It is widely believed that at least two developments in the last third of the 20th century have given dispositionalism—the view that powers, capacities, potencies, etc. are irreducible real properties—new credibility: (i) the many counterexamples launched against reductive analyses of dispositional predicates in terms of counterfactual conditionals and (ii) a new anti-Humean faith in necessary connections in nature which, it is said, owes a lot to Kripke’s arguments surrounding metaphysical necessity. I aim to show in this paper that necessity is, (...) in fact, of little help for the dispositionalists. My argument makes use of one of the above mentioned counterexamples against Humean reduction: antidotes. Turning the tables, I ask how the dispositionalists themselves can deal with antidotes. The result will be to show that if the dispositionalists are to demystify antidote cases, they must make plausible a conceptualisation of dispositions that does not invoke any kind of necessity. I will cautiously suggest that the anti-Humean link dispositions bring to the world has to be thought of in terms of (Newtonian) forces. (shrink)

If □ is conceived as an operator, i.e., an expression that gives applied to a formula another formula, the expressive power of the language is severely restricted when compared to a language where □ is conceived as a predicate, i.e., an expression that yields a formula if it is applied to a term. This consideration favours the predicate approach. The predicate view, however, is threatened mainly by two problems: Some obvious predicate systems are inconsistent, and possible-worlds semantics for predicates of (...) sentences has not been developed very far. By introducing possible-worlds semantics for the language of arithmetic plus the unary predicate □, we tackle both problems. Given a frame (W, R) consisting of a set W of worlds and a binary relation R on W, we investigate whether we can interpret □ at every world in such a way that □ $\ulcorner A \ulcorner$ holds at a world ᵆ ∊ W if and only if A holds at every world $\upsilon$ ∊ W such that ᵆR $\upsilon$ . The arithmetical vocabulary is interpreted by the standard model at every world. Several 'paradoxes' (like Montague's Theorem, Gödel's Second Incompleteness Theorem, McGee's Theorem on the ω-inconsistency of certain truth theories, etc.) show that many frames, e.g., reflexive frames, do not allow for such an interpretation. We present sufficient and necessary conditions for the existence of a suitable interpretation of □ at any world. Sound and complete semi-formal systems, corresponding to the modal systems K and K4, for the class of all possible-worlds models for predicates and all transitive possible-worlds models are presented. We apply our account also to nonstandard models of arithmetic and other languages than the language of arithmetic. (shrink)

Es gibt kein logisch gültiges Induktionsverfahren. Induktion ist Extrapolation von bisher erfahrenen Einzeltatsachen auf künftige. Die Zukunft ist aber selbst schon eine Extrapolation, keine Erfahrungstatsache, sondern Erwartung. Um sich nicht bloß auf historische Erkenntnis beschränken zu müssen, ist es unentbehrlich, die Voraussetzung zu machen, daß unter gleichen Bedingungen das Gleiche erfolgt. Auf Grund dieser Voraussetzung läßt sich deduktiv ableiten, was induktiv erwiesen werden sollte, aber nicht möglich ist. Logisch stichhaltige Begründung ist nur deduktiv möglich.

Die Kulturwissenschaften besitzen ein Interesse an einer positiven inkompatibilistischen Antwort auf die Frage nach der Freiheit des Willens. Wäre es nicht möglich, einen gehaltvollen inkompatibilistischen Begriff von Willensfreiheit zu entwickeln, besäßen die Kulturwissenschaften einen gegenüber den Naturwissenschaften defizienten Status in dem Sinne, dass ihre hermeneutische Vorgehensweise nur provisorischen Wert hat, solange bis eine verlaufsgesetzliche Erklärung des je betreffenden menschlichen Verhaltens etabliert ist. Im Beitrag wird zunächst der Begriff der Willensfreiheit diskutiert. Im Anschluss daran wird zum einen der deterministische Versuch widerlegt, (...) die Existenz einer (inkompatibilistisch bestimmten) Freiheit des Willens zu negieren und zum anderen aber auch die übichen antideterministischen Verteidigungsversuche als unzureichend ausgewiesen. Im letzten Abschnitt wird die Willensfreiheit als die Fähigkeit verstanden, sein Handeln an (als gut bzw. besser erkannten) Gründen ausrichten zu können. (shrink)

The aim of this paper is to discuss how far physics differs frommathematics, and if a philosophy of science which uses mathematics or logicsas a model for physics would be unable to be aware of many importantfeatures of that natural science.Many functions in physics differ from those of mathematics in beingfunctional dependecies and in having a lawlike character.Physical quantities have the character of "`determinables"'', sets ofspecial entities which are presupposed by physical theories.One may suspect that physics also could not be (...) formulated in anextensional language. This cannot be true, however, since every language canbe translated into an extensional version. Neverthless the existence ofdeterminables in physics shows that physics does not only talk aboutconcrete entities like space, time, spacetime, and particles, but also aboutvalues of abstract sets like determinables, and that it thus acknowledgestheir existence. (shrink)