A set A is symmetric enumeration (se-) reducible to a set B (A ≤\sb se B) if A is enumeration reducible to B and \barA is enumeration reducible to \barB. This reducibility gives rise to a degree structure (D\sb se) whose least element is the class of computable sets. We give a classification of ≤\sb se in terms of other standard reducibilities and we show that the natural embedding of the Turing degrees (D\sb T) into the enumeration degrees (D\sb e) (...) translates to an embedding (ι\sb se) into D\sb se that preserves least element, suprema, and infima. We define a weak and a strong jump and we observe that ι\sb se preserves the jump operator relative to the latter definition. We prove various (global) results concerning branching, exact pairs, minimal covers, and diamond embeddings in D\sb se. We show that certain classes of se-degrees are first-order definable, in particular, the classes of semirecursive, Σ\sb n ⋃ Π\sb n, Δ\sb n (for any n \in ω), and embedded Turing degrees. This last result allows us to conclude that the theory of D\sb se has the same 1-degree as the theory of Second-Order Arithmetic. (shrink)

We investigate and extend the notion of a good approximation with respect to the enumeration ${({\mathcal D}_{\rm e})}$ and singleton ${({\mathcal D}_{\rm s})}$ degrees. We refine two results by Griffith, on the inversion of the jump of sets with a good approximation, and we consider the relation between the double jump and index sets, in the context of enumeration reducibility. We study partial order embeddings ${\iota_s}$ and ${\hat{\iota}_s}$ of, respectively, ${{\mathcal D}_{\rm e}}$ and ${{\mathcal D}_{\rm T}}$ (the Turing degrees) into (...) ${{\mathcal D}_{\rm s}}$ , and we show that the image of ${{\mathcal D}_{\rm T}}$ under ${\hat{\iota}_s}$ is precisely the class of retraceable singleton degrees. We define the notion of a good enumeration, or singleton, degree to be the property of containing the set of good stages of some good approximation, and we show that ${\iota_s}$ preserves the latter, as also other naturally arising properties such as that of totality or of being ${\Gamma^0_n}$ , for ${\Gamma \in \{\Sigma,\Pi,\Delta\}}$ and n > 0. We prove that the good enumeration and singleton degrees are immune and that the good ${\Sigma^0_2}$ singleton degrees are hyperimmune. Finally we show that, for singleton degrees a s < b s such that b s is good, any countable partial order can be embedded in the interval (a s, b s). (shrink)

We prove that for every ${\mathrm{\Sigma }}_{2}^{0}$ enumeration degree b there exists a noncuppable ${\mathrm{\Sigma }}_{2}^{0}$ degree a > 0 e such that b′ ≤ e a′ and a″ ≤ e b″. This allows us to deduce, from results on the high/low jump hierarchy in the local Turing degrees and the jump preserving properties of the standard embedding l: D T → D e , that there exist ${\mathrm{\Sigma }}_{2}^{0}$ noncuppable enumeration degrees at every possible—i.e., above low₁—level of the high/low (...) jump hierarchy in the context of D e. (shrink)

Defining a class of sets to be uniform Δ02 if it is derived from a binary {0,1}{0,1}-valued function f≤TKf≤TK, we show that, for any C⊆DeC⊆De induced by such a class, there exists a high Δ02 degree c which is incomparable with every degree b ϵ Ce \ {0e, 0'e}. We show how this result can be applied to quite general subclasses of the Ershov Hierarchy and we also prove, as a direct corollary, that every nonzero low degree caps with both (...) a high and a nonzero low Δ02 degree. (shrink)

We discuss a notion of forcing that characterizes enumeration 1-genericity, and we investigate the immunity, lowness, and quasiminimality properties of enumeration 1-generic sets and their degrees. We construct an enumeration operator Δ such that, for any A, the set ΔA is enumeration 1-generic and has the same jump complexity as A. We deduce from this and other recent results from the literature that not only does every degree a bound an enumeration 1-generic degree b such that a'=b', but also that, (...) if a is nonzero, then we can find such b satisfying 0eshrink)

