Optimal foraging theory has been criticized for underestimating patch exploitation time. However, proper modeling of costs not only answers these criticisms, but it also explains apparently irrational behaviors like the sunk-cost effect. When a forager is sure to experience high initial costs repeatedly, the forager should devote more time to exploitation than searching in order to minimize the accumulation of said costs. Thus, increased recognition or reconnaissance costs lead to increased exploitation times in order to reduce the frequency of future (...) costs, and this result can be used to explain paradoxical human preference for higher costs. In fact, this result also provides an explanation for how continuing a very costly task indefinitely provides the optimal long-term rate of gain; the entry cost of each new task is so great that the forager avoids ever returning to search. In general, apparently irrational decisions may be optimal when considering the lifetime of a forager within a larger system. (shrink)

Chronologically sequenced chapter units give an overall historical perspective in this text on ethics, while chapter introductions include biographical, historical and other information.

Surgical expertise does not have a clear definition and is often culturally associated with power, authority, prestige, and case number rather than more objective proxies of excellence. Multiple models of expertise progression have been proposed including the Dreyfus model, however, they all currently require subjective evaluation of skill. Recently, efforts have been made to improve the ways in which surgical excellence is measured and expertise is defined using artificial intelligence, video recordings, and accelerometers. However, these aforementioned methods of assessment are (...) still subjective or indirect proxies of expertise, thus uncovering the neural mechanisms that differentiate expert surgeons from trainees may enhance the objectivity of surgical expertise validation. In fact, some researchers have already suggested that their neural imaging-based expertise classification methods outperform currently used methods of surgical skill certification such as the Fundamentals of Laparoscopic Surgery scores. Such imaging biomarkers would not only help better identify the highest performing surgeons, but could also improve residency programs by providing more objective, evidence-based feedback and developmental milestones for those in training and perhaps act as a marker of surgical potential in medical students. Despite the potential advantages of using neural imaging in the assessment of surgical expertise, this field of research remains in its infancy. This systematic review identifies studies that have applied neuromonitoring in assessing surgical skill across levels of expertise. The goals of this review are to identify the strongest neural indicators of surgical expertise, the limitations of the current literature on this subject, the most sensible future directions for further study. We found substantial evidence that surgical expertise can be delineated by differential activation and connectivity in the prefrontal cortex across multiple task and neuroimaging modalities. Specifically, novices tend to have greater PFC activation than experts under standard conditions in bimanual and decision-making tasks. However, under high temporal demand tasks, experts had increased PFC activation whereas novices had decreased PFC activation. Common limitations uncovered in this review were that task difficulty was often insufficient to delineate between residents and attending. Moreover, attending level involvement was also low in multiple studies which may also have contributed to this issue. Most studies did not analyze the ability of their neuromonitoring findings to accurately classify subjects by level of expertise. Finally, the predominance of fNIRS as the neuromonitoring modality limits our ability to uncover the neural correlates of surgical expertise in non-cortical brain regions. Future studies should first strive to address these limitations. In the longer term, longitudinal within-subjects design over the course of a residency or even a career will also advance the field. Although logistically arduous, such studies would likely be most beneficial in demonstrating effects of increasing surgical expertise on regional brain activation and inter-region connectivity. (shrink)

At long last a comprehensive tool in English for a better understanding of the most basic terms in Aristotle's philosophy. A careful comparison of the original Greek, medieval and renaissance Latin translations and a reappraisal of English usage make the work a definitive source for the precise grasp of what has been the historical Aristotle as far as the documents permit one to judge. -- provided by the publisher.

One often hears a complaint about “bare particulars”. This complaint has bugged me for years. I know it bugs others too, but no one seems to have vented in print, so that is what I propose to do. (I hope also to say a few constructive things along the way.) The complaint is aimed at the substratum theory, which says that particulars are, in a certain sense, separate from their universals. If universals and particulars are separate, connected to each other (...) only by a relation of instantiation, then, it is said, the nature of these particulars becomes mysterious. In themselves, they do not have any properties at all. They are nothing but a pincushion into which universals may be poked. They are Locke’s “I know not what” (1689, II, xxiii, §2); they are Plato’s receptacles (Timaeus 48c–53c); they are “bare particulars”.1 Against substratum theory there is the bundle theory, according to which particulars are just bundles of universals. The substratum and bundle theories agree on much. They agree that both universals and particulars exist. And they agree that a particular in some sense has universals. (I use phrases like ‘particular P has universal U ’ and ‘particular P ’s universals’ neutrally as between the substratum and bundle theories.) But the bundle theory says that a particular is exhaustively composed of (i.e., is a mereological fusion of) its universals. The substratum theory, on the other hand, denies this. Take a particular, and mereologically subtract away its universals. Is anything left? According to the bundle theory, no. But according to the substratum theory, something is indeed left. Call this remaining something a thin particular. The thin particular does not contain the universals as parts; it instantiates them. (shrink)

