamental primitive is a generalized identity relation that takes either plural or singular arguments. Strong versions of the theory that incorporate a generalized version of the indiscernibility of identicals are incompatible with the framework of plural logic, and should be rejected. Weak versions of the theory that are based on the idea that composition is merely (...) analogous to identity are too weak to be interesting, lacking in metaphysical consequence. I defend a moderate version according to which composition is a kind of identity, and argue that the difference is metaphysically substantial, not merely terminological. I then consider whether the notion of generalized identity, though fundamental, can be elucidated in modal terms by reverse engineering Hume’s Dictum. Unfortunately, for realists about possible worlds, such as myself,... (shrink)

Compartmentalizing our distinct personal identities is increasingly difficult in big data reality. Pictures of the person we were on past vacations resurface in employers’ Google searches; LinkedIn which exhibits our income level is increasingly used as a dating web site. Whether on vacation, at work, or seeking romance, our digital selves stream together. One result is that a perennial ethical question about personal identity has spilled out of philosophy departments and into the real world. Ought we possess one, unified identity (...) that coherently integrates the various aspects of our lives, or, incarnate deeply distinct selves suited to different occasions and contexts? At bottom, are we one, or many? The question is not only palpable today, but also urgent because if a decision is not made by us, the forces of big data and surveillance capitalism will make it for us by compelling unity. Speaking in favor of the big data tendency, Facebook’s Mark Zuckerberg promotes the ethics of an integrated identity, a single version of selfhood maintained across diverse contexts and human relationships. This essay goes in the other direction by sketching two ethical frameworks arranged to defend our compartmentalized identities, which amounts to promoting the dis-integration of our selves. One framework connects with natural law, the other with language, and both aim to create a sense of selfhood that breaks away from its own past, and from the unifying powers of big data technology. (shrink)

According to Facebook’s Mark Zuckerberg, big data reality means, “The days of having a different image for your co-workers and for others are coming to an end, which is good because having multiple identities represents a lack of integrity.” Two sets of questions follow. One centers on technology and asks how big data mechanisms collapse our various selves (work-self, family-self, romantic-self) into one personality. The second question set shifts from technology to ethics by asking whether we want the kind of (...) integrity that Zuckerberg lauds, and that big data technology enables. The negative response is explored by sketching three ethical conceptions of selfhood that recommend personal identity be understood as dis-integrating. The success of the strategies partially depends upon an undermining use of big data platforms. (shrink)

This paper focuses on Levinas’ concept of ipseity and on its change between the 1960’s and the 1970’s, arguing that this change implies the undoing of the subject. In Totality and Infinity (1961), ipseity is considered as the deep core of the I, whereas, in Otherwise Than Being (1974), it is the other person inside the self. Levinas also theorizes another kind of other-in-the-same, which is illeity, the trace of God inside the human soul. It is shown that illeity is (...) not problematic for the subject, since it does not cause its undoing. Furthermore, it is argued that ipseity, in Otherwise Than Being, is not a mere opening to alterity, but a source of alienation. Finally, it is shown that Levinas starts to change his mind on ipseity in 1968 (“Substitution”), however this modification becomes clear only in 1970 (“No Identity”). (shrink)

In the chapter “Emancipatory Engagement with Oppression: The Perils of Identity in Feminist and Anti-Racist Politics” Oda Davanger argues against basing emancipatory struggles on identity categories. According to Davanger, conceptualizing oppression in terms of different axes, i.e. identity categories, can be harmful to feminist philosophy and ideology since it contri- butes to upholding whiteness and maleness as norms and there- fore fails to “dismantle the system of domination”. In opposition to different versions of identity politics and the analytical and political (...) concept of intersectionality, Davanger complements bell hooks’ notion of imperialist white supremacist capitalist patriarchy with a post-structuralist perspective. Davanger’s answer to feminist and anti-racist struggles based on identity categories is a politics that is built around an “abstract and alienated desire” that makes possible engaging in the struggle for a world without oppression based on identity, regardless of individuals’ own experience of oppression. (shrink)

