We introduce a new understanding of deontic modals that we callobligations as weakest permissions. We argue for its philosophical plausibility, study its expressive power in neighborhood models, provide a complete Hilbert-style axiom system for it and show that it can be extended and applied to practical norms in decision and game theory.

By building on work by Kit Fine, we develop a sound and complete truthmaker semantics for Lou Goble’s conflict tolerant deontic logic BDL.

We develop an exact truthmaker semantics for permission and obligation. The idea is that with every singular act, we associate a sphere of permissions and a sphere of requirements: the acts that are rendered permissible and the acts that are rendered required by the act. We propose the following clauses for permissions and obligations: -/- - a singular act is an exact truthmaker of Pφ iff every exact truthmaker of φ is in the sphere of permissibility of the act, and (...) -/- - a singular act is an exact truthmaker of Oφ iff some exact truthmaker of φ is in the sphere of requirements of the act. -/- We show that this semantics is hyperintensional, and that it can deal with some of the so-called paradoxes of deontic logic in a natural way. Finally, we give a sound and complete axiomatization of the semantics. (shrink)

In Meyer’s promising account [7] deontic logic is reduced to a dynamic logic. Meyer claims that with his account “we get rid of most (if not all) of the nasty paradoxes that have plagued traditional deontic logic.” But as was shown by van der Meyden in [4], Meyer’s logic also contains a paradoxical formula. In this paper we will show that another paradox can be proven, one which also effects Meyer’s “solution” to contrary to duty obligations and his logic in (...) general. (shrink)

Dieser Sammelband hat zum Ziel, moderne atheistische Richtungen kritisch und wissenschaftlich zu betrachten. Mit diesen modernen atheistischen Richtungen ist vor allem der in Oxford unterrichtende Biologe und Religionskritiker Richard Dawkins verknüpft, bekennender Gegner von Kreationismus, Intelligent Design und Theologie, der schon 1976 mit der Veröffentlichung seines Buches "Der Gotteswahn" in der breiten Öffentlichkeit auf sich aufmerksam machte. Auch in jüngerer Vergangenheit, und zwar im Jahr 2006, war Dawkins mit seinem Buch (Dawkins 2006) an einem erneuten Aufflammen einer vor allem in (...) den USA geführten Diskussion rund um die Vereinbarkeit oder Unvereinbarkeit von theologischen und evolutionstheoretischen Ansätzen beteiligt. Beim Durchblättern dieses Buches wird spätestens beim Entdecken des vierten Kapitels, das den provokanten Titel "Warum es mit ziemlicher Sicherheit keinen Gott gibt" trägt, klar, dass Dawkins damit keine Brücke zwischen Evolutionsbiologie und Schöpfungstheologie schlagen möchte. Auch Dawkins selbst hält dieses Kapitel für das wichtigste seines Buches: "This chapter has contained the central argument of my book" (cf. Dawkins 2006, p. 187). -/- Dies ist Grund genug, uns dieses Kapitel aus Dawkins' Buch näher anzusehen. Schließlich verbindet Dawkins damit hohe Ansprüche: "If the argument of this chapter is accepted, the factual premise of religion - the God Hypothesis - is untenable. God almost certainly does not exist. This is the main conclusion of the book so far" (cf. Dawkins 2006, p.189). Sein Argument, im englischen Original "main argument" (hier: "Hauptargument") genannt, verdient also genauere Betrachtung und soll in diesem Artikel wissenschaftstheoretisch beleuchtet werden. (shrink)

In this contribution the socalled Meno-Problem will be discussed. With respect to theories the problem is the following question: Why is it epistemologically more valuable to know a true theory than to simply believe it? A classical answer in reabilist accounts to this problem refers to the value of the operation which is used for gathering knowledge. But there is a gap in the argumentation as far as one is not allowed to derive from this assumption the conclusion that also (...) the result of the operation is valuable. We are going to show a difference between true theories which are just believed and theories which are also known to be true. This difference seems to allow one to close the mentioned gap. (shrink)

This paper deals with the axiomatizability problem for the matrix-based logics RMQ − and RMQ *. We present a Hilbert-style axiom system for RMQ −, and a quasi-axiomatization based on it for RMQ *. We further compare these logics to different well-known modal logics, and assess its status as relevance logics.

In this comment to Kehrer (2014) the relevance of atheistic argumentation in the domain of ethics as an important part of religion is sketched.

Der Atheismus erlebte in den letzten Jahren eine Renaissance. Durch verschiedene Publikationen wurde der Atheismus in der Offentlichkeit und in den Wissenschaften wieder zum Thema. Religioser Glaube sei mit einem wissenschaftlichen Weltbild nicht vereinbar, so viele Atheisten. Diese Bewegung fasst man unter dem Namen Neuer Atheismus zusammen. Aber ist tatsachlich etwas neu am neuen Atheismus? Gibt es in den modernen Naturwissenschaften noch einen Platz fur Gott? Konnen Argumente der neuen Atheisten uberzeugend zeigen, dass es unvernunftig und unwissenschaftlich ist, an die (...) Existenz eines Gottes zu glauben? Dies sind nur einige Beispielfragen, die die Autoren dieses Bandes versuchen werden zu beantworten. Die Autoren kommen aus unterschiedlichsten Disziplinen: Aus der Physik, der Biologie, der Mathematik, der Philosophie und der Theologie.". (shrink)

The SOPhiA conferences are intended to give young predoctoral philosophers the possibility to actively attend a professional conference, to tackle current, as well as classical, philosophical problems, and to discuss their own approaches with promising students from many dierent countries as well as with wellestablished experts. We are firmly convinced that this is a natural and necessary step for promoting the next generation of analytic philosophers and thus, strengthening analytic philosophy in general. Because we believe that the methods of analytic (...) philosophy can be fruitfully applied to all areas of philosophy, the SOPhiA conferences do not have a thematic focus; this is also reflected by the fact that the talks given at SOPhiA 2011 covered all areas of philosophy. (shrink)