While many are impressed with the utility of possible worlds in linguistics and philosophy, few can accept the modal realism of David Lewis, who regards possible worlds as sui generis entities of a kind with the concrete world we inhabit.1 Not all uses of possible worlds require exotic ontology. Consider, for instance, the use of Kripke models to establish formal results in modal logic. These models contain sets often regarded for heuristic reasons as sets of “possible worlds”. But the “worlds” (...) in these sets can be anything at all; they can be numbers, or people, or sh. The set of worlds, together with the accessibility relation and the rest of the model, is used as a purely formal structure.2 One can even go beyond establishing results about formal systems and apply Kripke models to English, as Charles Chihara has recently argued.3 Chihara shows, for instance, how to use Kripke models (plus primitive modal notions) to give an account of validity for English modal sentences. In other cases worlds are not really needed at all. It is often vivid to give a counterexample thus: “There is a possible world in which P. Since your theory implies that in all worlds, not-P, your theory is wrong.” But the counterexample could just as easily be given using modal operators: “Possibly, P. Since your theory implies that it is necessary that not-P, your theory is wrong.”. (shrink)

"Early in the 1960s Adorno gave four courses of lectures on the road leading to Negative Dialectics, his magnum opus of 1966. The second of these was concerned with the topics of history and freedom. In terms of content, these lectures represented an early version of the chapters in Negative Dialectics devoted to Kant and Hegel. In formal terms, these were improvised lectures that permit us to glimpse a philosophical work in progress." -- Cover, p. [4].

Using four principles common to several theories about possible worlds, It is argued that the necessary existence of a divine being that is essentially omnipotent, Omniscient, And morally perfect is impossible. The central argument employs the premise that there are possible worlds that any divine being ought not to actualize (because of their evil contents). This premise is then defended on the grounds that the same sort of justification that we give for other modal statements that we accept can be (...) given for modal statements which entail the premise. It is concluded that we must reject the guiding principle that gives rise to the traditional theistic concept, Viz., That if a property p of an individual is an excellence of it and hence its having p is good, Then its having p necessarily or essentially is better. (shrink)

The paper examines the personalization of information technology from the p.c. onwards to the 3-D printing and mobile technologies in order to show that the current process of technological evolution puts the human personality in the centre of its functionality. This new centre opens the discussion about authenticity and in-authenticity of human Dasein, since the common element of these new technologies is that they employ faciality and personalization in a new condition of ready-to-hand and present-at-hand mode. By applying the Heideggerian (...) modes of being on the process of personalization new forms of digital ethics appear. I suggest that the above take place in the navigation memory of the net, in the creativity of the self through the 3-D printer, and in the localization of the “psyche” in the hard drive disk. The paper defends the possibilities of an ethical, authentic and sheltering personalization, where human beings and information technology responsibly engage. (shrink)

Schweppenhauser, H. Quelques exemples de critiques adressées à Adorno.--Bellasi, P. Le bébé avec l'eau du bain.--Höhn, G. Une logique de la décomposition.--Jimenez, M. Théorie critique et théorie de l'art.--Baučar, E. L'esthétique comme anthropologie.--Revault d'Allonnes, O. Adorno non adorno.--Makarius, M. I. Adorno et le viol de la médiation.--Ladmiral, J. R. Adorno contra Heidegger.--Naggar, C. John Heartfield, dada-monteur.--Noguez, D. Jean Mitry et le cinéma expérimental.--S., E. In memoriam Jacques Duron.--Revault d'Allonnes, O. L'Institut d'esthétique s'installe 162, rue Saint-Charles à Paris XVe.--Saison, M. Étude (...) critique d'une création théâtrale. (shrink)

Let us consider that version of the Argument from Design which appeals to the so called "fine tuning" of the physical constants of the universe. Call it "the Fine tuning Argument." It has many advocates, both on the Internet and in print. For some of the Internet articles, see the following web site: http://www.reasons.org/resources/papers/>. One of the argument's "print" advocates is George Schlesinger, who says the following: In the last few decades a tantalizingly great number of exceedingly rare coincidences, vital (...) for the existence of a minimally stable universe and without which no form of life could exist anywhere, have been discovered. . . . [G]iven any one of infinitely many universes, some conjunction or other of physical magnitudes will have to obtain. However, the prevailing conjunction is not merely one of indefinitely many; it is also an instance of a virtually infinitesimally rare kind of universe: the kind capable of sustaining life. The hypothesis that it was produced by a Being interested in sentient organic systems adequately explains this otherwise inexplicably astonishing fact. NEW PERSPECTIVES ON OLD TIME RELIGION, Oxford U.P., 1988, pp. 130,133] A more precise formulation of the argument is the following, with premises indicated by "P" and conclusions indicated by "C": (P1) The combination of physical constants that we observe in our universe is the only one capable of sustaining life as we know it. (P2) Other combinations of physical constants are conceivable. (shrink)