Burgess (1997), building on Quine (1953), convincingly argued that claims in quantified modal logic cannot be understood as synonymous with or logically equivalent to claims about the analyticity of certain sentences. According to modal normativism, metaphysically necessary claims instead express or convey our actual semantic rules. In this paper, I show how the normativist can use Sidelle’s (1992a, 1995) neglected work on rigidity to account for two important phenomena in quantified modal logic: the necessity of identity and the substitutivity of (...) identicals into modal contexts. (shrink)

This article discusses Heidegger’s interpretation of Parmenides given in his last public lecture ‘The Principle of Identity’ in 1957. The aim of the piece is to illustrate just how original and significant Heidegger’s reading of Parmenides and the principle of identity is, within the history of Philosophy. Thus the article will examine the traditional metaphysical interpretation of Parmenides and consider G.W.F. Hegel and William James’ account of the principle of identity in light of this. It will then consider Heidegger’s contribution, (...) his return to and re-interpretation of Parmenides in his last lecture. Heidegger will, through the Parmenidean claim that ‘Thinking and Being are one’ deconstruct the traditional metaphysical understanding of the principle of identity, and in its place offer a radically different conception of how our relationship, our ‘belonging together’ with Being can be understood. (shrink)

The aim of this chapter is to explore to some extent the relationship between identity and necessity in logic and metaphysics. First, I provide a historically-based summary of proofs of the necessity of identity, highlighting the importance of the role that self-identity plays. Second, I introduce two examples of metaphysical topics where the necessity of identity has played a pivotal role: the necessary a posteriori, and the coincidence of material objects. I argue that important aspects of these debates rest on (...) how we represent identity. Third, I consider some recent work on generalized identity. This opens up new prospects for explaining why identity is necessary. (shrink)

The purpose of this note is to present a strong form of the liar paradox. It is strong because the logical resources needed to generate the paradox are weak, in each of two senses. First, few expressive resources required: conjunction, negation, and identity. In particular, this form of the liar does not need to make any use of the conditional. Second, few inferential resources are required. These are: (i) conjunction introduction; (ii) substitution of identicals; and (iii) the inference: (...) From ¬(p ∧ p), infer ¬ p. It is, interestingly enough, also essential to the argument that the ‘strong’ form of the diagonal lemma be used: the one that delivers a term λ such that we can prove: λ = ¬ T(⌈λ⌉); rather than just a sentence Λ for which we can prove: Λ ≡ ¬T(⌈Λ⌉). The truth-theoretic principles used to generate the paradox are these: ¬(S ∧ T(⌈¬S⌉); and ¬(¬S ∧ ¬T(⌈¬S⌉). These are classically equivalent to the two directions of the T-scheme, but they are intuitively weaker. The lesson I would like to draw is: There can be no consistent solution to the Liar paradox that does not involve abandoning truth-theoretic principles that should be every bit as dear to our hearts as the T-scheme. So we shall have to learn to live with the Liar, one way or another. (shrink)

If two theory formulations are merely different expressions of the same theory, then any problem of choosing between them cannot be due to the underdetermination of theories by data. So one might suspect that we need to be able to tell distinct theories from mere alternate formulations before we can say anything substantive about underdetermination, that we need to solve the problem of identical rivals before addressing the problem of underdetermination. Here I consider two possible solutions: Quine proposes that we (...) call two theories identical if they are equivalent under a reconstrual of predicates, but this would mishandle important cases. Another proposal is to defer to the particular judgements of actual scientists. Consideration of an historical episodethe alleged equivalence of wave and matrix mechanicsshows that this second proposal also fails. Nevertheless, I suggest, the original suspicion is wrong; there are ways to enquire into underdetermination without having solved the problem of identical rivals. (shrink)

