Online research in philosophy

The authors investigate MacCormick and Weinberger's claim that the Institutional Theory of Law provides a conceptual framework for the study of legal phenomena from a socio-legal point of view. They evaluate this claim by confronting both the Institutional Theory of Law and Weinberger's theory of action with two approaches in socio-legal theory, i.e. the instrumentalist and the constitutive approach. The conclusion is that the Institutional Theory of Law lends itself to empirical research from an instrumentalist perspective, for both place the (...) concept `institution' in the context of law. Weinberger's theory of action may provide a basis for empirical research from a constitutive perspective. The authors make some suggestions for refinement of Weinberger's theory of action in order that the relation between institutions and action can be labeled dynamic. (shrink)

In 1924 Banach and Tarski demonstrated the existence of a paradoxical decomposition of the 3-ball B. i.e., a piecewise isometry from B onto two copies of B. This article answers a question of de Groot from 1958 by showing that there is a paradoxical decomposition of B in which the pieces move continuously while remaining disjoint to yield two copies of B. More generally, we show that if n ≥ 2, any two bounded sets in Rⁿ that are equidecomposable (...) with proper isometries are continuously equidecomposable in this sense. (shrink)

I define serendipity as the art of making an unsought finding. And I propose an overview of my collection of serendipities, the largest yet assembled, chiefly in science and technology, but also in art, by giving a list of ‘serendipity patterns’. Although my list of ‘patterns’ is just a list and not a classification, it serves to introduce a new and possibly stimulating perspective on the old subject of serendipity. Knowledge of these ‘serendipity patterns’ might help in expecting also the (...) unexpected and in finding also the unsought. * I acknowledge A. D. de Groot, R. C. M. Noordam, B. P. van Heusden, T. Pinkster, C. J. van den Berg, T. A. F. Kuipers, A. Wegener Sleeswijk and my referee for their suggestions and I dedicate this article to T. A. van Kooten. Cases and studies of serendipidy are welcome. À propos: a travelling serendipity exhibition is available, also for ‘new democracies’: ‘Freedom of opportunity as developed by democracy is the best human reaction to divergent phenomena. We may, in fact, define ‘freedom’ as ‘the opportunity to profit from the unexpected.’ (Langmuir [1956]). (shrink)