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Philosophy 41.4 (2003) 561-562 [Access article in PDF] Gianni Paganini, Miguel Benítez, and James Dybikowski, editors. Scepticisme, Clandestinité et Libre Pensée. Paris: Honoré Champion, 2002. Pp. 382. Cloth, €60.00. This book consists of papers from two Tables rondes held in Dublin in 1999 on the occasion of the Tenth International Congress on the Enlightenment. The contributors are: Paganini, Benítez, Dybikowski, Alan Charles Kors, (...) Winfried Schröder, José R. Maia Neto, Adam Sutcliffe, Justin Champion, Antony McKenna, Lorenzo Bianchi, Christine Berkvens-Stevelinck, Pierre Lurbe, Stephen David Snobelen, Nigel Aston, and Stuart Brown. There is remarkably little overlap among the papers and Paganini has clearly insisted on very [End Page 561] high standards. Because of space limitations, I shall focus on several of the general themes which run through the book rather than on individual contributions.Despite the phenomenal success Richard Popkin and collaborators like the late Charles B. Schmitt, Giorgio Tonelli, and Ezequiel de Olaso have had in documenting the amazing impact of skepticism in the Renaissance and in the years up to the Enlightenment, this volume demonstrates that skepticism, that many-faceted force, continued throughout the eighteenth-century Enlightenment. After Bayle, and the application of his special forms of skepticism to theological topics—forms which were often employed, contrary to Bayle's probable intentions, in defense of atheism—skepticism went "underground." A large variety of literature was circulated in manuscript form, the clandestine literature of the period. The lesson which this conference celebrates is that skepticism did not cease being a major cultural force. Thus there is, thanks to the philosophical dimension of the clandestine literature in the eighteenth century, a transition from Christian rationalism to an anti-Christian rationalism.Major figures of the Enlightenment were, of course, well-acquainted with skepticism, e.g., Berkeley, Voltaire, Hume, Crousaz, Condillac, Reid, and Kant. Not surprisingly, the major topics discussed in these papers center around skepticism, fideism and atheism, proofs for the existence of God, and the status of the "preambles" to the faith. These all receive careful attention. The tension between the arguments for Christian Pyrrhonism versus anti-Christian rationalism runs through many of these papers. And of course Bayle's points of view on both sides of the Christian debate appear in much of the clandestine literature. The matter of the immortality of the soul is carefully discussed. What is the status of this doctrine? Is it a question of Church dogma or is it another belief to be discarded in the light of reason?The connection perceived to hold between atheism and political legitimacy are explored in several papers. In the seventeenth century, Locke would exclude atheists from the body politic, in part because they were unable to truthfully swear an oath. Atheists were perceived as a danger for many eighteenth-century figures and the political need to suppress atheism was widely understood and accepted by those in the various religious establishments. Bayle's two-century-old attempt to break the putative logical tie between morality and religion failed in his own day, and despite the efforts of the authors of clandestine philosophical literature, the intimate link Bayle tried to break seems to be stronger than ever in much of the world today. It is interesting that the United States is virtually the only industrial and democratic society in which atheists are virtually precluded from being political candidates in federal, and probably most local, elections. Among other things, the papers in this volume help one to understand just how difficult breaking free from theological constraints in the interest of political freedom has proved to be. Harry McFarland Bracken Arizona State University, Tempe... (shrink)

The psychiatrist, Dr. Charles B. Nemeroff of Emory University, is the most prominent example to date in a series of disclosures that is shaking the world of academic medicine and seems likely to force broad changes in the relationships between doctors and drug makers.

