In the law, it is generally acknowledged that there are intuitive differences between reasoning with rules and reasoning with principles. For instance, a rule seems to lead directly to its conclusion if its condition is satisfied, while a principle seems to lead merely to a reason for its conclusion. However, the implications of these intuitive differences for the logical status of rules and principles remain controversial.A radical opinion has been put forward by Dworkin (1978). The intuitive differences led him to (...) argue for a strict logical distinction between rules and principles. Ever since, there has been a controversy whether the intuitive differences between rules and principles require a strict logical distinction between the two. For instance, Soeteman (1991) disagrees with Dworkin's opinion, and argues that rules and principles cannot be strictly distinguished, and do not have a different logical structure. (shrink)

This commentary discusses three main requirements for models of vision, namely, translation and scale invariance, scalability, and hierarchy. Edelman's Chorus model falls short of fulfilling these requirements because it ignores the highly dynamic nature of vision. Incorporating an attentional mechanism and assuming geon-like prototype representations may enhance Chorus's plausibility as a model of human object recognition.

There has been much talk of the need to build intermediate models of the expertise required preparatory to constructing a knowledge-based system in the legal domain. Such models offer advantages for verification, validation, maintenance and reuse. As yet, however, few such models have been reported at a useful level of detail. In this paper we describe a method for conceptualising legal domains as well as its application to a substantial fragment of the Dutch Unemployment Benefits Act (DUBA).We first discuss the (...) intermediate models (called expertise models), then present a three-stage method for their construction, drawing on the CommonKADS work in knowledge acquisition, conceptual models of statute law, and the KANT method of knowledge analysis. Subsequently, we describe how these techniques were applied to the DUBA, and provide detailed examples of the resulting model. Finally, conclusions on the framework and guidelines are given as well as means of recording and presenting the various design choices. (shrink)

We explored the possibility of a general brightness bias: brighter pictures are evaluated more positively, while darker pictures are evaluated more negatively. In Study 1 we found that positive pictures are brighter than negative pictures in two affective picture databases (the IAPS and the GAPED). Study 2 revealed that because researchers select affective pictures on the extremity of their affective rating without controlling for brightness differences, pictures used in positive conditions of experiments were on average brighter than those used in (...) negative conditions. Going beyond correlational support for our hypothesis, Studies 3 and 4 showed that brighter versions of neutral pictures were evaluated more positively than darker versions of the same picture. Study 5 revealed that people categorised positive words more quickly than negative words after a bright picture prime, and vice versa for negative pictures. Together, these studies provide strong support for the hypotheses that picture brightness influences evaluations. (shrink)

Prolonged trunk flexion is known to affect passive and active stabilization of the trunk. Previous studies have evaluated changes in spinal range of motion, muscle activity and reflex behavior induced by prolonged trunk flexion, whereas the effect on sitting postural control is vastly underexplored. In this study, we compared the effects of supported and unsupported intermittent trunk flexion on center of pressure motion during sitting on an unstable seat. Participants were exposed to 1-h intermittent trunk flexion and CoP root mean (...) square distance, velocity and frequency before and after the exposure were assessed. Contrary to our hypothesis, there were no main effects of exposure, no main effects of condition, and no interaction between exposure and condition. Our results indicate that prolonged intermittent flexion does not induce any changes in CoP motion during a seated balance task, regardless of the presence of a trunk support during prolonged intermittent flexion. This suggests a successful compensation of decreased passive stiffness by increased reflex activity. (shrink)

This ground-breaking study offers the first full-length critical examination of H. Diel's Doxographi Graeci , focussing on the doxographer Aëtius, whose work Diels reconstructed from various later sources. Diel's theory is analysed, revised and improved at significant points.

In this paper I try to make as much sense aspossible of, first, the extensive philosophicalliterature concerned with the status of `Wateris H2O' and, second, the implications ofPutnam's invention of Twin Earth, anotherpossible world stipulated to be just like Earth, except that water is XYZ, notH2O.

