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Otto Neurath’s empiricist methodology of economics and his contributions to politi- cal economy have gained increasing attention in recent years. We connect this research with contemporary debates regarding the epistemological status of thought experiments by reconstructing Neurath’s utopias as linchpins of thought experiments. In our three reconstructed examples of different uses of utopias/dystopias in thought experiments we employ a reformulation of Häggqvist’s model for thought experiments and we argue that: (1) Our reformulation of Häggqvist’s model more adequately complies with many (...) uses of thought experiments, especially with the open-ended discussions of utopias and dys- topias in thought experiments. (2) As a strict logical empiricist, Neurath is committed to a strictly empiricist account of thought experiments. John Norton’s empiricist argument view can indeed account for the justifications of empirical beliefs and genuine discoveries targeted by scientific utopianism in three distinct (yet connected) ways, all of which Neur- ath already contemplated: (2.I) Dealing with utopias and thought experiments on a regular basis increases creativity and inventiveness. (2.II) Particular ways of presenting knowl- edge facilitate scientific discovery and social progress. (2.III) The use of utopias in thought experiments can prompt conceptual change and allow access to new phenomena. We con- clude by highlighting that, even though thought experiments support a positive attitude for exploring new social possibilities, Neurath points out that active decisions are unavoidable. The exploration of alternatives and the awareness of a need for decisions in policy discus- sion avert a technocratic outlook in social science. (shrink)

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Otto Neurath’s empiricist methodology of economics and his contributions to political economy have gained increasing attention in recent years. We connect this research with contemporary debates regarding the epistemological status of thought experiments by reconstructing Neurath’s utopias as linchpins of thought experiments. In our three reconstructed examples of different uses of utopias/dystopias in thought experiments we employ a reformulation of Häggqvist’s model for thought experiments and we argue that: (1) Our reformulation of Häggqvist’s model more adequately complies with many uses (...) of thought experiments, especially with the open-ended discussions of utopias and dystopias in thought experiments. (2) As a strict logical empiricist, Neurath is committed to a strictly empiricist account of thought experiments. John Norton’s empiricist argument view can indeed account for the justifications of empirical beliefs and genuine discoveries targeted by scientific utopianism in three distinct (yet connected) ways, all of which Neurath already contemplated: (2.I) Dealing with utopias and thought experiments on a regular basis increases creativity and inventiveness. (2.II) Particular ways of presenting knowledge facilitate scientific discovery and social progress. (2.III) The use of utopias in thought experiments can prompt conceptual change and allow access to new phenomena. We conclude by highlighting that, even though thought experiments support a positive attitude for exploring new social possibilities, Neurath points out that active decisions are unavoidable. The exploration of alternatives and the awareness of a need for decisions in policy discussion avert a technocratic outlook in social science. (shrink)

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Neurath’s scientific utopianism is the proposal that the social sciences should engage in the elaboration, development, and comparison of counterfactual scenarios, the ‘utopias’. Such scenarios can be understood as centerpieces of scientific thought experiments, that is, in exercises of imagination that not only promote conceptual revision, but also stimulate creativity to deal with experienced problems, as utopias are efforts to imagine what the future could look like. Moreover, utopian thought experiments can offer scientific knowledge to inform political debates and decisions, (...) contributing to the shaping of society. This essay reconstructs a historical event as an example of Neurath’s utopianist methodology. In the late 1970s and early 1980s, a scientific and political commission appointed by the Western German Parliament devised and compared four scenarios for future energetic-economic policies. Conclusions of the commission informed political decisions that put Western (later reunified) Germany in a route towards becoming a green industrial power. A fundamental part of the commission’s work involved an appeal to imagination, allowing for the characterization under Neurath’s methodology. (shrink)

