The deontic modal must has two surprising properties: an assertion of must p does not permit a denial of p, and must does not take past tense complements. I first consider an explanation of these phenomena that stays within Angelika Kratzer’s semantic framework for modals, and then offer some reasons for rejecting that explanation. I then propose an alternative account, according to which simple must sentences have the force of an imperative.

This essay introduces a puzzle about the interaction between quantifiers and epistemic modals. The puzzle motivates the idea that whether an object satisfies an epistemically modalized predicate depends on the mode of presentation of the domain of quantification. I compare two ways of implementing this idea, one using counterpart theory, the other using Aloni's 'conceptual covers' theory, and then provides some evidence in favor of the former.

This essay uses a puzzle about assertion and time to explore the pragmatics, semantics, and epistemology of future discourse. The puzzle concerns cases in which a subject is in a position to say, at an initial time t, that it will be that ϕ, but is not in a position to say, at a later time t′, that it is or was that ϕ, despite not losing or gaining any relevant evidence between t and t′. We consider a (...) number of approaches to the puzzle and defend the view that subjects in these cases lose knowledge simply by moving through time. (shrink)

Counterfactual attitudes like imagining, dreaming, and wishing create a problem for the standard formal semantic theory of de re attitude ascriptions. I show how the problem can be avoided if we represent an agent's attitudinal possibilities using "multi-centered worlds", possible worlds with multiple distinguished individuals, each of which represents an individual with whom the agent is acquainted. I then present a compositional semantics for de re ascriptions according to which singular terms are "assignment-sensitive" expressions and attitude verbs are "assignment shifters".

In his book Mental Files , Francois Recanati develops a theory of mind and language based on the idea that Fregean senses should be identified with ‘mental files’, mental representations whose primary function is to store information about objects. I discuss three aspects of Recanati’s book. The first concerns his use of acquaintance relations in individuating mental files, and what this means for ‘file dynamics’. The second concerns his comments on a theory that I have elsewhere advocated, the ‘sequenced worlds’ (...) or ‘multi-centered worlds’ theory. The third concerns how the mental file approach handles non-doxastic attitudes like imagining. (shrink)

When one considers one's own persistence over time from the first-person perspective, it seems as if facts about one's persistence are "further facts," over and above facts about physical and psychological continuity. But the idea that facts about one's persistence are further facts is objectionable on independent theoretical grounds: it conflicts with physicalism and requires us to posit hidden facts about our persistence. This essay shows how to resolve this conflict using the idea that imagining from the first-person point of (...) view is a guide to centered possibility, a type of possibility analyzed in terms of centered worlds. (shrink)

Jeffrey King has recently argued: (i) that the semantic value of a sentence at a context is (or determines) a function from possible worlds to truth values, and (ii) that this undermines Jason Stanley's argument against the rigidity thesis, the claim that no rigid term has the same content as a non-rigid term. I show that King's main argument for (i) fails, and that Stanley's argument is consistent with the claim that the semantic value of a sentence at a context (...) is (or determines) a function from worlds to truth values. (shrink)

Williams's famous thought experiment in "The Self and the Future" supports the Simple View of personal identity over time.

Kripke (1980) hypothesizes a link between rigidity and scope: a singular term is rigid over a space S of possibilities just in case it is scopeless with respect to modals that quantify over S. Kripke’s hypothesis works well when we consider the interaction of singular terms with metaphysical modals, but runs into trouble when we consider the interaction of singular terms with epistemic modals. After describing the trouble in detail, and considering one non-solution to it, I develop a novel version (...) of dynamic semantics that resolves the problem. (shrink)

This essay argues for a 'relationist' treatment of intentional identity sentences like (1) "Hob believes that a witch blighted Bob's mare and Nob believes that she killed Cob's sow" (Geach 1967). According to relationism, facts of the form "a believes that p and b believes that q" are not in general reducible to facts of the form "c believes that r". We first argue that extant, non-relationist treatments of intentional identity are unsatisfactory, and then go on to motivate and explore (...) a relationist alternative in some detail. We show that the general thesis of relationism can be directly motivated via cases already discussed in the literature, and then develop a particular version of relationism couched in the possible worlds framework. The resulting theory avoids the problems facing its non-relationist rivals, and yields a natural account of the truth-conditions of (1), truth-conditions which can be generated in a compositional manner by a version of dynamic semantics. The theory also helps us to cleanly separate semantic questions about intentional identity from metasemantic ones. (shrink)

A discussion of Imogen Dickie's book "Fixing Reference.".

