In this paper we study the systemsP andP * (see Arruda and da Costa,O paradoxo de Curry-Moh Shaw-Kwei, Boletim da Sociedade Matemtica de São Paulo 18 (1966)) and some related systems. In the last section, we prove that certain set theories havingP andP * as their underlying logics are non-trivial.

In this basically expository paper we discuss the role oflogic and mathematics in researches concerning the ontology of scientific theories, and we consider the particular case of quantum mechanics. We argue that systems of logic in general, and classical logic in particular, may contribute substantially with the ontology of any theory that has this logic in its base. In the case of quantum mechanics, however, from the point of view of philosophical discussions conceming identity and individuality, those contributions may not (...) be welcome for a specific interpretation, and an altemative system of logic perhaps could be used instead of a classical system. In this sense, we argue that the logic and ontology of a scientific theory may be seen as mutually inftuencing each other. On the one hand, logic contributes to shape the general features of the ontology of a theory; on the other hand, the theory also puts constraints on the possible understanding of ontology and, respectively, on possible systems of logic that may be the underlying logic ofthe theory. (shrink)

The role of chance in historiography is a major question for the analysis of cultural transformations. Its main subject are the transformations of contingentia itself, which has undergone substantial changes in its mythical forms (as Tyche or Fortuna) as well in its historical expressions in philosophy, theology, politics, sciences, literature and art.

Provability, Computability and Reflection.

Political violence in the form of wars, insurgencies, terrorism and violent rebellion constitutes a major human challenge. C. A. J. Coady brings a philosophical and ethical perspective as he places the problems of war and political violence in the frame of reflective ethics. In this book, Coady re-examines a range of urgent problems pertinent to political violence against the background of a contemporary approach to just war thinking. The problems examined include: the right to make war and conduct war, terrorism, (...) revolution, humanitarianism, mercenary warriors, the ideal of peace and the right way to end war. Coady attempts to vindicate the contemporary relevance of the just war tradition to current problems without applying the tradition in a merely mechanical or uncritical fashion. (shrink)

In this response to Jonny Anomaly’s ‘Is Obesity a Public Health Problem?’ I argue, contra the author that public health actually increases individuals’ abilities to choose actions that further their health goals, specifically in the case of obesity. The intractability of obesity as an individual medical problem combined with the health benefits of modest (5–10 per cent of body weight) weight loss suggest that public health measures helping people make small changes in eating habits improve population health. I argue that (...) such measures are available to public health via behavioral economic research and policy proposals from libertarian paternalists. I respond to author’s claim that obesity does not constitute a public health problem because: (i) it is not an epidemic and (ii) obesity reduction is not a public good. I argue that epidemic status is not required for classification as a public health problem, but that obesity does have the status of an epidemic. I also point out flaws in author’s reasoning about obesity, public health and social costs. I conclude by suggesting that public health, in partnership with stakeholders and other areas of government, is poised to help create conditions for modest weight loss and increased population health overall. (shrink)

An explicit philosophy and meta-philosophy of positivism, empiricism and popperianism is provided. Early popperianism is argued to be essentially a form of empiricism, the deviations from empiricism are traced. In contrast, the meta-philosophy and philosophy of an evolutionary naturalistic realism is developed and it is shown how the maximal conflict of this doctrine with all forms of empiricism at the meta-philosophical level both accounts for the form of its development at the philosophical level and its defense against attack from nonrealist (...) quarters. Following an earlier article on realism of similar theme (Synthese 26 (1974), 409) this paper then further explores the ramifications of a thoroughgoing realist position. (shrink)

C. A. J. Coady; VIII*—Descartes' Other Myth, Proceedings of the Aristotelian Society, Volume 83, Issue 1, 1 June 1983, Pages 121–142, https://doi.org/10.1093/ar.

This paper contains a restatement of the reflections embodied in an address to the British Society of Aesthetics on 1st March 1961, under the title ‘Some Contributions of Psychology to Aesthetics’. In the process of revision less stress has been placed on the contributions of psychology to aesthetics and more on the potential contributions of aesthetics to general psychology, and more especially to the theory of human motivation.