Let A and B be subsets of the reals. Say that A κ ≥ B, if there is a real a such that the relation "x ∈ B" is uniformly Δ 1 (a, A) in L[ ω x,a,A 1 , x,a,A]. This reducibility induces an equivalence relation $\equiv_\kappa$ on the sets of reals; the $\equiv_\kappa$ -equivalence class of a set is called its Kleene degree. Let K be the structure that consists of the Kleene degrees and the induced partial order (...) K ≥. A substructure of K that is of interest is P, the Kleene degrees of the Π 1 1 sets of reals. If sharps exist, then there is not much to P, as Steel [9] has shown that the existence of sharps implies that P has only two elements: the degree of the empty set and the degree of the complete Π 1 1 set. Legrand [4] used the hypothesis that there is a real whose sharp does not exist to show that there are incomparable elements in P; in the context of V = L, Hrbacek has shown that P is dense and has no minimal pairs. The Hrbacek results led Simpson [6] to make the following conjecture: if V = L, then p forms a universal homogeneous upper semilattice with 0 and 1. Simpson's conjecture is shown to be false by showing that if V = L, then Godel's maximal thin Π 1 1 set is the infimum of two strictly larger elements of P. The second main result deals with the notion of jump in K. Let A' be the complete Kleene enumerable set relative to A. Say that A is low-n if A (n) has the same degree as $\varnothing^{(n)}$ , and A is high-n if A (n) has the same degree as $\varnothing^{(n + 1)}$ . Simpson and Weitkamp [7] have shown that there is a high (high-1) incomplete Π 1 1 set in L. They have also shown that various other Π 1 1 sets are neither high nor low in L. Legrand [5] extended their results by showing that, if there is a real x such that x # does not exist, then there is an element of P that, for all n, is neither low-n nor high-n. In § 2, ZFC is used to show that, for all n, if A is Π 1 1 and low-n then A is Borel. The proof uses a strengthened version of Jensen's theorem on sequences of admissible ordinals that appears in [7, Simpson-Weitkamp]. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:Art Subjects: Making Artists in the American UniversityTheodore GracykArt Subjects: Making Artists in the American University, by Howard Singerman. Berkeley, Los Angeles, London: University of California Press, 1999, 296 pp., $19.95 paper.Howard Singerman's Art Subjects is a study of the training of visual artists in American universities from 1912 to the present. More precisely, the book is an account of how two philosophies ofeducation have competed to inform (...) that training. At the outset, Singerman announces that the book explores a long-standing "struggle between vision and language" (p. 10) that culminates with a decisive privileging of language. The book mimics its putative subject in at least one interesting way. As it was for art and the training of American artists in the twentieth century (at least on Singerman's account of them), so it is with the book. Each moves from a practice grounded in objective reality to a jargon-ridden discourse that limits entry to anyone outside of its acutely self-regarding disciplinary field. Although the book's acknowledgments segment thanks one individual for demanding thatSingerman "come to a real conclusion" for the book, readers should note Singerman's subsequent admission that it may not have one. At times it even appears that Singerman goes out of his way to avoid drawing one.Art Subjects appears to have started life as Singerman's doctoral dissertation, but it only occasionally displays the dull by-the-numbers writing of such documents. The book has a clear organization and its numerous quotations are carefully documented. The overall argument is framed, beginning and end, with Singerman's autobiography of his own time as a university art student. It provides him with his framing question: if he has a M.F.A. in sculpture but never learned to sculpt, what does his professional degree signify? The answer is that it indicates that his work is no longer facile. He has progressed from the realm of the artist whose work is professional, displaying facility, to the stage where he is professional. He has progressed to the point where being an artist is theartist's true subject: "Artists are the subject of graduate school; they are both who and what is taught" (p. 3). If this progression is best indicated by an artist's lack of facility in producing works of art, that is the price of professionalism. In the post-World War II university, art training is "founded on the primacy of theory over practice" (p. 181). Yet the result is professionalism without a clear profession other than as an employee of the post-World War II university: the M.F.A. prepares artists for the university discipline of art. Citing Foucault, Singerman seems satisfied that artists have taken command of a theoretical field. Disciplinary boundaries are created and policed by its rules of professional discourse. At the same time, Singerman declares his intention to "use the concept of the discipline as it constrains and structures discourses to keep from having to judge whether or not art is a profession" (p. 201). He likewise mentions [End Page 119] but does not take any stand on the "putative decline of recent art" (p. 210). This ongoing refusal to judge deprives the book of potentially interesting conclusions. It also calls into question Singerman's repeated references to the "self-criticality" of the discipline.Singerman's neutrality might berefreshing were it not for his use of Foucault to introduce the notion that each new "proposition" within the disciplinary discourse represents progress in a "theoretical field," moving "knowledge" forward. Talking about art (and not, to be sure, talking all that much about specific works of art) and talking about being an artist may or may not represent progress. For instance, Singerman's early chaptersmake the case that the triumph of artistic modernism must be understood as a repudiation of a "female" aesthetic and even of women as artists. Singerman returns to the topic ofwomen artists only once, to note Griselda Pollock's approval of the entry of feminism into the academic discipline of art. Thus Singerman is silent on the question of whether progress is made when the number of women is... (shrink)