In lieu of an abstract, here is a brief excerpt of the content:Learning to BreatheFive Fragments Against RacismB. Venkat Mani (bio)For Dr. JLW, for all Black academics and students1. Air HungerI know you, Derek Chauvin. You may think that we first met on May 25, 2020, in Minneapolis. I was called George Perry Floyd. For you, I was just another Black man, a potential criminal. For me, you were not a police officer, but the knee that stands for racism. You (...) kneeled on my windpipe for 9 minutes and 29 seconds. Those were neither my first nor my last memories.You may choose not to recognize me, as you always have. But I do. I recognize every bone, muscle, tendon, pointy curve of the cap, every contour of your strong, heavy, determined, calculating, conniving knee that presses on my windpipe with a false sense of racist superiority. 9 minutes and 29 seconds. As often as you can.We have a history. You have never missed the opportunity of kneeling on my windpipe. You hauled me into your slave ships from various African ports along the Atlantic, then you kneeled on my windpipe all over your cotton and tobacco plantations in the Americas. We met again on schooners from Indian shores journeying across the Indian and Pacific oceans. With slavery banned in the British empire, you turned me into an indentured laborer. You made me put my thumb imprint on a document you created, in a script I could not read, of a language I could not speak. Then you threw me thousands of miles away in Mauritius, Fiji, and numerous Caribbean islands, pressing on my windpipe on sugarcane plantations. My wife, children, sisters, mothers, aunts, brothers, uncles, nephews, nieces, grandparents, great grandparents, we all have lived through those fatal 9 minutes and 29 seconds: on water and land. Repeatedly. Consistently. Incessantly.You want specific dates? April 8, 1857, Barrackpore, Northern India. My name was Mangal Pandey, you called me a Sepoy. You hanged me for standing up against my subjugation by your British East India Company. Against your rule over my land and my people. With your many titles [End Page 41] and names: Major-General Sir Henry Havelock, Lieutenant-General Sir Colin Campbell, Brigadier-General Charles Windham, you rampaged through the streets of Delhi, Meerut, Lucknow, killing anyone in your way so I could be a jewel in Victoria's crown. January 29, 1863, Bear River, Idaho. I was one among the Shoshone of Bia Ogoi, you were Colonel Patrick Connor. You came to us on a frigid morning and killed us by the hundreds. November 15, 1884, the Congo Conference, Berlin. You were called Chancellor Otto von Bismarck and were acting at the behest of sharecropping interests of King Leopold the Second. Your name for me was a "savage." You set up a society to civilize me while you plundered my bounty. You started drawing lines through land, rivers, mountains, deserts. For you, it was the Scramble for Africa. For me, bloody murder. You knelt on my windpipe, smoking a pipe with tobacco my people had grown. April 13, 1919, Jallianwala Bagh, Amritsar. You were called Brigadier General Reginald Edward Harry Dyer. For you, I was just a troublemaking native disrupting the civilized business of the Empire. You surrounded our peaceful gathering in Amritsar and opened fire. Your Nobel Laureate Rudyard Kipling claimed that "you did your duty as you saw fit." By killing us in thousands until the bullets ran out. Rikki Tikki Tavi. May 31, 1921, Tulsa, Oklahoma. Inspired by Jim Crow, your knees came running to us in mobs to massacre us. October 19, 1926, Imperial Conference, London. Your name was Field Marshall the Right Honorable Jan Christian Smuts. For you, I was one among the many "colored" subjects from the Cape Colony. You spoke vehemently against mixing my people with your people. Eloquently, I was told, in favor of apartheid.You know very well, Chauvin, that our acquaintance neither begins in 1857 nor ends in 1926. I could take you on a grand tour of the world and give you all the dates when you appeared in different forms. Your self-induced conviction of racial supremacy over me remained the same... (shrink)

Stone & Wang collate the nascent research examining the mnemonic consequences associated with social media use. In particular, they highlight two important factors in understanding how social media use shapes the way individuals and groups remember the past: the type of information (personal vs. public) and the role (producer vs. consumer) individuals undertake when engaging with social media. Stone and Wang investigate those two features in relation to induced forgetting for personal information and false memories/truthiness for public information.