Discussion of Emar Maier's essay “Fictional Names in Psychologistic Semantics.”.

Review of John MacFarlane's book, "Assessment Sensitivity: Relative Truth and Its Applications".

Psychology without genuinely thoughtful philosophy winds up as self-help gimmicks; philosophy without the insights & feeling of psychology remains an arcane academic game out of touch with life. By re-joining spirit & soul, this book is a major work of both philosophy & psychology. Casey asks puzzling questions & gives lasting answers. In a clear & vivid manner, one of America's best professional thinkers takes up one of the great themes of imagination, fantasy, hallucination, remembering & perceiving. Film & architecture (...) provide surprising material for his brilliant & useful account of basic philosophical problems which are also major mysteries of the soul. (shrink)

As these opening quotes acknowledge, the Prisoner’s Dilemma (PD) represents a core puzzle within the formal mathematics of game theory.3 Its rise in conspicuity is evident figure 2.1 above demonstrating a relatively steady rise in incidences of the phrase’s usage between 1960 to 1995, with a stable presence persisting into the twenty first century. This famous two-person “game,” with a stock narrative cast in terms of two prisoners who each independently must choose whether to remain silent or speak, each (...) advancing self-interest at the expense of the other and thereby achieving a mutually suboptimal outcome, mires any social interaction it is applied to into perplexity. The logic of this game proves the inverse of Adam Smith’s invisible hand: individuals acting on self interest will achieve a mutually suboptimal outcome. However, as this chapter illuminates, the assumptions underlying game theory drive this conclusion. (shrink)

Aristotle's claim in Metaphysics Z.6 that "each substance is the same as its essence" has long puzzled commentators. For it seems to conflict with two other Aristotelian theses: (1) primary substances are individuals (e.g., Socrates and Callias), and (2) essences are universals (e.g., Man and Horse). Three traditional solutions to this difficulty are considered and rejected. Instead, to make the Z.6 equation consistent with (1) and (2), I propose that it be interpreted to be making something other than a straightforward (...) identity claim. Callias is the same as his essence in the sense that to be identical to Callias is to be the same man as Callias (where Man is the essence of Callias). In general, x is identical to y if, and only if, x and y are the same E (where E specifies the "what it is to be" for x, i.e., the essence of x). So each of Socrates and Callias is the same as his essence, and Man is that essence, but Socrates and Callias are not identical, for they are not the same man. (shrink)

In the first chapter of his Knowledge and Lotteries, John Hawthorne argues that thinkers do not ordinarily know lottery propositions. His arguments depend on claims about the intimate connections between knowledge and assertion, epistemic possibility, practical reasoning, and theoretical reasoning. In this paper, we cast doubt on the proposed connections. We also put forward an alternative picture of belief and reasoning. In particular, we argue that assertion is governed by a Gricean constraint that makes no reference to knowledge, and that (...) practical reasoning has more to do with rational degrees of belief than with states of knowledge. (shrink)

Hempel's paradox of the ravens has to do with the question of what constitutes confirmation from a logical point of view; Wason 's selection task has been used extensively to investigate how people go about attempting to confirm or disconfirm conditional claims. This paper presents an argument that the paradox is resolved, and that people's typical performance in the selection task can be explained, by consideration of what constitutes an effective strategy for seeking evidence of the tenability of universal or (...) conditional claims in everyday life. (shrink)

This is an investigation of Aristotle's conception of accidental compounds (or "kooky objects," as Gareth Matthews has called them)—entities such as the pale man and the musical man. I begin with Matthews's pioneering work into kooky objects, and argue that they are not so far removed from our ordinary thinking as is commonly supposed. I go on to assess their utility in solving some familiar puzzles involving substitutivity in epistemic contexts, and compare the kooky object approach to more modern approaches (...) involving the notion of referential opacity. I conclude by proposing that Aristotle provides an implicit role for kooky objects in such metaphysical contexts as the Categories and Metaphysics. (shrink)

