This is a book symposium on Kevin Krein’s Philosophy and Nature Sports. Gunnar Breivik, Jim Parry and Irena Martínková, and Rebekah Humphreys provide critical commentary on the text. The critical comments are followed by a response from Krein. The discussion covers a broad range of topics. These include the definition of “sport,” comparisons between nature sports and friluftsliv, the role of risk in nature sports, the experience of flow and the sublime in nature sports, and the understanding (...) of nature. Krein argues, as he does in the book and elsewhere, that nature sports provide a framework that facilitates intimate and meaningful interactions with nature. He argues further that the discussion included here shows how deeply our understanding of nature, and our understanding of nature sports, influence both our experiences within those sports and our broader experience of the world. (shrink)

Sports such as surfing, mountaineering, and backcountry skiing are often grouped together. But what exactly it is that they share, and the implications of their common characteristics, have not been explained clearly. I refer to such sports as ‘nature sports’ and argue that they share a fundamental structure in which human beings and features of the natural world are brought together. The principal claim I make is that nature sports are those sports in which a particular natural feature, or combination (...) of natural features, plays at least one of the primary roles that human competitors or partners play in traditional or standard sports. This article is a detailed explanation of that claim. (shrink)

Sports such as surfing, mountaineering, and backcountry skiing are often grouped together. But what exactly it is that they share, and the implications of their common characteristics, have not been explained clearly. I refer to such sports as ‘nature sports’ and argue that they share a fundamental structure in which human beings and features of the natural world are brought together. The principal claim I make is that nature sports are those sports in which a particular natural feature, or combination (...) of natural features, plays at least one of the primary roles that human competitors or partners play in traditional or standard sports. This article is a detailed explanation of that claim. (shrink)

Over the past several years, I have been arguing that nature sports such as surfing, backcountry skiing, and mountaineering are best described as sports in which athletes interact dynamically with natural features rather than compete with other humans. This article is part of a larger attempt to trace the implications of that view. Specifically, I consider the relationship between nature sports and competition. To this purpose, I address three separate, but related topics: First, I reply to Leslie Howe’s article, ‘On (...) Competing Against Oneself, Or, I Need to Get a Different Voice in My Head’, in which she argues that there is a version of self-competition that is central to nature sports. Second, I argue that adapting nature sports to fit into formal competitive frameworks is problematic because, when we do so, the focus shifts from athletes interacting with natural features to athletes using natural features to outdo other athletes. And third, I argue that nature sports may seem competitive because the in.. (shrink)

Mental representation has long been central to standard accounts of action and cognition generally, and in the context of sport. We argue for an enactive and embodied account that rejects the idea that representation is necessary for cognition, and posit instead that cognition arises, or is enacted, in certain types of interactions between organisms and their environment. More specifically, we argue that enactive theories explain some kinds of high-level cognition, those that underlie some of the best performances in sport and (...) similar practices (dance, martial arts), better than representational accounts. Flow and mushin (mindfully fluid awareness) are explained enactively to this end. This results in a mutually beneficial analysis where enactivism offers theoretical and practical advantages as an explanation of high performance in sports, while the latter validates enactivism. (shrink)

Many philosophers of sport maintain that athletics can contribute to our understanding of ourselves and the environments in which we live. It may be relatively easy to offer accounts of how athletes might acquire self-knowledge through sport; however, it is far more difficult to see how sport could add to the general understanding of human individuals, cultural frameworks or the material world. The study of sport as a way of worldmaking is helpful in understanding how sport can contribute to the (...) pursuit of knowledge in such areas. The position I present is based on arguments made by Gunter Gebauer in his 1993 presidential address to the Philosophic Society for the Study of Sport, 'Sport, theater, and ritual: Three ways of worldmaking', and in my explanation and interpretation of Gebauer's position, I rely heavily on Nelson Goodman's Ways of worldmaking . Gebauer's work is focused on traditional sports, and he argues that such sports create worlds that represent fundamental attitudes and values of the cultures that produce them. I argue that alternative sports are well suited to create new and original worlds that instantiate value systems in opposition to mainstream culture. I argue further that nature sports such as climbing and surfing represent relationships between humans and natural features, and that such sports, as a subcategory of alternative sports, are in a position to create new and original frameworks that can help us to better comprehend our relationships with natural environments. (shrink)

Volume 47, Issue 1, March 2020, Page 142-146.