As originally planned this volume was meant to cover a somewhat wider scope than, in fact, it has turned out to do. When, in rg68, I initially conceived of preparing it, it was proposed to deal with several aspects of early modern scepticism, in addition to the fortuna of the Academica, and to publish various loosely related pieces under the title of 'Studies in the History of Early Modern Scepticism. ' Thereby, I foresaw that I would exhaust my knowledge of (...) the subject and would then be able to turn my attention to other matters. In initiating my research on this topic, however, I soon found that there remained a much greater bulk of material to study than could possibly be dealt with between the covers of the single modest volume which I envisioned. My proposed section on Cicero's Academica was to cover between 50 and 75 pages in the original plan. It soon became apparent, however, especially after Joannes Rosa's hitherto unstudied commentary on Cicero's work was uncovered, that this material would have to be treated at a much greater length than I had foreseen. The present volume is the result of this expanded investigation. The monograph which has come from this alteration in plans has, I think, the virtues of continuity and cohesive ness and one hopes that these advantages offset the benefits of a broader scope which were sacrificed. (shrink)

This cogent essay explores a hitherto unstudied aspect of Renaissance intellectual history and refines our understanding of the impact of Greek philosophy on Western thought. It is generally recognized that Aristotle was a touchstone for the learned world in the Middle Ages. Charles Schmitt shows here that what happened in the following centuries was not a mere continuation of the medieval tradition but a vital new development, influenced by the ideas of this era of ferment. He samples the response (...) to Aristotle during the Renaissance, viewing the writings of Catholics and Protestants, humanists, scholastics, and scientists; he surveys the different kinds of works from which Renaissance readers learned their Aristotle; and he looks at the extent to which Aristotelians assimilated other modes of thought in the fifteenth, sixteenth, and early seventeenth centuries. Schmitt's analysis offers intellectual historians a corrected picture of this important period. (shrink)

Arguably the most influential of all contemporary English-speaking philosophers, Richard Rorty has transformed the way many inside and outside philosophy think about the discipline and the traditional ways of practising it. Drawing on a wide range of thinkers from Darwin and James to Quine, Wittgenstein, Heidegger and Derrida, Rorty has injected a bold anti-foundationalist vision into philosophical debate, into discussions in literary theory, communication studies, political theory and education, and, as public intellectual, into national debates about the responsibilities of America (...) in the modern world. The essays in this volume offer a balanced exposition and critique of Rorty's views on knowledge, language, truth, science, morality and politics. The editorial introduction presents a valuable overview of Rorty's philosophical vision. Written by a distinguished team of philosophers, this volume will have an unusual appeal outside philosophy to students in the social sciences, literary studies, cultural studies and political theory. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:NOTES AND DISCUSSIONS 69 in pre-Socratic scholarship. But he does not do justice to the religious mood which pervades the whole poem (a mood which is set by the prologue which casts the whole work into the form of some kind of religious revelation). The prologue is considerably more than a mere literary device, and the poem is more than logic. Generally, Jaeger9 and Guthrie are surely correct in (...) their judgment that any adequate interpretation of Parmenides' work (as well as that of the other early Greek thinkers) must be willing to take into account its essentially theological character and religious inspirationl~ not always grasped through strict analysis and exegesis. g Theolooy of the Early C-reekPhilosophers, trans. Edward S. Robinson (Oxford, 1947), p. lff, 90ft. agCf. Guthrie's excellent statement: "...Parmenides was at one with Heraclitus in claiming a prophetic or apocalyptic authority for his teaching." And again, the Greeks believed in "an inspiration whereby-the poet is granted deeper insight into the truth than other men" (p. 6). ED. L. MILLER University of Colorado AN UNKNOWN SEVENTEENTH-CENTURY FRENCH TRANSLATION OF SEXTUS EMPIRICUS* I. Introduction Included in a collection of manuscripts and early printed books recently acquired by the Library of the University of California, Los Angeles, from the Paris bookdealer Paul Jammes ~ are three manuscripts attributed to a certain Nicolas de la Toison, Baron de Bussy. Two of the three volumes contain extensive Latin commentaries on the major writings of Aristotle.2 The third is a miscellaneous volume written in three different hands, which contains, among other things, a complete French translation of the extant writings of Sextus Empiricus (c. A.D. 160-210).3 I * I would like to express my thanks to Mr. Richard O'Brien, Western European Bibliographer of the UCLA Library, for his help in numerous ways, who made it possible for me to consult this material during my sojourn in Los Angeles, even before it had been officially catalogued by the Library. I would also like to thank Professors Donald Kalish and Robert Yost of the UCLA Department of Philosophy for their support in making it possible for the collection to be purchased. 1For a brief description of the collection as a whole see Charles B. Schmitt, "Acquisition of Early French Books and Manuscripts", UCLA Librarian, XIX (1966)~25. 2These two manuscripts are bound m red leather with gold tooling. Thear present shelf mark is Collection 968, Box 2. On the spines is written: (1) PHILOSOPHIA.TO.I, and (2) METAPHYSIC ET PHYSICA TO.2. They measure approximately 10 X 14 cm. and each contains about 600fois. At the beginning of Vol. I, in a later hand (19th century?), we read: "Nicolas de la Thoison, baron de Bussy, qui 6crivit ces m6moires, 6tait conseiller laic au Parlement de Bourgogne. Il fur pourru par la r6signation de Pierre Catherine le IV Ddcembre M.DC.XLV et regu le XXIX janvier M.DC.XLVI. I1portait: de queueles dune bands d'or charges en coeur d'une quints feuiUe d'azur--ainsi qu'on le volt dans le Parlement de Bourgogne [Dijon, 1649]de Pierre PaiUot, p. 326." There is also a drawing of the coat-of-arms which has been described. That the de la Toison coat-of-arms is a quintefeuille is verified by Theodore de Renesse, Dictionnaire des figures h$raldiques (Brussels, 1894-1903) III, 461. The passage cited above from the manuscript is directly quoted from Pierre Paillot, Le Parlement de Bouroongne [I], son origins, son $tablissemerit, et son progr~s (Dijon, 1649), p. 326. s A description of this manuscript will be found in the Appendix. 70 HISTORY OF PHILOSOPHY shall here only give a preliminary survey of this third manuscript, pointing out some of the more interesting features and mentioning some problems connected with it which should be investigated further in more detail. As is now well-known the writings of Sextus Empiricus, which form the major extant compendium of ancient skeptical philosophy, had quite a significant impact on sixteenth and seventeenth-eentury thought, after their reintroduction in the sixteenth century. ~ Sextus' works were available in printed Latin editions after 15695 and the Greek text was printed in... (shrink)