Disciplinary issues -- Field studies -- Appendix: Theory of law : legal ethnography, or, the theoretical fruits of the inquiries into folkways. /// Reedition of papers in English spanning from 1995 to 2008 /// DISCIPLINARY ISSUES -- LAW AS CULTURE? [2002] 9–14 // TRENDS IN COMPARATIVE LEGAL STUDIES [2002] 15–17 // COMPARATIVE LEGAL CULTURES: ATTEMPTS AT CONCEPTUALISATION [1997] 19–28: 1. Legal Culture in a Cultural-anthropological Approach 19 / 2. Legal Culture in a Sociological Approach 21 / 3. Timely Issues of (...) Central and Eastern Europe 24 // COMPARATIVE LEGAL CULTURES? [2001] 29–48: 1. Legal Comparativism Challenged 29 / 2. Comparative Legal Cultures versus Comparative Law 34 / 3. Contrasting Fields 40 [a) The Historical Understanding of Socialist Law 42 / b) Convergence of Civil Law and Common Law 44] 4. Concluding Remarks 46 // THEATRUM LEGALE MUNDI: ON LEGAL SYSTEMS CLASSIFIED [2005] 49–75: 1. Preliminaries 49 / 2. Proposals 50 / 3. Impossible Taxonomy, or the Moment of Practicality in Legal Mapping 69 / 4. Diversity as a Fundamental Quality of Human Existence 74 // LEGAL TRADITIONS? IN SEARCH FOR FAMILIES AND CULTURES IN LAW [2004] 77–97: 1. Comparative Law and the Comparative Study of Legal Traditions 78 / 2. ‘System’, ‘Family’, ‘Culture’, and ‘Tradition’ in the Classification of Law 80 / 3. Different Traditions, Differing Ways of Thinking 85 / 4. Different Expectations, Differings Institutionalisations in Law 88 / 5. Different “Rationalities”, Differing “Logics” 92 / 6. Mentality in Foundation of the Law 94 / 7. Defining a Subject for Theoretical Research in Law 96 // SOMETHING NEW, SOMETHING OLD IN THE EUROPEAN IDENTITY OF LAW? [1995] 99–102 --- FIELD STUDIES -- MEETING POINTS BETWEEN THE TRADITIONS OF ENGLISH–AMERICAN COMMON LAW AND CONTINENTAL-FRENCH CIVIL LAW: DEVELOPMENTS AND EXPERIENCE OF POSTMODERNITY IN CANADA [2002] 105–130: I. Canadian Law in General 105 / II. Canadian Legal Developments in Particular [1. The Transformation of the Role of Precedents 112 / 2. The Transformation of Law-application into a Collective, Multicultural and Multifactorial Search for a Solution 116 / 3. Practical Trends of Dissolving the Law’s Positivity 120 / 4. New Prerogatives Acquired by Courts 125 {a) Unfolding the Statutory Provisons in Principles 126 / b) Constitutionalisation of Issues 127 / c) The Supreme Court as the Nation’s Supreme Moral Authority 129}] // MAN ELEVATING HIMSELF? DILEMMAS OF RATIONALITY IN OUR AGE [2000] 131–163: I. Reason and its Adventures 1. Progress and Advance Questioned 131 / 2. The Human Search for Safety Objectified 133 / 3. Knowledge Separated from Wisdom 135 / 4. Pure Intellectuality thereby Born 137 / II. The Will-Element Formalised in Law 5. Mere Voluntas in the Foundation of Legal Positivism 141 / 6. Formalism with Operations Fragmented 145 / III. The State of America Exemplified 7. “Slouching into Gomorrah” 147 / IV. Consequences 8. Utopianism-cum-Voluntarism 154 / 9. With Logic in Posterior Control of Human Formulations Only 159 / V. Perspectives 10. And a Final Resolution Dreamed about 161 // RULE OF LAW? MANIA OF LAW? ON THE BOUNDARY BETWEEN RATIONALITY AND ANARCHY IN AMERICA [2002] 165–180: {Transformation of American Law and Legal Mentality 165 / With Repercussions on the Underlying Ethos 168 / Legislation through Processualisation 170 / With Hyperrationalism Added 172 / Example: Finding Lost Property 172 / Practicalness Veiled by Verbal Magic 173 / Ending in Jurispathy 175 / Transubstantiating the Self-interest of the Legal Profession 178 / Post-modernity, Substituting for Primitiveness 178} // TRANSFERS OF LAW: A CONCEPTUAL ANALYSIS [2003] 181–207: 1. Terms 182 / 2. Technicality 190 / 3. Contrasts in Transfers of Law 200 {Contrasts 200 / Criticisms 202 / Alternatives205} 4. Conclusions 206 // THE DANGERS FOR THE SELF OF BEING SELF-CENTRED: ON STANDARDS AND VALUES [2002] 209–212 --- APPENDIX -- THEORY OF LAW – LEGAL ETHNOGRAPHY, OR THE THEORETICAL FRUITS OF THE INQUIRIES INTO FOLKWAYS [2008] 213–234 1. Encounters 213 / 2. Disciplines 218 / 3. The Lawyerly Interest 223 / 4. Law and/or Laws 226 / 5. Conclusion 233 --- Index of Subjects 235 / Index of Normative Materials 242 / Index 244 . (shrink)