In this interest of time, I’ll just say something directly: this is an incredible book. Reading it, thinking it through, is extremely rewarding. I haven’t read a work of philosophy that had as much impact on me since being in school myself. The book presents you with new ideas and connections and it forces you to see philosophy and its history in new ways, even if you (like me) had been quite attached to your old ways. The book got into (...) my head. Now I find myself, in idle moments, arguing with Paul up there in my head; as if there is a little copy of him in there now, making the case for his versions of inferentialism and cognitive contextualism. Fortunately, Paul is in my experience unfailingly nice, generous and sympathetic even in argument—otherwise it might not be as nice to have a copy of him in your head. Still, the copy pales in comparison to the original, so it is great to be here. (shrink)

A definition of emotion common to the affective sciences is an urgent desideratum. Lack of such a definition is a constant source of numerous misunderstandings and a series of mostly fruitless debates. There is little hope that there ever will be agreement on a common definition of emotion, given the sacred traditions of the disciplines involved and the egos of the scholars working in these disciplines. Our aim here is more modest. We propose a list of elements for a working (...) definition of emotion and discuss the justification for the inclusion of elements from our respective perspectives (philosophy and psychology). This working partial definition may at least serve as a litmus test to examine theories of emotion, old and new, across disciplinary boundaries. (shrink)

Predictable polarization is everywhere: we can often predict how people’s opinions, including our own, will shift over time. Extant theories either neglect the fact that we can predict our own polarization, or explain it through irrational mechanisms. They needn’t. Empirical studies suggest that polarization is predictable when evidence is ambiguous, that is, when the rational response is not obvious. I show how Bayesians should model such ambiguity and then prove that—assuming rational updates are those which obey the value of evidence—ambiguity (...) is necessary and sufficient for the rationality of predictable polarization. The main theoretical result is that there can be a series of such updates, each of which is individually expected to make you more accurate, but which together will predictably polarize you. Polarization results from asymmetric increases in accuracy. This mechanism is not only theoretically possible, but empirically plausible. I argue that cognitive search—searching a cognitively accessible space for a particular item—often yields asymmetrically ambiguous evidence, I present an experiment supporting its polarizing effects, and I use simulations to show how it can explain two of the core causes of polarization: confirmation bias and the group polarization effect. (shrink)

We argue that explainable artificial intelligence (XAI), specifically reason-giving XAI, often constitutes the most suitable way of ensuring that someone can properly be held responsible for decisions that are based on the outputs of artificial intelligent (AI) systems. We first show that, to close moral responsibility gaps (Matthias 2004), often a human in the loop is needed who is directly responsible for particular AI-supported decisions. Second, we appeal to the epistemic condition on moral responsibility to argue that, in order to (...) be responsible for her decision, the human in the loop has to have an explanation available of the system’s recommendation. Reason explanations are especially well-suited to this end and we examine whether – and how – it might be possible to make such explanations fit with AI systems. We support our claims by focusing on a case of disagreement between human in the loop and AI system. (shrink)

In her book Social Goodness, Charlotte Witt gives an account of the normativity of social norms, crucially appealing to (and naming) social role normativity. Social role normativity is a distinctive kind of normativity that follows from social roles. For example, teachers ought to teach and students ought to do their homework. According to Witt's artisanal model of social role normativity, we should make sense of social role normativity by reference to artisanal roles, like being a carpenter. Just as carpenters have (...) skills, techniques, and expertise associated with their craft, social roles have skills, techniques, and expertise associated with them. The artisanal model presents the individual craftsperson, taught by a uniquely qualified expert, as the paradigm. Because of this, I argue that the artisanal model struggles to capture the messiness of the actual world, where expertise is distributed, unstable, and contested. To accommodate the real world, we should move away from Witt's individualistic artisanal model. Instead of focusing on individual artisans, our account of social role normativity should focus on communities and institutions that promote artisanal practices. (shrink)

Husserl seems to have devoted roughly equal amounts of energy and pages to the description of perception, judgement, and imagination. By “description,” he meant the analysis of the traits and components of mental states or acts and their objects. As his views changed over the years about the nature of intentionality and philosophy, the descriptive psychology of the Logical Investigations (1900/01) gave way to descriptive programmes in which the objects of perception and of judgement were conceived of in terms of (...) a new, analytic framework; in particular Husserl lost interest in describing the things and processes in the real world that are the objects of perception and judgement and so too in describing their relations to these acts. His new analytic framework, particularly as it applies to perception, has been thoroughly expounded and discussed in the literature. My aim here is to expound Husserl's first descriptions of perception within the framework of the Investigations and to incorporate as far as possible his later descriptive results to the extent that these are separable from his later turn to idealism. (shrink)

An important and engaging book on a key argument in contemporary debates about free will and moral responsibility.

