In his Twentieth-Century American Philosophy Through Nineteen Portraits, Dr. Maior S. Kelner plumbs original sources to create biographical sketches, in philosophical and historical context, of the 19 greatest contributors to the development of philosophy in the twentieth century United States.The volume consists of 18 author's sheets, with a table of contents, a foreword, six chapters, explanatory notes, an epilogue, a selective bibliography. It is intended for philosophers, historians, and those interested in cultural history, and may be used as a (...) textbook on the history of American philosophy. (shrink)

Ocean biology helps regulate global climate by fixing atmospheric CO2 and exporting it to deep waters as sinking detrital particles. New observations demonstrate that particle fragmentation is the principal factor controlling the depth to which these particles penetrate the ocean's interior, and hence how long the constituent carbon is sequestered from the atmosphere. The underlying cause is, however, poorly understood. We speculate that small, particle‐associated copepods, which intercept and inadvertently break up sinking particles as they search for attached protistan prey, (...) are the principle agents of fragmentation in the ocean. We explore this idea using a new marine ecosystem model. Results indicate that explicitly representing particle fragmentation by copepods in biogeochemical models offers a step change in our ability to understand the future evolution of biologically‐mediated ocean carbon storage. Our findings highlight the need for improved understanding of the distribution, abundance, ecology and physiology of particle‐associated copepods. (shrink)

Sinking organic particles transfer ∼10 gigatonnes of carbon into the deep ocean each year, keeping the atmospheric CO2 concentration significantly lower than would otherwise be the case. The exact size of this effect is strongly influenced by biological activity in the ocean's twilight zone (∼50–1,000 m beneath the surface). Recent work suggests that the resident zooplankton fragment, rather than ingest, the majority of encountered organic particles, thereby stimulating bacterial proliferation and the deep‐ocean microbial food web. Here we speculate that this (...) apparently counterintuitive behaviour is an example of ‘microbial gardening’, a strategy that exploits the enzymatic and biosynthetic capabilities of microorganisms to facilitate the ‘gardener's’ access to a suite of otherwise unavailable compounds that are essential for metazoan life. We demonstrate the potential gains that zooplankton stand to make from microbial gardening using a simple steady state model, and we suggest avenues for future research. (shrink)

Some recent scholarship on Kuhn emphasizes his unconscious contribution to logical positivism—a consequence of Kuhn’s superficial knowledge and criticism of that school of thought. In this paper I argue against that thesis on the basis of an unpublished text: The Quest for Physical Theory, his lectures at theLowell Institute, Boston, and an early version of the point of view of The Structure of Scientific Revolutions.Ciertas interpretaciones de la obra de Kuhn subrayan su contribución inconsciente al positivismo lógico, lo que es (...) consecuencia de un conocimiento y una crítica superficiales de dicha corriente por su parte. En este artículo critico dicha tesis a partir de un texto inédito de Kuhn: The Quest for Physical Theory, sus conferencias en el Instituto Lowell de Boston y una primera presentación del punto de vista de The Structure of Scientific Revolutions. (shrink)

In this paper I examine Thomas Kuhn’s epistolary and in-person exchanges with Richard Rorty, and their significance to the former’s work on the nature of scientific development during the years 1976–1986. Accordingly, it corresponds to a significant evolution of Kuhn’s thought from the position expounded earlier in The Structure of Scientific Revolutions. These letters show how Kuhn’s philosophy of science evolved towards a greater emphasis on a key aspect of his former work—the nature of ‘the essential tension’—and that his more (...) linguistically-oriented perspective in these latter years has that emphasis as its goal—at least as a significant part. (shrink)

Thomas Kuhn’s relativistic position is usually expounded in terms of its subjectivist and irrationalist consequences and, accordingly, as a contribution to anti-scientificism. This paper explains his pluralism in semantics and ontology and shows in it a kind of relativism from which those consequences do not follow. It is also argued that, despite that, this version does not converge to empiricism or scientific realism.

In 2021, two new books were published that help us to revisit, once again, the work and life of the historian and philosopher of science Thomas Kuhn (1922–1996). They arrived in time for the year 2...

REASON AND COMMON SENSE REASON AND COMMON SENSE AN INQUIRY INTO SOME PROBLEMS OF PHILOSOPHY by R. G. MAYOR with a Preface by SIR DESMOND MACCARTHY, L. L. D. ...

By considering the irreducible representations of the Lorentz group, an analysis of the different spin-2 waves is presented. In particular, the question of the helicity is discussed. It is concluded that, although from the point of view of representation theory there are no compelling reasons to choose between spin-2 waves with helicity σ=±1 or σ=±2, consistency arguments of the ensuing field theories favor waves with helicity σ=±1.

This paper is an introduction to the special issue commemorating the 50th anniversary of the publication of The Structure of Scientific Revolutions by Thomas Kuhn. It introduces some main ideas of Structure, as its change in historical perspective for the interpretation of scientific progress, the role and nature of scientificcommunities, the incommensurability concept, or the new-world problem, and summarizes some philosophical reactions. After this introduction, the special issue includes papers by Alexander Bird, Paul Hoyningen-Huene and George Reisch on different aspects (...) of Kuhn’s work.Este artículo es una introducción al número monográfico que conmemora el 50º aniversario de la publicación de La estructura de las revoluciones científicas de Thomas Kuhn. En la introducción se presentan algunas de las ideas principales del libro, como su cambio de perspectiva histórica para la interpretación del progreso científico, el papel y naturaleza de las comunidades científicas, el concepto de inconmensurabilidad o el problema del cambio de mundo, y se resumen algunas reacciones filosóficas a las mismas. Tras la introducción, el número monográfico está compuesto por artículos de Alexander Bird, Paul Hoyningen-Huene y George Reisch que versan sobre diversos aspectos de la obra de Kuhn. (shrink)

First published in 1881, as part of the Pitt Press Series, this book presents a guide to classical philosophy aimed at undergraduates and those studying the works of Cicero, Plato or Aristotle. All quotations are in the original Greek and Latin. This book will be of value to anyone with an interest in the history of philosophy and perspectives on classical thought.

Desde las filosofías de la imaginación y vitalista, María Zambrano habla del exilio político. Lo protagonizan los bienaventurados, a saber, los fieles a sus ideales, unos seres libres que no mienten porque no necesitan los disfraces de la maldad. Las fases del exilio son: 1) el destierro o pérdida d..