Thomas S. Kuhn is famous both for his work on the Copernican Revolution and his ‘paradigm’ view of scientific revolutions. But Kuhn later abandoned the notion of paradigm in favour of a more ‘evolutionary’ view of the history of science. Kuhn’s position therefore moved closer to ‘continuity’ models of scientific progress, for instance ‘chain-of-reasoning’ models, originally championed by D. Shapere. The purpose of this paper is to contribute to the debate around Kuhn’s new ‘developmental’ view and to evaluate these competing (...) models with reference to some major innovations in the history of cosmology, from Copernicanism to modern cosmology. This evaluation is made possible through some unexpected overlap between Kuhn’s earlier discontinuity model and various versions of the later continuity models. It is the thesis of this paper that the ‘chain-of-reasoning’ model accounts better for the cosmological evidence than both Kuhn’s early paradigm model and his later developmental view of the history of science. (shrink)

I address some specific problems in the two target articles offered here (Rao and Palmer/Alcock: Parapsychology review and critique), which are indicative of more general problems that plague the larger debate. Because such problems are rather typical of scientific conflict, I address general problems of assessment in a second section. In a final section. I make some comments about the future of this debate.

Over the past hundred years, a number of scientific investigators claim to have adduced experimental evidence for phenomena information” seems to behave like a weak signal that has to compete for the information-processing resources of the organism, a reduction of ongoing sensorimotor activity may facilitate ESP detection. Such a meaningful convergence of results suggests that psi phenomena may represent a unitary, coherent process whose nature and compatibility with current physical theory have yet to be determined. The theoretical implications and potential (...) practical applications of psi could be significant, irrespective of the small magnitude of psi effects in laboratory settings. (shrink)

Constructivism claims to be a postepistemology that replaces 'traditional' concepts of knowledge. Supporters of constructivism have argued that progress requires that pre-service teachers be weaned off traditional approaches and that they should adopt constructivist views of knowledge. Constructivism appears to be gaining ground rapidly and should no longer be viewed as an exercise in radical thinking primarily aimed at generating innovative teaching. It has become an integral part of the pedagogic mainstream. Close examination of the theoretical foundations of constructivism, however, (...) reveals that the basic assumptions of constructivism are flawed. Far from being a postepistemology, constructivism simply regresses to a pre-Renaissance mindset with theology replaced with a psychologism. Constructivists should be aware that the implications of constructivism for future generations may be both profound and non-benign. (shrink)

Abstract The concepts of consciousness and the unconscious have been problematic for cognitive science. This paper is an attempt to determine if artistic and, especially, scientific creativity, taken as a paradigm of cognitive activity, can be explained without recourse to the concept of the unconscious. It opens with a description of creative experience, guided by the works of Arthur Koestler and Abraham Pais and illustrated by anecdotes from the history of science. It then offers a summary and critique of the (...) classical Freudian account of creativity. Next, adopting the perspective of connectionism or parallel distributed processing, the paper proceeds to examine the possibility of creative insight in neural networks. It closes with some observations on the brain/mind problem and with remarks on the necessity and usefulness of the unconscious as an explanatory construct. (shrink)

In this paper, I explore the question of whether the expected consequences of holding a belief can affect the rationality of doing so. Special attention is given to various ways in which one might attempt to exert some measure of control over what one believes and the normative status of the beliefs that result from the successful execution of such projects. I argue that the lessons which emerge from thinking about the case ofbelief have important implications for the way we (...) should think about the rationality of a number of other propositional attitudes,such as regret, desire, and fear. Finally,I suggest that a lack of clarity with respect to the relevant issues has given rise to a number of rather serious philosophical mistakes. (shrink)

This article deals with the social production of knowledge in the exact sciences. After defining the term ?exact science?, it delineates the broad dynamic of its history. It, then, offers a socio-economic historical explanation of why the production of knowledge has become a major industry, if not the largest industry, in the last hundred years. The article concludes by drawing a detailed blueprint of the components, mechanisms, and specificities of the knowledge industry.

El trabajo de la ciencia con las imágenes nos muestra procedimientos que se alejan, por un lado, de los rigores del estricto método científico, y que crean, por el otro, innumerables paradojas, cuya intensidad se acrecienta a medida que aumenta la complejidad del objeto estudiado. A las operaciones simbólicas y retóricas configuradoras de las imágenes científicas, la mayoría de carácter tecnológico, se añaden los procesos de visualización que ponen en escena, en muy diversos niveles, las relaciones fundamentales de aquellas. Los (...) nuevos estudios sobre la representación científica hablan de imágenes cargadas de teoría que se acercan a la eventualidad de una ciencia poética, cuyo camino habría sido abandonado a partir del siglo XVII, cuando la ciencia moderna provoca la separación epistémica entre lo real y la realidad. (shrink)