Die hier vorgelegten Untersuchungen nehmen ihren Aus­ gang von einem Problem, dem ich bereits in dem Vortrag "Berufsstudium und Allgemeinbildung" (1920) und dem Buche "Erkenntnis und Leben" (1923) nachgegangen bin: dem Pro­ blem nämlich, ob, inwieweit und in welchen Formen die Ar­ beit an und in der Wissenschaft der "Bildung" des ganzen Menschen dienen könne. Sie überschreiten den dort gezogenen Rahmen, indem sie sich vornehmlich mit dem Kreis von m e t a p y s h i s c h (...) e Fragestellungen n beschäftigen, der in den genannten Schriften gestreift, aber nicht als solcher in An­ griff genommen war. Insbesondere jene letzten Seinszusam­ menhänge, welche, nicht ohne Verschulden der beteiligten Fachwissenschaften, durch die vielerörterten und -beklagten Irrgänge des "Natur a 1 i s m s" u wie des sogenannten "H i­ s t o r i s m s" u verdunkelt worden sind und immer noch ver­ dunkelt werden, sollen hier in der grundsätzlichen, d. i. w i s­ s e n s c h a ich- f t 1 philosophischen Form behandelt werden, der sich die einschlägigen Erörterungen nur allzu oft zum Schaden der Sache entzogen haben. Ungesucht ergab sich in diesem Zusammenhange die Möglichkeit, einige der in meiner.. Kulturphilosophie (Individuum und Gemeinschafts, 1926) e- wickelten Gedankengänge fortzuführen und in ihre prak­ tischen Konsequenzen hinein zu verfolgen. 1. Vorwort IV Man wolle die zahlreichen Stellenangaben, die auf die hier genannten Schriften Bezug nehmen, zugleich als Hinweise auf die daselbst herangezogene sonstige LHeratur verstehen. (shrink)

Locke’s view that continuants are numerically distinct from their constituting hunks of matter is popular enough to be called the “standard account”.1 It was given its definitive contemporary statement by David Wiggins in Sameness and Substance2, and has been defended by many since. Baker’s interesting book contributes new arguments for this view, a new definition of ‘constitution’, and a sustained application to persons and human animals. Much of what she says develops this view in new and important ways. But in (...) some cases she does not advance the position, and in others she takes steps backwards. According to Baker, a person is numerically distinct from her constituting animal. One of Baker’s leading arguments is surprisingly unconvincing. Persons differ in important ways from non-human animals. Only persons are moral agents, modify their goals, have wars, culture, etc. If persons were identical to animals—if we were “nothing but animals”, as she puts it—then the manifest discontinuity between humans and non-human animals would be located “within the domain of biology”. “But from a biological point of view, human animals…are biologically continuous with non-human animals.” (p. 17) The argument fails: why should identifying persons with animals preclude saying that these particular animals have radically distinctive features that are of little interest to biologists? The traditional case for non-identity (which Baker accepts) is more powerful: a person and her constituting animal differ by having different persistence conditions. If my memories were transferred to a new body and my old body destroyed, I the person might survive, but the human animal who constituted me would perish. Therefore, before the transfer, I and the animal that constituted me would be numerically distinct but extremely similar things located in exactly the same place. This consequence—the central thesis of the Wiggins view—is surprising: so surprising that some reject the Wiggins view on that basis.. (shrink)