There are well-known quasi-formal arguments that identity is a "strict" relation in at least the following three senses: (1) There is a single identity relation and a single distinctness relation; (2) There are no contingent cases of identity or distinctness; and (3) There are no vague or indeterminate cases of identity or distinctness. However, the situation is less clear cut than it at first may appear. There is a natural formal theory of identity that is very close to the standard (...) classical theory but which does not validate the formal analogues of (1)-(3). The core idea is simple: We weaken the Principle of the Indiscernibility of Identicals from a conditional to an entailment and we adopt a weakly classical logic. This paper investigates this weakly classical theory of identity (and related theories) and discusses its philosophical ramifications. It argues that we can accept a reasonable theory of identity without committing ourselves to the uniqueness, necessity, or determinacy of identity. (shrink)

It is tempting to think that in the case of complete spatio-temporal coincidence, the statue is identical with the constituent lump of clay. However, some philosophers have thought that accepting constitution as identity in this type of case forces one to reject the necessity of identity. I show that there is no conflict here. By distinguishing between an object's being necessarily an F and an object's being necessity identical with an F, we can see that accepting the necessity of identity (...) does not, and should not, compel one to reject constitution as identity. (shrink)

his paper is an excerpt from a larger project that aims to open a new pathway into Spinoza's Ethics by formally reconstructing an initial fragment of this text. The semantic backbone of the project is a custom-made Spinozian model theory that lays out some of the formal prerequisites for more ne-grained investigations into Spinoza's fundamental ontology and modal metaphysics. We implement Spinoza's theory of attributes using many-sorted models with a rich system of identity that allows us to clarify the puzzling (...) status of such logical principles as the Substitution of Identicals and Transitivity of Identity in Spinoza's thought. The intensional structure of our Spinozian models also captures his proposal that states of a airs can be necessitated or excluded by the essences of particular things, an essence-relative modality that should be of interest to philosophers who have sought to rehabilitate the concept of essence in contemporary analytic metaphysics. (shrink)

The subject of this paper is the epistemology of identity: a general theory of knowledge, evidence and justification for the claim that one thing is identical to another. Although identity figures significantly in our epistemic lives, this is a topic that, to the best of my knowledge, has gone entirely unexplored. Initial attempts to integrate such an epistemology into existing theories of evidence---many of which are tailor-made for contingent propositions---are confounded by the necessity of identity. I defend a restricted form (...) of skepticism according to which the only knowable identity claims are trivial. (shrink)

A long-running dispute concerns which adaptation-related explananda natural selection can be said to explain. At issue are explananda of the form: why a given individual organism has a given adaptation rather than that same individual having another trait. It is broadly agreed that one must be ready to back up a “no” answer with an appropriate theory of trans-world identity for individuals. I argue, against the conventional wisdom, that the same is true for a “yes” answer. My conclusion recasts the (...) landscape and opens the door to a potential resolution. (shrink)