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Neurath’s approach to the problem of the unity of science is different from conceptions we may call traditional, to know, those that consider that what unites in one single concept the diverse sciences is the adoption of a method, or those that defend that this is carried through by certain characteristics which can be found in the body of knowledge considered scientific. Neurath’s stance also diverges from the standpoint that there is no unifying factor for science, that is, the view (...) that the different sciences are only classified under such concept because of the historical origin of such activities. Neurath’s proposal is to consider science as an attitude, a posture in relation to the problems of the world, the scientific world-conception. This text presents such approach in connection to the aspect of social transformation that can be found in Neurath’s thought. This is done following a comprehension of the ideas of the Vienna Circle, seeking to understand a continuity among the ideas of the members of such group, especially Neurath and Carnap. The present text aims, as well, at recovering the Neurathian idea that we can use a philosophical approach to science to struggle against the problems of the world. (shrink)

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In this article, I discuss Otto Neurath’s philosophy in the context of Vienna Circle modernism. Following recent scholarship, the discussion considers as a starting point Neurath’s participation at the fourth International Congress of Modern Architecture (CIAM IV). However, the image of Neurath’s modernism that results from this perspective is incomplete because it tends to overlook the importance of scientific utopianism in Neurath’s thought. Scientific utopianism is a methodology proposed by Neurath for the social sciences in technological contexts, in which scientists (...) elaborate and develop plans (utopias) for the transformation of society, thus contributing to an informed societal debate. Decisions are nevertheless kept outside the domain of scientific activity. I claim that recognizing the centrality of scientific utopianism in Neurath’s philosophy is fundamental to understand Neurath’s modernism. This interpretation highlights the affinities of Neurath’s philosophy of the social sciences with the modern utopianism of H. G. Wells. Both authors consider that there can be no ultimate solution to social problems but that a plural and constant debate of proposals is fundamental for the improvement of society. Therefore, Neurath’s modernism connects his philosophy of science to the literary utopian tradition. (shrink)

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This paper aims at disentangling two distinct problems in present philosophy of logic: the a priori/a posteriori divide and the theory choice problem. A confusion of these problems is present in the heart of current anti-exceptionalism about logic, as the use of a posteriori methods is identified with theory choice. We illustrate how the division may be preserved in a version of anti-exceptionalism by discussing Carnap’s approach, which had both an a priori epistemology and a pragmatic account of logical theory (...) choice. This contributes to illuminate the claim that the current understanding is mistaken in considering Carnap as an exceptionalist, and it also helps us to address one of the difficulties of current anti-exceptionalism, to know, that, by equating a posteriori with theory choice, it requires appeal to framework-independent facts. We suggest that the pragmatic account of both Quine and Carnap to theory choice was advanced precisely to avoid that kind of difficulty. (shrink)

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Este artigo discute dois tratamentos dados por Charles Sanders Peirce ao paradoxo do Mentiroso, estabelecendo conexões com o debate atual acerca do tema. Nas Harvard Lectures de 1865, Peirce considera que a proposição do mentiroso é tanto verdadeira quanto falsa, o que, de acordo com sua visão sobre a lógica, torna a proposição sem sentido. Esse tratamento antecipa parcialmente a posição dialeteísta contemporânea, que considera que o Mentiroso é uma evidência de que algumas proposições são verdadeiras e falsas. Em textos (...) posteriores, Peirce revisa seu tratamento do problema, considerando que a contradição do Mentiroso é falsa, alinhando-se à tradição da lógica de sua época. A discussão deste artigo evidencia que concepções lógicas específicas pressupostas na investigação de Peirce são as responsáveis pelas interpretações que ele fornece para a contradição envolvida no paradoxo. A partir dessa discussão, este artigo argumenta que o tratamento dado ao Mentiroso depende das concepções lógicas de fundo. Assim, as limitações encontradas por Peirce em suas abordagens ao problema são introduzidas pela lógica tradicional, que, diferentemente de algumas lógicas contemporâneas, não oferece aparato compatível com contradições verdadeiras. (shrink)

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This editorial presents the special issue with papers derived from presentations at the 13th Principia International Symposium, held in 2023. A brief context of the symposium is given, as well as an abstract of the keynote talks. Finally, the editorial introduces the main theme of the 14th Principia International Symposium, to be held in 2025.

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