Recent observations of ultra high energy cosmic rays and gamma rays suggest that there are small violations of Lorentz symmetry. If there were no such violations, then the GZK cut off would hold and cosmic rays with energy ∼1020 eV or higher would not be reaching the earth. However some such events seem to have been observed. This has lead to phenomenological models in which there is a small violation of the Lorentz symmetry or the velocity of light. However recent (...) approaches which no longer consider a differentiable spacetime manifold already predict such violations. Similarly there are other theoretical reasons which also point to this. We briefly discuss some of these approaches and observe that Lorentz Symmetry violations can be tested by data from NASA’s GLAST satellite due for launch. (shrink)

Mikhail Bulgakov's novel The Master and Margarita was written between 1929 and 1940. Although delayed for a quarter of a century, it quickly found a stable place in our life as soon as it was published [for the first publication of the novel see: Moskva, 1966, no. 11; 1967, no. 1]. It is usually classified as a satirical philosophical novel. The satirical element puts it in the same family as such well-known works of the end of the '20s as the (...) novels of I. Il'f and E. Petrov, Twelve Chairs [Dvenadtsat' stul'ev] and The Golden Calf [Zolotoi telenok], but its emphatically philosophical orientation makes it all but a unique phenomenon in the history of Soviet literature. The novel's philosophical aspects have already been examined in a number of essays. Thus, for example, N. P. Utekhin analyzes the reflection of certain general philosophical categories in the novel. G. Chernikova and I. L. Galinskaia have endeavored to determine the concrete literary sources of the novel's philosophy [Chernikova 1971, pp. 213-219; Galinskaia 1986]. (shrink)

Do we remember what pain feels like? Investigations into this question have sometimes led to ambiguous or apparently contradictory results. Building on research on pain memory by Rohini Terry and colleagues, I argue that this lack of agreement may be due in part to the difficulty researchers face when trying to convey to their study's participants the type of memory they are being tasked with recalling. To address this difficulty, I introduce the concept of 'qualitative memory', which, arguably, is the (...) sort of memory we have of what red looks like yet lack with respect to pain. I also briefly address a number of consequences the acknowledgment of qualitative memory would potentially have for philosophy, arguing that if we fail to have qualitative memories of certain sensations, such as pain, the standard philosophical accounts of experience, rational choice, and the sources of moral action may all need revision. (shrink)

An implication is a proposition, a consequence is a relation between propositions, and an inference is act of passage from certain premise-judgements to another conclusion-judgement: a proposition is true, a consequence holds, whereas an inference is valid. The paper examines interrelations, differences, refinements and linguistic renderings of these notions, as well as their history. The truth of propositions, respectively the holding of consequences, are treated constructively in terms of verification-objects. The validity of an inference is elucidated in terms of the (...) existence of a chain of immediately evident steps linking premises and conclusion. (shrink)

Cognitive Task Analysis (CTA) helps researchers understand how cognitive skills and strategies make it possible for people to act effectively and get things done. CTA can yield information people needemployers faced with personnel issues, market researchers who want to understand the thought processes of consumers, trainers and others who design instructional systems, health care professionals who want to apply lessons learned from errors and accidents, systems analysts developing user specifications, and many other professionals. CTA can show what makes the workplace (...) workand what keeps it from working as well as it might.Working Minds is a true handbook, offering a set of tools for doing CTA: methods for collecting data about cognitive processes and events, analyzing them, and communicating them effectively. It covers both the "why" and the "how" of CTA methods, providing examples, guidance, and stories from the authors' own experiences as CTA practitioners. Because effective use of CTA depends on some conceptual grounding in cognitive theory and researchon knowing what a cognitive perspective can offerthe book also offers an overview of current research on cognition.The book provides detailed guidance for planning and carrying out CTA, with chapters on capturing knowledge and capturing the way people reason. It discusses studying cognition in real-world settings and the challenges of rapidly changing technology. And it describes key issues in applying CTA findings in a variety of fields. Working Minds makes the methodology of CTA accessible and the skills involved attainable. (shrink)

This article argues that in Pindar's epinicians first-person statements may occasionally be made in the persona of the chorus and the athletic victor. The speaking persona behind Pindar's first-person statements varies quite widely: from generic, rhetorical poses—a laudator, an aoidos in the rhapsodic tradition (the “bardic first person”), an Everyman (the “first person indefinite”)—to strongly individualized figures: the Theban poet Pindar, the chorus, the victor. The arguable changes in the speaker's persona are not explicitly signalled in the text. This can (...) lead to significant ambiguities concerning the identity of the speaker (“blurred quotation,” “indeterminate speech boundaries”). The lack of a concern always to distinguish clearly the primary from the secondary narrators relates to a desire to confuse diegetic and mimetic forms; the practice of the fifth-century choral lyric poets in this regard is compared to that of other ancient Greek writers. The main challenge is to indicate how it is possible, in theory and in practice, for the athletic victor to be identified as the speaker when this is not explicitly signalled in the text; and, if this is possible, to suggest how it is possible for an audience to recognize when the speaking persona subsequently reverts to laudator or poet. An attempt is made to consider whether any formal, structural, or thematic tendencies can be observed in those passages in choral lyric where the chorus or the victor are tacitly introduced as speaking personae: such effects, it is argued, occur especially when links of ritual or genealogy enable the ode to “zoom” from the mythical past to the present occasion of the performance. The main passages discussed in the article are Pind. P.8.56–60, P.9.89–92, N.7.85, Pae. 2.73–79, and Bacch. 3.84–85. But the phenomena discussed are related broadly to other phenomena in Greek literature, in Latin poetry, and, especially, in Cicero's forensic oratory. (shrink)

This chapter contains sections titled: I II III IV V VI VII VIII IX X.

A vast literature has been devoted to the Dialectics of Nature and dialectics in Capital. There is a considerable number of works in which the connection between the philosophical generalization of natural science in the Dialectics of Nature and the philosophical aspects of the economic categories in Capital are analyzed. I should like to touch upon only one aspect of the problem — that aspect which pertains to certain new problems in philosophical and economic thought. Reference is, first, to the (...) new, unprecedented role of philosophy and natural science in the period of the scientific and technological revolution under the conditions of the unification and planning of science and, second, to the unprecedented dynamism of the economy today. This dynamism requires a radical rethinking of categories, and that rethinking, in turn, requires a return to the fundamental categories of Capital. (shrink)

Susan Schneider argues that physicalism must be false if abstracta are part of the physicalist's dependence base. In opposition to her view, here I set out some reasons to think that abstracta in general, including abstracta that are woven into the dependence base, are something physicalists can countenance with consistency.

The genesis of classical science was accompanied by a transition from logical to mathematical analysis. This change did not mean a rejection of Aristotle's canons of logic; it was simply that these canons became inadequate. They underwent a certain generalization and, in the course of this, came closely to approximate mathematical analysis, the foundations of the calculus of the infinitesimal. Classical science no longer took as its point of departure the notion of motion from "something" into "something," as did Peripatetic (...) physics and cosmology . The initial concept is motion, considered from point to point and instant to instant. This kind of differential notion of motion was clearly expressed by Kepler when he wrote: "Where Aristotle sees direct oppositeness between two things, with no mediating links, there I, looking at geometry philosophically, find a mediated opposition; so that where Aristotle employs a single term, ‘other,’ I use two: ‘larger’ and ‘smaller.’". (shrink)