In recent years, many non-consequentialists such as Frances Kamm and Thomas Scanlon have been puzzling over what has come to be known as the Number Problem, which is how to show that the greater number in a rescue situation should be saved without aggregating the claims of the many, a typical kind of consequentialist move that seems to violate the separateness of persons. In this article, I argue that these non-consequentialists may be making the task more difficult than necessary, because (...) allowing aggregation does not prevent one from being a non-consequentialist. I shall explain how a non-consequentialist can still respect the separateness of persons while allowing for aggregation. (shrink)

Much of our know-how is acquired through practice: we learn how to cook by cooking, how to write by writing, and how to dance by dancing. As Aristotle argues, however, this kind of learning is puzzling, since engaging in it seems to require possession of the very knowledge one seeks to obtain. After showing how a version of the puzzle arises from a set of attractive principles, I argue that the best solution is to hold that knowledge-how comes in (...) degrees, and through practice a person gradually learns how to do something. However, the two standard accounts of know-how in the literature, intellectualism and anti-intellectualism, cannot properly account for the distinctive way in which know-how is gradually acquired by practice, a process in which conceptual representations and practical abilities are intimately interwoven. Drawing on Gareth Evans's work, I outline an account that may do so, and use this account to distinguish between two forms of learning to explain why skill generally cannot be learnt through testimony, and requires practice. (shrink)

In recent writing on the theory of knowledge a distinction has been drawn between ‘the language of appearing’ and ‘the sense-datum language’. The aim of this paper is to suggest that consideration of that distinction and of what Kant’s attitude toward it would have been can shed light on two otherwise-puzzling aspects of his doctrine in the Critique of Pure Reason: his adamant conviction that there are things-in-themselves, and his confidence that the Antinomies are resolved once we admit the transcendental (...) ideality of space and time. (shrink)

The concept of a time-relative interest is introduced by Jeff McMahan to solve certain puzzles about the badness of death. Some people (e.g. McMahan and David DeGrazia) believe that this concept can also be used to show that abortion is permissible. In this paper, I first argue that if the Time-Relative Interest Account permits abortion, then it would also permit infanticide.

A number of puzzles about propositional attitudes in semantics and philosophy revolve around apparent referential dependencies between different attitudes within a single agent’s mental state. In a series of papers, Hans Kamp offers a general framework for describing such interconnected attitude complexes, building on DRT and dynamic semantics. I demonstrate that Kamp’s proposal cannot deal with referential dependencies between semantically conflicting attitudes, such as those in Ninan’s puzzle about de re imagination. To solve the problem I propose to (...) replace Kamp’s treatment of attitudes as context change potentials with a two-dimensional analysis. (shrink)

Charles Chihara's new book develops and defends a structural view of the nature of mathematics, and uses it to explain a number of striking features of mathematics that have puzzled philosophers for centuries. The view is used to show that, in order to understand how mathematical systems are applied in science and everyday life, it is not necessary to assume that its theorems either presuppose mathematical objects or are even true. Chihara builds upon his previous work, in which he presented (...) a new system of mathematics, the constructibility theory, which did not make reference to, or presuppose, mathematical objects. Now he develops the project further by analysing mathematical systems currently used by scientists to show how such systems are compatible with this nominalistic outlook. He advances several new ways of undermining the heavily discussed indispensability argument for the existence of mathematical objects made famous by Willard Quine and Hilary Putnam. And Chihara presents a rationale for the nominalistic outlook that is quite different from those generally put forward, which he maintains have led to serious misunderstandings.A Structural Account of Mathematics will be required reading for anyone working in this field. (shrink)

There is a long and successful scholarly tradition of commenting on Nietzsche’s deep affinity for the philosophy of Heraclitus. But scholars remain puzzled as to why he suggested at the end of his career, in Ecce Homo, that the doctrine he valued most, the eternal recurrence of the same, might also have been taught by Heraclitus. This essay aims to answer this question through a close examination of Nietzsche’s allusions to Heraclitus in his first published mention of eternal recurrence in (...) The Joyful Science and in a related set of notes from the period when he was formulating and defending his doctrine of eternal recurrence while writing Thus Spoke Zarathustra. The key to answering this question, it is argued, is that Nietzsche came to believe that the doctrine of eternal recurrence, when properly understood as requiring identical repetition, has to presuppose a Heraclitean reality of eternal, absolute, and universal flux. (shrink)