Introduction -- Organization, society and politics -- An Aristotelian perspective -- The politics -- The public good -- The rhetoric -- Talk and texts -- The Nichomachean ethics -- Decision making and ethics -- The Poetics -- Bolshevism to ballet in three steps -- What is "public interest"?: a case study -- Where do we go from here?

ABSTRACTAndrew Bacon, Matti Eklund, and Patrick Greenough have individually proposed objections to the project in my book, Replacing Truth. Briefly, the book outlines a conceptual engineering project – our defective concept of truth is replaced for certain purposes with a team of concepts that can do some of the jobs we thought truth could do. Here, I respond to their objections and develop the views expressed in Replacing Truth in various ways.

This paper presents the results of two corpus studies investigating the discourse surrounding conspiracy theories and genuine theories. The results of these studies show that conspiracy theories lack the epistemic and scientific standing characteristic of theories more generally. Instead, our findings indicate that conspiracy theories are spread in a manner that resembles the dissemination of rumors and falsehoods. Based on these empirical results, we argue that it is time for both re-engineering conspiracy theory and for relabeling "conspiracy theory". We propose (...) relabelling conspiracy theories as either "conspiracy stories" or "conspiracy narratives" to more accurately convey their true nature. (shrink)

Assertions are the centre of gravity in social epistemology. They are the vehicles we use to exchange information within scientific groups and society as a whole. It is therefore essential to determine under which conditions we are permitted to make an assertion. In this paper we argue and provide empirical evidence for the view that the norm of assertion is justified belief: truth or even knowledge are not required. Our results challenge the knowledge account advocated by, e.g. Williamson (1996), in (...) general, and more specifically, put into question several studies conducted by Turri (2013, 2016) that support a knowledge norm of assertion. Instead, the justified belief account championed by, e.g. Douven (2006), seems to prevail. (shrink)

There are many things—call them ‘experts’—that you should defer to in forming your opinions. The trouble is, many experts are modest: they’re less than certain that they are worthy of deference. When this happens, the standard theories of deference break down: the most popular (“Reflection”-style) principles collapse to inconsistency, while their most popular (“New-Reflection”-style) variants allow you to defer to someone while regarding them as an anti-expert. We propose a middle way: deferring to someone involves preferring to make any decision (...) using their opinions instead of your own. In a slogan, deferring opinions is deferring decisions. Generalizing the proposal of Dorst (2020a), we first formulate a new principle that shows exactly how your opinions must relate to an expert’s for this to be so. We then build off the results of Levinstein (2019) and Campbell-Moore (2020) to show that this principle is also equivalent to the constraint that you must always expect the expert’s estimates to be more accurate than your own. Finally, we characterize the conditions an expert’s opinions must meet to be worthy of deference in this sense, showing how they sit naturally between the too-strong constraints of Reflection and the too-weak constraints of New Reflection. (shrink)

What is essential to language? Two thinkers active in Vienna in the 1930's, Karl Bühler and Ludwig Wittgenstein, gave apparently incompatible answers to this question. I compare what Wittgenstein says about language and reference at the beginning of his Philosophical Investigations with some aspects of the descriptive analysis of language worked out by Bühler between 1907 and 1934, a systematic development of the philosophies of mind and language of such heirs of Brentano as Martinak, Marty, Meinong, Landgrebe and Husserl. Y (...) a-Uil quelque chose qui est essentiel au langage? Deux penseurs actifs à Vienne dans les années trente, Karl Bühler et Ludwig Wittgenstein, donnent à cette question des réponses qui sont apparemment incompatibles. Je compare ce que Wittgenstein dit du langage et de la référence au début de ses Investigations Philosophiques avec quelques aspects de l'analyse descriptive élaborée par Bühler entre 1907 et 1934, un développement systématique des philosophies de l'esprit et du langage des héritiers de Brentano tels que Martinak, Marty, Meinong, Landgrebe et Husserl. (shrink)

