This is a volume of philosophical studies, centred on problems of personal identity and extending to related topics in the philosophy of mind and moral philosophy.

A computable structure $\mathcal {A}$ is $\mathbf {x}$-computably categorical for some Turing degree $\mathbf {x}$ if for every computable structure $\mathcal {B}\cong\mathcal {A}$ there is an isomorphism $f:\mathcal {B}\to\mathcal {A}$ with $f\leq_{T}\mathbf {x}$. A degree $\mathbf {x}$ is a degree of categoricity if there is a computable structure $\mathcal {A}$ such that $\mathcal {A}$ is $\mathbf {x}$-computably categorical, and for all $\mathbf {y}$, if $\mathcal {A}$ is $\mathbf {y}$-computably categorical, then $\mathbf {x}\leq_{T}\mathbf {y}$. We construct a $\Sigma^{0}_{2}$ set whose degree (...) is not a degree of categoricity. We also demonstrate a large class of degrees that are not degrees of categoricity by showing that every degree of a set which is 2-generic relative to some perfect tree is not a degree of categoricity. Finally, we prove that every noncomputable hyperimmune-free degree is not a degree of categoricity. (shrink)

When “divided attention” methods were discovered in the 1950s their implications for conscious experience were not widely appreciated. Yet when people process competing streams of sensory input they show both selective processesandclear contrasts between conscious and unconscious events. This paper suggests that the term “attention” may be best applied to theselection and maintenanceof conscious contents and distinguished from consciousness itself. This is consistent with common usage. The operational criteria for selective attention, defined in this way, are entirely different from those (...) used to assess consciousness. To illustrate the scientific usefulness of the distinction it is applied to Posner's brain model of visual attention. It seems that features that are often attributed to attention—like limited capacity—may more accurately be viewed as properties of consciousness. (shrink)

Whatever our profession we are all engulfed in daily life and in the obscurity and density of the mental world. Who is this “I” that finds expression in such a wide variety of societies, in the convictions of the group and temperament of the individual self, in all that I perceive imperfectly and that makes me me? What does this sometimes slippery, sometimes thorny “I” say about the various attitudes towards knowing: the things I desperately want to know, things I (...) believe myself capable of dispensing with, those I fear knowing? (shrink)

The self as the identification of the self with itself is a product of the dynamic transformation of European culture beginning in the Renaissance. The self, or absolute ego, was an outgrowth of the consciously rationalist spirit. However, modernity's Faustian drive was conscious paradoxically without being self conscious of itself or its cultural creations. Modernism deconstructed the values and assumptions of modernity. A casualty was the problematization of the self that had been banished and/or erased by formalism, structuralism and deconstruction. (...) The modernist self erases the absolute ego reconstructing it with a rich, complex, narrative idea of a self‐conscious relational self encompassing memory, repression, autobiography and history. This paper explores the modernist conception of self in Marcel Proust's In Search of Lost Time. Proust demolishes the absolute ego in favor of the paradoxical self which knows itself only in relation to otherness actualized in persons and culture in the sacred time of existence. (shrink)

Anderson and Csima :245–264, 2014) defined a jump operator, the bounded jump, with respect to bounded Turing reducibility. They showed that the bounded jump is closely related to the Ershov hierarchy and that it satisfies an analogue of Shoenfield jump inversion. We show that there are high bounded low sets and low bounded high sets. Thus, the information coded in the bounded jump is quite different from that of the standard jump. We also consider whether the analogue of the Jump (...) Theorem holds for the bounded jump: do we have A≤bTB\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$A \le _{bT}B$$\end{document} if and only if Ab≤1Bb\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$A^b \le _1 B^b$$\end{document}? We show the forward direction holds but not the reverse. (shrink)

Current thinking and research on consciousness and the brain.

Cet article étudie les principales classifications grecques anciennes des sciences mathématiques. Je souligne le rôle joué par Platon dans cette topique.

Let $D_{tt} $ denote the set of truth-table degrees. A bijection π: $D_{tt} \to \,D_{tt} $ is an automorphism if for all truth-table degrees x and y we have $ \leqslant _{tt} \,y\, \Leftrightarrow \,\pi (x)\, \leqslant _{tt} \,\pi (y)$ . We say an automorphism π is fixed on a cone if there is a degree b such that for all $x \geqslant _{tt} b$ we have π(x) = x. We first prove that for every 2-generic real X we have (...) X' $X' \le _{tt} \,X\, \oplus \,0'$ . We next prove that for every real $X \ge _{tt} \,0'$ there is a real Y such that $Y \oplus 0{\text{'}}\, \equiv _{tt} \,Y{\text{'}} \equiv _{tt} \,X$ . Finally, we use this to demonstrate that every automorphism of the truth-table degrees is fixed on a cone. (shrink)