I argue via examples that there are cases in which things that are not two distinct things qualitatively differ without contradiction. In other words, there are cases in which something differs from itself. Standard responses to such cases are to divide the thing into distinct parts, or to conceive of the thing under different descriptions, or to appeal to different times, or to deny that the property had is the property lacked. I show these responses to be unsatisfactory. I then (...) gather and systematize available ways of talking about such cases with phrases like ‘insofar as’, ‘qua’, ‘to the extent that’, ‘in some respect’, etc., while paying special attention to the scope of ‘not’ when used with these phrases. This allows me to show how we can speak of self-differing without contradiction. (shrink)

In a recent article, Harold Noonan argues that application conditions and criteria of identity are not distinct from one another. This seems to threaten the standard approach to distinguishing sortals from adjectival terms. I propose that his observation, while correct, does not have this consequence. I present a simple scheme for distinguishing sortals from adjectival terms. I also propose an amended version of the standard canonical form of criteria of identity.

The mask's role is central to the superhero narrative. The mask is a non-human identity, which replaces the civilian, human one; sometimes forever. It is what happens to the majority of Gotham's villains. While Batman can take off his mask and at least pretend to be Bruce Wayne, many of his enemies do not have the same privilege. For characters like Two-Face, Joker, Zsasz, and Clayface, the mask is carved directly into their bodies. Like masks, scars can replace one's identity, (...) but deeply and sometimes irreversibly. Bodies and masks play a central role in ancient primitive cultures, especially during initiation rituals. The two elements are distinct, but closely linked. Wearing a mask always implies a modification of the body, or at least of the way it is perceived. Furthermore, marks left on the body, whether temporary like a face paint or definitive like a tattoo, perform a similar function to that of the mask: they replace the individual's identity and communicate a message. The initiation ceremonies destroy a previous identity to create a new one. While an individuum is a Leib, a living body that is becoming and escapes an ultimate meaning, by inflicting pain and scars, the initiation rituals aim to reduce the body to a stable dimension. First an ecstasy, induced by drugs and fasting, and through the infliction of physical pain, shatters the previous identity. The Leib is reduced to the passivity of flesh. Then a new identity is literally written on the body through scars or tattoos, thus receiving an "ultimate" sense and giving him/her a role and a place within society. The scar is a new identity, like a mask carved directly on the body. (shrink)

In this article I present some characteristics of logics and semantics of an uncertain world. I confront two-valued and fuzzy logic. I use Kafka’s novel Process as an example, which is designed as an uncertain context with words which are rigid designators without rigid meaning. That produces an uncertain world of logical and semantical relations. In presentation of problems I introduce basic concepts of Frege’s, Wittgenstein’s, Tarsky’s, Searle’s, Quine’s and Davidson’s philosophy of language. I differ the logical and semantical identification (...) of identity. I differ reference and inference, or representation and identification as two components which are fundamental for the identification of identity. I found this difference on the role of logical unification and granulation of predicates in the structure of thought and semantical unification and granulation of attributes in the structure of statements and their relation to ontology of context. Through the confrontation of the logical and semantical unification and granulation I find that the limits of logic are not also the limits of language. The semantical unification goes over the highest genre and below the lowest species. That enables the extra-logical, non-scientifical, con-fessional, pro-phetical, artistic, and ordinary use of language. (shrink)

In this dissertation I examine the ontological and systematic basis of Hegel’s social and political philosophy. I argue that the structures of the will, discussed in paragraphs five through seven of the Philosophy of Right, present the key for understanding the goal and the argumentative structure of that work. Hegel characterizes the will in terms of the oppositions between the universal and the particular, the infinite and the finite, and the indeterminate and the determinate. Ultimately, he argues that we must (...) grasp the will as the unity of these oppositional moments. The Philosophy of Right presents an extended attempt to grasp this unity. -/- In order to central problem presented by the structure of the will, I argue that we must first recognize the will as the highest instantiation of the more general structures that constitute the notion. On my interpretation, the term ‘notion’ designates Hegel’s doctrine of substance. More specifically, this term presents his conception of substance in terms of categories normally associated with human subjectivity, in terms of representation and purposive action. -/- The will presents the highest or truest instantiation of the notion. Various notions can be ranked along a spectrum in accordance with their degree of success at resolving the basic problem facing all objects – namely the problem of integrating or essentially relating identity and difference through self-constituting activity. The unification of identity and difference presents the central problem or paradox of Hegel’s philosophy. It is a paradox that takes many forms. In this dissertation, I show how change, the structure of judgment, and the nature of the object all exhibit this paradox. I also show how Hegel’s doctrine of the notion develops as a direct response to this paradox. Additionally, I argue that Hegel’s account of the structure of the will – as the unity of the universal and the particular, the unity of the infinite and the finite, and the unity of the indeterminate and the determinate – presents the highest manifestation of the paradox that arises when we seek to explain the unity of identity and difference. (shrink)