The standard interpretation of quantum mechanics and a standard interpretation of the awareness of pain have a common feature: Both postulate the existence of an irresolvable duality. Whereas many physicists claim that all particles exhibit particle and wave properties, many philosophers working on pain argue that our awareness of pain is paradoxical, exhibiting both perceptual and introspective characteristics. In this chapter, we offer a pessimistic take on the putative paradox of pain. Specifically, we attempt to resolve the supposed paradox by (...) undermining the reasons offered for accepting the introspective side of the dualism. (shrink)

Phenomenal Conservatism (the view that an appearance that p gives one prima facie justification for believing that p) is a promising, and popular, internalist theory of epistemic justification. Despite its popularity, it faces numerous objections and challenges. For instance, epistemologists have argued that Phenomenal Conservatism is incompatible with Bayesianism, is afflicted by bootstrapping and cognitive penetration problems, does not guarantee that epistemic justification is a stable property, does not provide an account of defeat, and is not a complete theory of (...) epistemic justification. This book shows that Phenomenal Conservatism is actually immune to some of these problems, though not all of them. Accordingly, it explores the prospects of integrating Phenomenal Conservatism with Explanationism (the view that epistemic justification is a matter of explanatory relations between one’s evidence and propositions supported by that evidence). The resulting theory, Phenomenal Explanationism, has advantages over Phenomenal Conservatism and Explanationism taken on their own. Phenomenal Explanationism is a highly unified, comprehensive internalist theory of epistemic justification that delivers on the promises of Phenomenal Conservatism while avoiding its pitfalls. (shrink)

This book defends a new interpretation of Hegel's theoretical philosophy, according to which Hegel's project in his central Science of Logic has a single organizing focus, provided by taking metaphysics as fundamental to philosophy, rather than any epistemological problem about knowledge or intentionality. Hegel pursues more specifically the metaphysics of reason, concerned with grounds, reasons, or conditions in terms of which things can be explained-and ultimately with the possibility of complete reasons. There is no threat to such metaphysics in epistemological (...) or skeptical worries. The real threat is Kant's Transcendental Dialectic case that metaphysics comes into conflict with itself. But Hegel, despite familiar worries, has a powerful case that Kant's own insights in the Dialectic can be turned to the purpose of constructive metaphysics. And we can understand in these terms the unified focus of the arguments at the conclusion of Hegel's Science of Logic. Hegel defends, first, his general claim that the reasons which explain things are always found in immanent concepts, universals or kinds. And he will argue from here to conclusions which are distinctive in being metaphysically ambitious yet surprisingly distant from any form of metaphysical foundationalism, whether scientistic, theological, or otherwise. Hegel's project, then, turns out neither Kantian nor Spinozist, but more distinctively his own. Finally, we can still learn a great deal from Hegel about ongoing philosophical debates concerning everything from metaphysics, to the philosophy of science, and all the way to the nature of philosophy itself. (shrink)

Ways into the Logic of Alexander of Aphrodisias is intended to give an overview of the logic of Alexander of Aphrodisias (fl. early third century A D). Since ...

There is growing interest in understanding and eliciting division of labor within groups of scientists. This paper illustrates the need for this division of labor through a historical example, and a formal model is presented to better analyze situations of this type. Analysis of this model reveals that a division of labor can be maintained in two different ways: by limiting information or by endowing the scientists with extreme beliefs. If both features are present however, cognitive diversity is maintained indefinitely, (...) and as a result agents fail to converge to the truth. Beyond the mechanisms for creating diversity suggested here, this shows that the real epistemic goal is not diversity but transient diversity. (shrink)

In _Marx at the Margins_, Kevin Anderson uncovers a variety of extensive but neglected texts by the well-known political economist which cast what we thought we knew about his work in a startlingly different light. Analyzing a variety of Marx’s writings, including journalistic work written for the _New York Tribune_, Anderson presents us with a Marx quite at odds with our conventional interpretations. Rather than providing us with an account of Marx as an exclusively class-based thinker, Anderson here offers (...) a portrait of Marx for the twenty-first century: a global theorist whose social critique was sensitive to the varieties of human social and historical development, including not just class, but nationalism, race, and ethnicity, as well. _Marx at the Margins _ultimately argues that alongside his overarching critique of capital, Marx created a theory of history that was multi-layered and not easily reduced to a single model of development or revolution. Through highly-informed readings on work ranging from Marx’s unpublished 1879–82 notebooks to his passionate writings about the antislavery cause in the United States, this volume delivers a groundbreaking and canon-changing vision of Karl Marx that is sure to provoke lively debate in Marxist scholarship and beyond. (shrink)

