A non-relativistic quantum mechanical theory is proposed that describes the universe as a continuum of worlds whose mutual interference gives rise to quantum phenomena. A logical framework is introduced to properly deal with propositions about objects in a multiplicity of worlds. In this logical framework, the continuum of worlds is treated in analogy to the continuum of time points; both “time” and “world” are considered as mutually independent modes of existence. The theory combines elements of Bohmian mechanics and of Everett’s (...) many-worlds interpretation; it has a clear ontology and a set of precisely defined postulates from where the predictions of standard quantum mechanics can be derived. Probability as given by the Born rule emerges as a consequence of insufficient knowledge of observers about which world it is that they live in. The theory describes a continuum of worlds rather than a single world or a discrete set of worlds, so it is similar in spirit to many-worlds interpretations based on Everett’s approach, without being actually reducible to these. In particular, there is no splitting of worlds, which is a typical feature of Everett-type theories. Altogether, the theory explains (1) the subjective occurrence of probabilities, (2) their quantitative value as given by the Born rule, and (3) the apparently random “collapse of the wavefunction” caused by the measurement, while still being an objectively deterministic theory. (shrink)

This Insight examines the stance the EU should adopt towards the Russian invasion of Ukraine on the basis of the political thought of Immanuel Kant, Thomas Hobbes, and Niccolò Machiavelli. Taking as its starting point Josep Borrell’s comment that “we are too much Kantians and not enough Hobbesians” at the 2022 EU Ambassadors’ Conference, this Insight offers a revisionist interpretation of both Kant and Hobbes while suggesting Machiavelli as a third possible inspiration for EU external action. Although he is often (...) portrayed as a proto-“realist” intent on increasing state power, Hobbes in reality favours stability above all else and would therefore presumably not support a more “aggressive” foreign policy. Kant, on the other hand, has traditionally been seen as more of a philosophical idealist, but his political philosophy in fact supports a more assertive conduct by states in their external relations. Both of these philosophers are thus quite different from how Borrell portrays them. The Insight also introduces the perspective of a third thinker, Machiavelli, whose philosophy suggests that the EU should adopt a pragmatic diplomatic strategy, forging alliances, supplying Ukraine with weapons, and maintaining strong ties with allies. (shrink)

When interpreting the meanings of visual features in information visualizations, observers have expectations about how visual features map onto concepts (inferred mappings.) In this study, we examined whether aspects of inferred mappings that have been previously identified for colormap data visualizations generalize to a different type of visualization, Venn diagrams. Venn diagrams offer an interesting test case because empirical evidence about the nature of inferred mappings for colormaps suggests that established conventions for Venn diagrams are counterintuitive. Venn diagrams represent classes (...) using overlapping circles and express logical relationships between those classes by shading out regions to encode the concept of non-existence, or none. We propose that people do not simply expect shading to signify non-existence, but rather they expect regions that appear as holes to signify non-existence (the hole hypothesis.) The appearance of a hole depends on perceptual properties in the diagram in relation to its background. Across three experiments, results supported the hole hypothesis, underscoring the importance of configural processing for interpreting the meanings of visual features in information visualizations. (shrink)

This special issue aims to explore what is educational in the seemingly humble gesture of making notes: not only how and why the practice of note-taking is educative in and of itself, but also what it says about education as such. The contributions to the issue each highlight different aspects of note-making and approach it differently, but all assume that note-making is an educational practice that merits philosophical study. Interestingly, they mostly focus on note-making as a non-digital practice (putting aside (...) the use of laptops for note-making in class), perhaps because most were written prior to the great digitisation ushered in by educational institutions’ responses to the COVID-19 pandemic. Let us first address how we see the different aspects of note-making highlighted by the contributions to the issue. (shrink)

This is review of the book "Rightful Relations with Distant Strangers: Kant, the EU, and the Wider World" by Aravind Ganesh, which discusses the relevance of Immanuel Kant's legal philosophy for the European Union's exercise of extraterritorial jurisdiction. The book explores this issue from the perspectives of public international law and private law theory as well.

he relationship between decadence and aesthetics is an intimate and complex one. Both the stock figure of the aesthete and the aestheticism of ‘art for art’s sake’ are classic decadent tropes with obvious sources in figures such as Théophile Gautier, Walter Pater, Joris-Karl Huysmans. Yet the links between aesthetics and decadence are more conflicted than might first appear: historically, aesthetics has served both as a site for the theorisation of decadence and as the basis of an attempt to stem (...) it. The purpose of this chapter is to examine these intricate ties. (shrink)