This paper offers a critical assessment of the current state of the debate about the identity and individuality of material objects. Its main aim, in particular, is to show that, in a sense to be carefully specified, the opposition between the Leibnizian ‘reductionist’ tradition, based on discernibility, and the sort of ‘primitivism’ that denies that facts of identity and individuality must be analysable has become outdated. In particular, it is argued that—contrary to a widespread consensus—‘naturalised’ metaphysics supports both the acceptability (...) of non-qualitatively grounded (both ‘contextual’ and intrinsic) identity and a pluralistic approach to individuality and individuation. A case study is offered that focuses on non-relativistic quantum mechanics, in the context of which primitivism about identity and individuality, rather than being regarded as unscientific, is on the contrary suggested to be preferable to the complicated forms of reductionism that have recently been proposed. More generally, by assuming a plausible form of anti-reductionism about scientific theories and domains, it is claimed that science can be regarded as compatible with, or even as suggesting, the existence of a series of equally plausible grades of individuality. The kind of individuality that prevails in a certain context and at a given level can be ascertained only on the basis of the specific scientific theory at hand. (shrink)

Humans have long wondered whether they can survive the death of their physical bodies. Some people now look to technology as a means by which this might occur, using terms such 'whole brain emulation', 'mind uploading', and 'substrate independent minds' to describe a set of hypothetical procedures for transferring or emulating the functioning of a human mind on a synthetic substrate. There has been much debate about the philosophical implications of such procedures for personal survival. Most participants to that debate (...) assume that the continuation of identity is an objective fact that can be revealed by scientific enquiry or rational debate. We bring into this debate a perspective that has so far been neglected: that personal identities are in large part social constructs. Consequently, to enable a particular identity to survive the transference process, it is not sufficient to settle age-old philosophical questions about the nature of identity. It is also necessary to maintain certain networks of interaction between the synthetic person and its social environment, and sustain a collective belief in the persistence of identity. We defend this position by using the example of the Dalai Lama in Tibetan Buddhist tradition and identify technological procedures that could increase the credibility of personal continuity between biological and artificial substrates. (shrink)

Philosophers disagree whether composition as identity entails mereological universalism. Bricker :264–294, 2016) has recently considered an argument which concludes that composition as identity supports universalism. The key step in this argument is the thesis that any objects are identical to some object, which Bricker justifies with the principle of the universality of identity. I will spell out this principle in more detail and argue that it has an unexpected consequence. If the universality of identity holds, then composition as identity not (...) only leads us to universalism, but also leads to the view that there are no mereological atoms. (shrink)

This essay presents a novel physicalist perspective on the fluidity of identity for concrete and abstract objects. The comprehensive definition of identity that is adopted considers an object's physical properties, location, and relationships to other things or events. The argument is developed through three premises: that the law of identity does not hold for concrete objects, that abstract objects depend on physical substrates and are thus in flux, and that even objects fixed in space and time may not have a (...) fixed identity. The conclusion is that the law of identity does not universally hold for tangible things, so-called abstract things; and finally, objects in a unique spatiotemporal location. The essay contributes to the ongoing philosophical discourse on identity and encourages readers to question traditional understandings of the law of identity. The implications of this argument extend beyond philosophy to fields such as biology, chemistry, and computer science, where a sound understanding of identity is critical. (shrink)