The persistence of sexual harassment in the workplace, despite the general abhorrence for the behavior and programs designed to eradicate it, is puzzling. This paper proposes that gender differences in perceptions of sexual harassment and power differentials in the workplace which permit men to legitimize and institutionalize their perspective are implicated. These two phenomena combine to result in blaming the victim of sexual harassment for her own plight. Shifting attention to the target of sexual harassment facilitates the persistence of sexual (...) harassment because the institutionalized responses to the problem remain unquestioned. (shrink)

Polanyi’s philosophy of “man in thought,” by all appearances, chronologically and structurally, seems to be founded on his epistemology. Polanyi’s epistemology of tacit knowing as integration is teleological. By his “ontological equation,” he patterned comprehensive (and complex) entities as emergence on his epistemology. This forces him to make puzzling formulaic statements which land him in trouble with fellow scientists. The equation also lends itself to unwarranted problematic interpretations. The exploration leads me to suggest that Polanyi may be understood as a (...) “rational realist” who insisted on a tacit knowledge version of interactionist mode of mind-body relation. (shrink)

In this paper we examine a puzzle recently posed by Aaron Preston for the traditional realist assay of property (quality) instances. Consider Socrates (a red round spot) and red1—Socrates’ redness. For the traditional realist, both of these entities are concrete particulars. Further, both involve redness being `tied to’ the same bare individuator. But then it appears that red1 is duplicated in its ‘thicker’ particular (Socrates), so that it can’t be predicated of Socrates without redundancy. According to Preston, this suggests (...) that a concrete particular and its property instances aren’t genuinely related. We argue that Preston’s proffered solution here—to treat property instances as “mental constructs”—is fraught with difficulty. We then go on to show how, by fine-tuning the nature of bare particulars, treating them as abstract modes of things rather than concrete particulars, the traditional realist can neatly evade Preston’s puzzle. (shrink)

Next SectionThis article argues against two dominant accounts of the nature of nostalgia. These views assume that nostalgia depends, in some way, on comparing a present situation with a past one. However, neither does justice to the full range of recognizably nostalgic experiences available to us – in particular, ‘Proustian’ nostalgia directed at involuntary autobiographical memories. Therefore, the accounts in question fail. I conclude by considering an evaluative puzzle raised by Proustian nostalgia when it is directed at memories that (...) the nostalgist herself regards as non-veridical. (shrink)

Libertarians such as J.R. Lucas have abandoned traditional Christian doctrines because they cannot reconcile them with the freedom of the will. Traditional Christian thinkers such as Augustine have repudiated libertarianism because they cannot reconcile it with the dogmas of the Faith. In Free Will and the Christian Faith, W.S. Anglin demonstrates that free will and traditional Christianity are ineed compatible. He examines, and solves, puzzles about the relationships between free will and omnipotence, omniscience, and God's goodness, using the idea of (...) free will to answer the question of why God allows evil, and presenting arguments that link free will to eternal life and to the nature of revelation. Topics covered include the meaning of life, the soul and Lesbegue measure, and strategies for discerning the voice of God. (shrink)

Polanyi’s philosophy of “man in thought,” by all appearances, chronologically and structurally, seems to be founded on his epistemology. Polanyi’s epistemology of tacit knowing as integration is teleological. By his “ontological equation,” he patterned comprehensive (and complex) entities as emergence on his epistemology. This forces him to make puzzling formulaic statements which land him in trouble with fellow scientists. The equation also lends itself to unwarranted problematic interpretations. The exploration leads me to suggest that Polanyi may be understood as a (...) “rational realist” who insisted on a tacit knowledge version of interactionist mode of mind-body relation. (shrink)