This paper advances the conception of social entrepreneurs as caring entrepreneurs. We argue that the care ethics of social entrepreneurs, implying the pursuit of caring goals through caring processes, can be challenged when they engage in the process of scaling up their ventures. We propose that social entrepreneurs can sustain their care ethics as the essential dimension of their venture only if they are able to build a caring enterprise. Organizational care designates the set of organizing principles that facilitate the (...) embedding of care ethics at an organizational level, beyond the imprinting induced by social entrepreneurs’ personal ethics. (shrink)

Kevin M. Cahill reclaims one of Ludwig Wittgenstein's most passionately pursued endeavors: to reawaken a sense of wonder around human life and language and its mysterious place in the world. Following the philosopher's spiritual and cultural criticism and tying it more tightly to the overall evolution of his thought, Cahill frames an original interpretation of Wittgenstein's engagement with Western metaphysics and modernity, better contextualizing the force of his work. Cahill synthesizes several approaches to Wittgenstein's life and thought. He stresses (...) the nontheoretical aspirations of the philosopher's early and later writings, combining key elements from the so-called resolute readings of the _Tractatus_ with the "therapeutic" readings of _Philosophical Investigations_. Cahill shows how continuity in Wittgenstein's cultural and spiritual concerns informed if not guided his work between these texts, and in his reading of the _Tractatus_, Cahill identifies surprising affinities with Martin Heidegger's _Being and Time_--a text rarely associated with Wittgenstein's early formulations. In his effort to recapture wonder, Wittgenstein both avoided and undermined traditional philosophy's reliance on theory. As Cahill relates the steps of this bold endeavor, he forms his own innovative, analytical methods, joining historicist and contextualist approaches to text-based, immanent readings. The result is an original, sustained examination of Wittgenstein's thought. (shrink)

Existentialism claims that there is no human reality except in action: pragmatism argues that meaning and truth are given only in practice. Wittgenstein calls for attention to forms of life, Marxism calls for attention to doing, and feminism calls for attention to the body. What do these tell us about ritual acts and their connection to spirit and to truth in Christianity and other world religions? Religious rituals have a special status as virtually pure forms of belief in action. Thinking (...) Through Rituals asks how philosophical tools like existentialism and Marxism can help us to understand the thought behind actions such as tasting the Christian host, joining in ceremony and speaking sacred words. Thinking Through Rituals proposes a new philosophical understanding of rituals as mental strategies giving access to knowledge of the world, in opposition to traditional approaches which see rituals as forms of social organization and control. Covering areas including the body, pilgrimage,initiation, sacrifice and art, this is an exciting look at the relationship between doing and meaning which is implied by ritual practice, but most fully explained by philosophical theory. (shrink)

Do people tend to be overconfident? Many think so. They’ve run studies on whether people are calibrated: whether their average confidence in their opinions matches the proportion of those opinions that are true. Under certain conditions, people are systematically ‘over-calibrated’—for example, of the opinions they’re 80% confident in, only 60% are true. From this empirical over-calibration, it’s inferred that people are irrationally overconfident. My question: When and why is this inference warranted? Answering it requires articulating a general connection between being (...) rational and being right—something extant studies have not done. I show how to do so using the notion of deference. This provides a theoretical foundation for calibration research, but also reveals a flaw: the connection between being rational and being right is much weaker than is standardly assumed, since rational people can often be expected to be miscalibrated. Thus we can’t test whether people are overconfident by simply testing whether they are over-calibrated; instead, we must try to predict the rational deviations from calibration, and then compare those predictions to people’s performance. I show how this can be done—and that doing so complicates the interpretation of robust empirical effects. (shrink)

_Challenges conventional understandings of Heidegger’s account of the body._.

Born 80 years ago, Continental Philosophy is on its last legs. Its extraordinary career has been helped along by an almost total absence of interest on the part of analytic or other exact philosophers in what the Australian philosopher David Stove calls "the nosology of philosophy" 1, the exploration of the manifold forms taken by bad philosophy. Stove points out that such an enterprise involves doing history. A nosology of Continental Philosophy is, at least in the first instance, inseparable from (...) the history of this strand in twentieth century philosophy, a history which would make clear the relations, philosophical and historical, between it and exact philosophy. Rorty is quite right to point to the absence of such a historical perspective. (shrink)

Therapy for metaphysics -- Concepts, rules, and the spirit of recognition -- Meaning and meanings -- Reference and presence -- Truth and correspondence -- Emancipating theology.

