In this paper, I will present a Fitch–style natural deduction proof theory for modal paralogics (modal logics with gaps and/or gluts for negation). Besides the standard classical subproofs, the presented proof theory also contains modal subproofs, which express what would follow from a hypothesis, in case it would be true in some arbitrary world.

In this paper, I will characterize a new class of inconsistency-adaptive logics, namely inconsistency-adaptive modal logics. These logics cope with inconsistencies in a modal context. More specifically, when faced with inconsistencies, inconsistency-adaptive modal logics avoid explosion, but still allow the derivation of sufficient consequences to adequately explicate the part of human reasoning they are intended for.

Most logic–based approaches characterize abduction as a kind of backwards deduction plus additional conditions, which means that a number of conditions is specified that enable one to decide whether or not a particular abductive inference is sound . Despite the fact that these approaches succeed in specifying which formulas count as valid consequences of abductive inference steps, they do not explicate the way people actually reason by means of abductive inferences. This is most clearly shown by the absence of a (...) decent proof theory. Instead, search procedures are provided that enable one to determine the right abductive consequences. However, these do not by far resemble human reasoning. In order to explicate abductive reasoning more realistically, an alternative approach will be provided in this article, namely, one that is based on the adaptive logics programme. Proof theoretically, this approach interprets the argumentation schema affirming the consequent as a defeasible rule of inference. This comes down to the fact that the abductive consequences obtained by means of AC are accepted only for as long as certain conditions are satis.ed—e.g. as long as their negation has not been derived from the background theory. In the end, only the unproblematic applications of AC are retained, while the problematic ones are rejected. In this way, the adaptive logics approach to abduction succeeds to provide a more realistic explication of the way people reason by means of abductive inferences. Moreover, as multiple abduction processes will be characterized, this article may be considered as the first step in the direction of a general formal approach to abduction based on the adaptive logics programme. (shrink)

Nähere Informationen zu diesem Buch erhalten Sie direkt vom Verlag / For further information about this title please contact Mohr Siebeck.

Written in the 1960s, TRUTH AND METHOD is Gadamer's magnum opus. Looking behind the self-consciousness of science, he discusses the tense relationship between truth and methodology. In examining the different experiences of truth, he aims to "present the hermeneutic phenomenon in its fullest extent.

The ever-increasing dominance of English within analytic philosophy is an aspect of linguistic globalisation. To assess it, I first address fundamental issues in the philosophy of language. Steering a middle course between linguistic universalism and linguistic relativism, I deny that some languages might be philosophically superior to others, notably by capturing the essential categories of reality. On this background I next consider both the pros and cons of the Anglicisation of philosophy. I shall defend the value of English as a (...) lingua franca, while denying both the feasibility and the desirability of English as the sole universal language of philosophy. Finally I turn to the linguistic inequality in contemporary analytic philosophy. While it does not per se amount to an injustice, there is a need to level the playing field. But the remedy does not lie in linguistic academic sectarianism. Instead, what might be called for are piecemeal measures to reduce explicit and implicit biases against analytic philosophers on the geographic fringes, biases that are only partly connected to the predominance of English. (shrink)

ABSTRACT:This essay presents a critical examination and development of an exchange between Adam Smith and David Hume on the nature of sympathy. I identify four objections to Smith's account in a letter from Hume and then argue that Smith's system has the resources to reply to all of them. As such, this essay shows that Smith's system provides a more robust foundation for a sentiment-based system of ethics than has been traditionally recognized.

Beherrschten vor 20 Jahren noch Industriekonglomerate, Energiekonzerne und Banken die Rangliste der wertvollsten Unternehmen, wurden diese längst von Internetgiganten wie Google, Apple, Amazon und Tencent abgelöst. Digitale Technik ist allgegenwärtig: Wir tragen Hochleistungsrechner in unseren Taschen herum, Waschmaschinen können sich mit dem Internet verbinden. Doch erschöpft sich darin das Neue am digitalen Kapitalismus? 0Philipp Staab beleuchtet den digitalen Kapitalismus aus unterschiedlichen Perspektiven, um ihn präziser auf den Begriff zu bringen. Er zeigt, wie digitale Überwachungs- und Bewertungspraktiken in immer mehr Bereiche (...) der Wirtschaft vordringen und dabei die soziale Ungleichheit verschärfen. Das Spezifische am digitalen Kapitalismus, so Staab, ist die Herausbildung 'proprietärer Märkte': Kam es früher darauf an, Dinge herzustellen und mit Gewinn zu verkaufen, geht es im Zeitalter der Unknappheit um das Eigentum an den Märkten selbst. (shrink)

Die folgende Untersuchung ist eine Antwort auf die Frage nach dem Ort des 'Irrationalisten' Johann Gottfried Herder innerhalb des Kontinuums der Aufklärung. Aus dem Inhalt: I. Ästhetik als Desiderat der Gnoseologie A. Gottfried Wilhelm Leibniz B. Christian Wolff C. Alexander Gottlieb Baumgarten II. Herders Ästhetik-Kritik A. Herders Kritik der Philosophie der "Wortwelten" B. Herders Auseinandersetzung mit Baumgarten III. Herders Ästhetik-Entwurf A. Zum Konzept der Prägnanz B. Haptik und Skulptur, Optik und Malerei C. Poesie - Phantasie und Dichtungsvermögen IV. Herders Entwurf (...) einer Geschichtsphilosophie A. Der Status der Geschichtsphilosophie B. Aisthesis und Geschichte. (shrink)

In ‘belief revision’ a theory\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\cal K}$$\end{document} is revised with a formula φ resulting in a revised theory \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\cal K}\ast\varphi$$\end{document}. Typically, \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\neg\varphi$$\end{document} is in \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\cal K}$$\end{document}, one has to give up belief in \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\neg\varphi$$\end{document} by a process (...) of retraction, and φ is in \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\cal K}\ast\varphi$$\end{document}. We propose to model belief revision in a dynamic epistemic logic. In this setting, we typically have an information state (pointed Kripke model) for the theory \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\cal K}$$\end{document} wherein the agent believes the negation of the revision formula, i.e., wherein \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$B\neg\varphi$$\end{document} is true. The revision with φ is a program *φ that transforms this information state into a new information state. The transformation is described by a dynamic modal operator [*φ], that is interpreted as a binary relation [ [*φ] ] between information states. The next information state is computed from the current information state and the belief revision formula. If the revision is successful, the agent believes φ in the resulting state, i.e., Bφ is then true. To make this work, as information states we propose ‘doxastic epistemic models’ that represent both knowledge and degrees of belief. These are multi-modal and multi-agent Kripke models. They are constructed from preference relations for agents, and they satisfy various characterizable multi-agent frame properties. Iterated, revocable, and higher-order belief revision are all quite natural in this setting. We present, for an example, five different ways of such dynamic belief revision. One can also see that as a non-deterministic epistemic action with two alternatives, where one is preferred over the other, and there is a natural generalization to general epistemic actions with preferences. (shrink)