IN his recent book on Heidegger's concept of authenticity, Eclipse of the Self, Michael Zimmerman points out Heidegger's life-long attempt to link the theoretical-ontological questions of traditional philosophy with the personal-existential issues of everyday life. The aim of grounding the "question of Being" in a deeper, more authentic way of being human is most strikingly evident in Being and Time. There the seemingly most abstract of all metaphysical questions--What is the meaning of Being?--is posed in terms of the most intensely (...) personal question facing any individual--What is the meaning of human existence? To answer the former question appropriately, Heidegger claims, we must transform our approach to the latter. And this in turn requires a radical alteration in the quality of our lives. Despite Heidegger's insistence that his ontological findings have no evaluative import, the exhortative tone of the account of authenticity is unmistakable. He quotes with full approval Count Yorck's description of his own philosophy: "The practical aim of our standpoint is pedagogical in the broadest sense of the word". Its goal is "to make possible the cultivation of individuality". Emerging out of an age that perceived itself as a time of profound crisis, a period shaken by intellectual currents of relativism, scientific materialism, Darwinism, and the complete secularization of life, Being and Time attempts to combat the "groundlessness" of the contemporary world by uncovering enduring values and meanings within the framework of "worldliness" and human finitude. The "question of Being" is no exercise in arcane speculation; its aim is to restore a sense of the gravity and responsibility of existence by recovering a more profound grasp of what it is to be. (shrink)