Kevin Scharp proposes an original theory of the nature and logic of truth on which truth is an inconsistent concept that should be replaced for certain theoretical purposes. He argues that truth is best understood as an inconsistent concept, and proposes a detailed theory of inconsistent concepts that can be applied to the case of truth. Truth also happens to be a useful concept, but its inconsistency inhibits its utility; as such, it should be replaced with consistent concepts that (...) can do truth's job without giving rise to paradoxes. To this end, Scharp offers a pair of replacements, which he dubs ascending truth and descending truth, along with an axiomatic theory of them and a new kind of possible-worlds semantics for this theory. He goes to develop Davidson's idea that truth is best understood as the core of a measurement system for rational phenomena, and offers a semantic theory that treats truth predicates as assessment-sensitive and solves the problems posed by the liar and other paradoxes. (shrink)

This paper offers a phenomenological analysis of Heidegger’s account of “the uncanny” as it relates to the coronavirus pandemic. It explores how the pandemic has disrupted Dasein’s sense of “homelike” familiarity and how this disruption has undermined our ability to be, that is, to understand or make sense of things. By examining our experience of temporality, lived-space, and intersubjectivity, the paper illuminates different ways in which the pandemic has left us confused and anxious about our self-interpretations and future projects. The (...) paper concludes by showing how the uncanny is not simply something we feel in times of crisis; it is, for Heidegger, who we are. This means the secure feeling of familiarity that we embodied prior to the pandemic was an illusion all along, that we are not and never have been at-home in the world. (shrink)

The answer I shall sketch is not mine. Nor, as far as I can tell, is it an answer to be found in the voluminous literature inspired by Kripke’s work. Many of the elements of the answer are to be found in the writings of Wittgenstein and his Austro-German predecessors, Martinak, Husserl, Marty, Landgrebe and Bühler. Within this Austro-German tradition we may distinguish between a strand which is Platonist and anti-naturalist and a strand which is nominalist and naturalist. Thus Husserl’s (...) account of what he calls “directly referring” uses of singular terms invokes senses or individual concepts, albeit simple, not descriptive senses. But the account of reference fixing and reference given by Landgrebe, Bühler and Wittgenstein rejects senses.1 I confine further reference to these writers to footnotes since my aim here is to develop and unify some of their suggestions, in particular by comparing them with more recent work (cf. Mulligan 1997). (shrink)

Increasingly, epistemologists are becoming interested in social structures and their effect on epistemic enterprises, but little attention has been paid to the proper distribution of experimental results among scientists. This paper will analyze a model first suggested by two economists, which nicely captures one type of learning situation faced by scientists. The results of a computer simulation study of this model provide two interesting conclusions. First, in some contexts, a community of scientists is, as a whole, more reliable when its (...) members are less aware of their colleagues' experimental results. Second, there is a robust tradeoff between the reliability of a community and the speed with which it reaches a correct conclusion. ‡The author would like to thank Brian Skyrms, Kyle Stanford, Jeffrey Barrett, Bruce Glymour, and the participants in the Social Dynamics Seminar at University of California–Irvine for their helpful comments. Generous financial support was provided by the School of Social Science and Institute for Mathematical Behavioral Sciences at UCI. †To contact the author, please write to: Department of Philosophy, Baker Hall 135, Carnegie Mellon University, Pittsburgh, PA 15213-3890; e-mail: [email protected]. (shrink)

This book offers cutting edge research on the modifications and disruptions of bodily experience in the context of anxiety, depression, trauma, chronic illness, pain, and aging. It presents original contributions in applied phenomenology, biomedical ethics, and the use of medical technologies.

This book aims to develop certain aspects of Gottlob Frege’s theory of meaning, especially those relevant to intensional logic. It offers a new interpretation of the nature of senses, and attempts to devise a logical calculus for the theory of sense and reference that captures as closely as possible the views of the historical Frege. (The approach is contrasted with the less historically-minded Logic of Sense and Denotation of Alonzo Church.) Comparisons of Frege’s theory with those of Russell and others (...) are given. It is in the end shown that developing Frege’s theory in these ways reveals serious problems hitherto largely unnoticed, including those possibly rendering a Fregean intensional logic inconsistent even if his naïve class theory is excluded. (shrink)