No understanding of morality has more zealous or influential defenders among academic philosophers than Kant’s. Yet as Michael Rosen demonstrates in The Shadow of God, there is a sense in which Kant’s critics take his conception of freedom more seriously nowadays than his defenders. As a result, contemporary versions of “Kantian ethics” often end up challenging what Rosen calls “the ethics of Kant,” not just the claims of rival moral theories. Rosen supports this surprising conclusion with some powerful arguments, showing (...) that we cannot make sense of Kantian moral philosophy or its extraordinary impact on modern philosophy while detaching it from Kant’s conception of transcendental freedom. But Rosen overstates the continuity between Kant and the Idealist philosophers that he inspired. Thinkers like Schiller, Schelling, and Hegel took Kant’s concept of transcendental freedom far more seriously than defenders of Kantian ethics do today. But precisely because they did so, they felt compelled to address a whole new set of problems, which could be solved only by radically transforming the conception of freedom that they received from Kant. (shrink)

In this article the history of the attribution approach to emotion and motivation is reviewed. Early motivation theorists incorporated emotion within the pleasure/pain principle but they did not recognize specific emotions. This changed when Atkinson introduced his theory of achievement motivation, which argued that achievement strivings are determined by the anticipated emotions of pride and shame. Attribution theorists then suggested many other emotional reactions to success and failure that are determined by the perceived causes of achievement outcomes and the shared (...) characteristics or dimensions of causality. The article outlines the hypothesized dimensional antecedents of a number of self- and other-directed achievement-related emotions following success (admiration, apprehension, confidence, disliking, envy, gratitude, liking, pride, and surprise) and failure (anger, guilt, helplessness, hope, hopelessness, pity, regret, Schadenfreude, scorn, shame, surprise, and sympathy). Motivational consequences of emotions also are highlighted. (shrink)

ABSTRACT This paper reconsiders the arguments of my book, The Longing for Total Revolution, in response to the thoughtful analyses collected in this symposium. It restates the book’s main genealogical and critical arguments about the philosophical sources of uniquely modern forms of social discontent, while distinguishing those arguments from recent attempts to uncover the deeper, theological sources of discontent. It focuses, in particular, on the role played in modern social discontent by the group of thinkers I describe as the “Kantian (...) left”: a long line of social critics who sought to “realize” Kant’s understanding of human autonomy in society, thereby gaining what Marx called “control and conscious mastery” over our social world, not just over our wills. (shrink)

The world of our experience consists at all times of two parts, an objective and a subjective part . . . The objective part is the sum total of whatsoever at any given time we may be thinking of, the subjective part is the inner 'state' in which the thinking comes to pass.

This paper uses E. M. Forster’s novel Howards End to help articulate what I describe as a moral pluralist approach to moral conflict. Moral pluralism, I argue here, represents a way of responding to the moral conflicts we encounter in our lives, rather than the mere acknowledgment of their inevitability, as suggested by value pluralists like Isaiah Berlin. The tragic view of moral conflict epitomized by Sophocles’ Antigone and endorsed by most theories of value pluralism, tells us that we must (...) choose between moral commitments and reconcile ourselves to the moral regrets that inevitably follow from moral choice. The moral pluralist view, in contrast, suggests that we should seek means, however imperfect, of satisfying conflicting moral commitments and minimizing causes for moral regret. That view, I argue, drives the words and actions of Forster’s heroine in Howards End, Margaret Schlegel. Confronted with a battle between a willful patriarch and a self-righteous sister, a conflict that maps neatly onto the central conflict in Sophocles’ tragedy, Margaret refuses to take sides without refusing to make moral choices. And in doing so, she comes to exemplify an unexpected kind of moral heroism. (shrink)

Cette étude envisage les notions de sujet, d’individu et de personne dans une perspective d’anthropologie historique. La période considérée va de la disparition de l’Empire romain d’Occident à la mutation féodale, et son analyse est centrée sur la convergence de la culture savante – c’est-à-dire chrétienne – avec ce que nous pouvons savoir de la culture populaire à propos des trois notions précitées. Inaugurée par saint Augustin dans ses Confessions, l’émergence de la notion de personne coïncide avec l’oblitération du sujet (...) dans le De Trinitate de l’évêque d’Hippone. Cette conception rejoint celle du corps grotesque qui traverse la culture populaire de cette époque. Quant à l’individu, il n’apparaît durant toute la période considérée que sous la forme de l’individu particulier dans le cadre d’une individualité de types, et non sous celle de l’individu singulier propre à notre modernité. (shrink)

A real X is defined to be relatively c.e. if there is a real Y such that X is c.e.(Y) and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${X \not\leq_T Y}$$\end{document}. A real X is relatively simple and above if there is a real Y (...) nonempty \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\Pi^0_1}$$\end{document} class contains a member which is not relatively c.e. and that every 1-generic real is relatively simple and above. (shrink)