Polanyi’s philosophy of “man in thought,” by all appearances, chronologically and structurally, seems to be founded on his epistemology. Polanyi’s epistemology of tacit knowing as integration is teleological. By his “ontological equation,” he patterned comprehensive (and complex) entities as emergence on his epistemology. This forces him to make puzzling formulaic statements which land him in trouble with fellow scientists. The equation also lends itself to unwarranted problematic interpretations. The exploration leads me to suggest that Polanyi may be understood as a (...) “rational realist” who insisted on a tacit knowledge version of interactionist mode of mind-body relation. (shrink)

The very idea of informative analysis gives rise to a well-known paradox. Yet a parallel puzzle, herein called the paradox of synonymy, arises for statements which do not express analyses. The paradox of synonymy has a straightforward metalinguistic solution: certain words are referring to themselves. Likewise, the paradox of analysis can be solved by recognizing that certain expressions in an analysis statement are referring to their own semantic structures.

My objective in this project is to explore the concept of moral luck as it relates to sports. I am especially interested in constitutive luck. As a foundation I draw from both Bernard Williams and Thomas Nagel’s classic handling of moral luck, generally. Within the philosophy of sport are similar explorations of this nexus by Robert Simon and David Carr that also factor into the present work. My intent is to put a new lens in front of a puzzle (...) drawn from Torbjörn Tännsjö’s well-known article ‘Is Our Admiration of Sports Heroes Facistoid?’ Specifically, the idea that we might admire an athlete who excels without having worked hard for it. If we may call this puzzle ‘the talent problem,’ the questions driving the present work are as follows: what is the relationship between moral luck and the talent problem, and can this relationship provide a prescription for morally assessing the talent problem? The thesis that this exploratory work suggests that more complex games (and... (shrink)

Bohmian mechanics, a hydrodynamic formulation of the quantum theory, constitutes a useful tool to understand the role of the phase as the mechanism responsible for the dynamical evolution displayed by quantum systems. This role is analyzed and discussed here in the context of quantum interference, considering to this end two well-known scenarios, namely Young’s two-slit experiment and Wheeler’s delayed choice experiment. A numerical implementation of the first scenario is used to show how interference in a coherent superposition of two counter-propagating (...) wave packets can be seen and explained in terms of an effective model consisting of a single wave packet scattered off an attractive hard wall. The outcomes from this model are then applied to the analysis of Wheeler’s delayed choice experiment, also recreated by means of a reliable realistic simulation. Both examples illustrate quite well how the Bohmian formulation helps to explain in a natural way aspects of the quantum theory typically regarded as paradoxical. In other words, they show that a proper understanding of quantum phase dynamics immediately removes any trace of unnecessary artificial wave-particle arguments. (shrink)

I argue that a two-dimensional model of social objects is uniquely positioned to deliver explanations for some of the puzzling metaphysical features of words. I consider how a type-token model offers explanations for the metaphysical features of words, but I give reasons to find the model wanting. In its place, I employ an alternative model from social ontology to explain the puzzling data and questions that are generated from the metaphysical features of words. In the end I chart a new (...) path that foregrounds the agent-dependence and social conditions for word kinds. (shrink)

When I first began to study philosophy I was introduced to the discipline in that magically traditional way by being assured that what lay before me was the love of wisdom. Why this had any adolescent appeal still puzzles me, but, like many others, I joined in as spectator to and occasionally as a removed participant in all the rough and tumble of a Socratic sparring match in the Athenian marketplace. There was some talk of wisdom, to be sure, which (...) seemed to link it with a humble admission of ignorance or a pitch against yielding to temptation, but neither was ever deeply revealing. I waited for more. My next encounter a few years later turned up little more than the surname of an English disciple of Wittgenstein. Somehow the trail had gone to brush, despite the apparent health and energy of philosophy. (shrink)

States of the brain represent states of the world. A puzzle arises when one learns that at least some of the mind/brain’s internal representations, such as a sensation of heat or a sensation of red, do not genuinely resemble the external realities they allegedly represent: the mean kinetic energy of the molecules of the substance felt (temperature) and the mean electromagnetic reflectance profile of the seen object (color). The historical response has been to declare a distinction between objectively real (...) properties, such as shape motion and mass, and merely subjective properties, such as heat, color and smell. This hypothesis leads to trouble. A challenge for cognitive neurobiology is to characterize, in suitably general terms, the nature of the relationship between brain models and the world modeled. We favor the hypothesis that brains develop high-dimensional maps whose internal relations correspond in varying degrees of fidelity to the enduring causal structure of the world. From this perspective, the basic epistemological relation is not “single-percept to single- external-feature” but rather “background-brain-maps to causal-domain-portrayed. (shrink)