Current views of the control of complex, purposeful movements acknowledge that organizational processes must reconcile multiple concerns. The central priority is of course accomplishing the actor's goal. But in specifying the manner in which this occurs, the action plan must accommodate such factors as the interaction of mechanical forces associated with the motion of a multilinked system (classical mechanics) and, in many cases, intrinsic bias toward preferred movement patterns, characterized by so‐called “coordination dynamics.” The most familiar example of the latter (...) is the symmetry constraint, where spatial trajectories and/or temporal landmarks (e.g., reversal points) of concurrentlymoving body segments (limbs, digits, etc.) exhibit mutual attraction. The natural coordination tendencies that emerge through these constraints can facilitate or hinder motor control, depending on the degree of congruency with the desired movement pattern. Motor control theorists have long recognized the role of classical mechanics in theories of movement organization, but an appreciation of the importance of intrinsic interlimb bias has been gained only recently.Although detailed descriptions of temporal coordination dynamics have been provided, systematic attempts to identify additional salient dimensions of interlimb constraint have been lacking. We develop and implement here a novel method for examining this problem by exploiting two robust principles of psychomotor behavior, the symmetry constraint and the Two‐Thirds Power Law. Empirical evidence is provided that the relative spatial patterns of concurrently moving limbs are naturally constrained in much the same manner as previously identified temporal constraints and, further, that apparent velocity interference is an indirect, secondary consequence of primary spatial assimilation. The theoretical implications of spatial interference are elaborated with respect to movement organization and motor learning. The need to carefully consider the appropriate dimensions with which to characterize coordination dynamics is also discussed. (shrink)

Echoes of a philosophy -- Strategic considerations -- Cultural evolution -- Communication -- A cultural technology -- Unique function of the library -- Stewardship of the social transcript -- Sounding for the embedded philosophy.

Since testing for HIV infection became possible in 1985, testing of pregnant women has been conducted primarily on a voluntary, ‘opt-in’ basis. Faden, Geller and Powers, Bayer, Wilfert, and McKenna, among others, have suggested that with the development of more reliable testing and more effective therapy to reduce maternal-fetal transmission, testing should become either routine with ‘opt-out’ provisions or mandatory. We ask, in the light of the new rapid tests for HIV, such as OraQuick, and the development of antiretroviral treatment (...) that can reduce maternal-fetal transmission rates to <2%, whether that time is now. Illustrating our argument with cases from the United States (US), Kenya, Peru, and an undocumented Mexican worker in the US, we show that when testing is accompanied by assured multi-drug therapy for the mother, the argument for opt-out or mandatory testing for HIV in pregnancy is strong, but that it is problematic where testing is accompanied by adverse events such as spousal abuse or by inadequate intrapartum or follow-up treatment. The difference is not a ‘double standard’, but reflects the presence of conflicts between the health interests of the mother and the fetus – conflicts that would be abrogated by the assurance of adequate, continuing multi-drug therapy. In light of these conflicts, where they still occur, careful processes of informed consent are appropriate, rather than opt-out or mandatory testing. (shrink)

Bernstein's attempt to identify a convergence in the ethical and political implications of the writings of Gadamer and Rorty is found to be inadequate on two counts. First, by accepting the extreme antifoundationalism in Rorty, Bernstein tends to undermine the humanistic ideals he wishes to defend. And, second, the important differences in the conception of history in Gadamer and Rorty are concealed. It is argued that Gadamer's view of 'effective-history' offers a basis for enduring values which would not be possible (...) given Rorty's conception of history. (shrink)

Peter Gärdenfors has proved (Philosophical Review, 1986) that the Ramsey rule and the methodologically conservative Preservation principle are incompatible given innocuous-looking background assumptions about belief revision. Gärdenfors gives up the Ramsey rule; I argue for preserving the Ramsey rule and interpret Gärdenfors's theorem as showing that no rational belief-reviser can avoid reasoning nonmonotonically. I argue against the Preservation principle and show that counterexamples to it always involve nonmonotonic reasoning. I then construct a new formal model of belief revision that does (...) accommodate nonmonotonic reasoning. (shrink)

In Practical Ethics Peter Singer argues for an ‘obligation to assist’: First premise: If we can prevent something bad without sacrificing anything of comparable significance, we ought to do it. Second premise: Absolute poverty is bad. Third premise: There is some absolute poverty we can prevent without sacrificing anything of comparable moral significance. Conclusion: We ought to prevent some absolute poverty. This paper is dedicated to a criticism of four readings of the first premise and an undesirable link the first (...) premise has with the third. The paper ends by offering a alternative formulation of an ‘obligation to assist,’ which suffers from none of these problems. (shrink)