Many people feel the pull of both creationism and evolution as explanations for the origin of species, despite the direct contradiction. Some respond by endorsing theistic evolution, integrating the scientific and religious explanations by positing that God initiated or guided the process of evolution. Others, however, simultaneously endorse both evolution and creationism despite the contradiction. Here, we illustrate this puzzling phenomenon with interviews with a diverse sample. This qualitative data reveals several approaches to coping with simultaneous inconsistent explanations. For example, (...) some people seem to manage this contradiction by separating out ideological claims, which prioritize identity expression, from fact claims, which prioritize truth. Fitting with this interpretation, ambivalent individuals tended to call explanations “beliefs”, avoid mention of truth or falsity, and ground one or both beliefs in identity and personal history. We conclude with a brief discussion of the affordances of this distinction. (shrink)

Since the 1970s, historical sociology in the United States has been constituted by a configuration of substantive questions, a theoretical vocabulary anchored in concepts of economic interest and rationalization, and a methodological commitment to comparison. More recently, this configuration has been destabilized along each dimension: the increasing autonomy of comparative-historical methods from specific historical puzzles, the shift from the analysis of covariation to theories of historical process, and new substantive questions through which new kinds of arguments have been elaborated. Although (...) the dominant responses have centered on methodological elaboration and epistemological debate, greater attention to historical process also informs new strategies for defining cases and framing puzzles, thereby highlighting different categories of empirical questions: social caging, group formation, and multiple orders. The most striking shift is from the imagery of systems-and-crises, which highlighted revolution and state-building, to multidimensional understandings of emergence and destabilization. (shrink)

This discussion paper addresses Ian Wilks’ defence of the risk‐related standard of competence that appears in Bioethics 11. Wilks there argues that the puzzle posed by Mark Wicclair in Bioethics 5 against Dan Brock's argument in favour of a risk‐related standard of competence — namely that Brock’s argument allows for situations of asymmetrical competence — is not a genuine problem for a risk‐related standard of competence. To show this, Wilks presents what he believes to be two examples of real (...) situations in which asymmetrical competence arises. I argue that insofar as Wilks equivocates two senses of competence in his examples — namely, competence to perform a task and competence in performing a task — Wilks is unable to illustrate the existence of real situations of asymmetrical competence. By examining the way in which Wilks equivocates two senses of competence in his examples, and by applying the results of this examination to the problem of patient competency within the medical field, I argue that not only does Wilks fail to show that situations of asymmetrical competence exist, but he is also unable to provide a foundation for understating how the risk‐related standard of competence can strike a balance between an individual’s autonomy and benevolent intervention. I thus conclude that insofar as Wilks fails to answer the objections raised by Wicclair and others against the risk‐related standard of competence, the risk‐related standard of competence continues to be undermined by the problem of asymmetrical competence. (shrink)

presents a puzzle as to whether Aristotle views morally virtuous activity as happiness, as book 1 seems to indicate, or philosophical contemplation as happiness, as book 10 seems to indicate. The most influential attempts to resolve this issue have been either monistic or inclusivist. According to the monists, happiness consists exclusively of contemplation. According to the inclusivists, contemplation is one constituent of happiness, but morally virtuous activity is another. In this essay I will examine influential defenses of monism. Finding (...) these accounts superior to inclusivism, but still deficient, I will present and defend a dualistic account of happiness in which two different types of happiness, one divine and one human, are present in Nicomachean Ethics. When Aristotle commends contemplation as a happiness that humans can attain, he is careful to specify that this activity corresponds to a capacity (nous) that is not, properly speaking, human, even though humans can exercise it. Contemplation, the divine good, is the highest good that humans can obtain, but it is not the characteristic human good. The characteristic human good corresponds to the specifically and merely human function, which is an activity of the compound of human reason and emotions. (shrink)