Using the notorious bridge law “water is H 2 O” and the relation between molecular structure and quantum mechanics as examples, I argue that it doesn’t make sense to aim for specific definition(s) of intertheoretical or interdiscourse relation(s) between chemistry and physics (reduction, supervenience, what have you). Proposed definitions of interdiscourse and part-whole relations are interesting only if they provide insight in the variegated interconnected patchwork of theories and beliefs. There is “automatically” some sort of interdiscourse relation if different discourses (...) claim to have something to say about the same situation (event, system), which is the basis of (contingent) local supervenience relations, which, proper empirically support being provided, can be upgraded to ceteris paribus bridge laws. Because of the ceteris paribus feature, and the discourse dependence of event identification, there is at best only global supervenience of the “special sciences” on the physical (and of parts of physics on other parts of physics). (shrink)

Het Leids-Haags Allegorieënlexicon toont nieuwe perspectieven op de maatschappelijke werkelijkheid met een actuele duiding van vijftig kernthema’s uit de wetenschap. De auteurs zijn de duale promovendi en hun promotores van Leiden University Dual PhD Centre The Hague. Ze worden daarbij geïnspireerd door de metafoor van de grot van Plato: Waar ben ik? Waar sta ik? Welk beeld zie ik? Hoe kan ik dat begrijpen? Er ontstaan beeldende voorstellingen van begrippen waarin op zoek wordt gegaan naar de centrale gedachten die ten (...) grondslag liggen aan die begrippen. Zo wordt de veranderende wereld waargenomen met het besef dat we nooit kunnen weten of we de gehele werkelijkheid kunnen zien of begrijpen. De waarneming is afhankelijk van de zichtpositie die de waarnemer inneemt. Zo ontstaan verbeeldingen van waarnemingen van ons menselijk bestaan. Zoals: assimilatie, creativiteit, gender, kunstenaarschap, magistraat, participatie, regels, tragedie en verzorgingsstaat. Eerst wordt actuele literatuur besproken. Daarna volgt discussie. Tenslotte neemt de auteur positie in. Met bijdragen van promotores Wilfried Admiraal, Ingrid van Biezen, Hans Borgman, Paul Cliteur, Jaap van den Herik, Rikki Holtmaat, Willem Otterspeer, Jos Raadschelders, Robert Tijssen, Wim Willems en promovendi. (shrink)

Originally published in 1936, this book presents the ancient Greek text of the paraphrases and quotations of Zeno's philosophical arguments, together with a facing-page English translation and editorial commentary. Detailed notes are incorporated throughout and a bibliography is also included. This book will be of value to anyone with an interest in Zeno and ancient philosophy.

Enrico Berti has had a profound influence on the birth and development of Italian studies in ancient philosophy. His sizable work has shaped a great part of Italian studies on Aristotle and other ancient philosophers. To celebrate him and express their gratitude for his work, some of his disciples, under the impulse of the late Franco Volpi, have brought together a volume in his honour, requesting the participation of some foreign scholars particularly close to him. The volume comprises essays by (...) Pierre Aubenque, Jonathan Barnes, Terence H. Irwin, Tomás Calvo-Martínez, Jaap Mansfeld, Pierre Pellegrin, Gerhard Seel and Alejandro G. Vigo. The main themes are Aristotle's metaphysics and practical philosophy. A Selected Bibliography by E. Berti himself completes the volume."--Publisher's website. (shrink)

A full account of the philosophy of the Greek and Roman worlds from the last days of Aristotle until 100 BC. Hellenistic philosophy, for long relatively neglected and unappreciated, has over the last decade been the object of a considerable amount of scholarly attention. Now available in paperback, this 1999 volume is a general reference work which pulls the subject together and presents an overview. The History is organised by subject, rather than chronologically or by philosophical school, with sections on (...) logic, epistemology, physics and metaphysics, ethics and politics. It has been written by specialists but is intended to be a source of reference for any student of ancient philosophy, for students of classical antiquity and for students of the philosophy of later periods. Greek and Latin are used sparingly and always translated in the main text. (shrink)

Robots are slowly, but certainly, entering people's professional and private lives. They require the attention of regulators due to the challenges they present to existing legal frameworks and the new legal and ethical questions they raise. This paper discusses four major regulatory dilemmas in the field of robotics: how to keep up with technological advances; how to strike a balance between stimulating innovation and the protection of fundamental rights and values; whether to affirm prevalent social norms or nudge social norms (...) in a different direction; and, how to balance effectiveness versus legitimacy in techno-regulation. The four dilemmas are each treated in the context of a particular modality of regulation: law, market, social norms, and technology as a regulatory tool; and for each, we focus on particular topics? such as liability, privacy, and autonomy? that often feature as the major issues requiring regulatory attention. The paper then highlights the role and potential of the European framework of rights and values, responsible research and innovation, smart regulation and soft law as means of dealing with the dilemmas. (shrink)

Commentators are divided on the interpretation of Metaphysics Z4 1029b13–22. For one thing, it is unclear whether the passage rejects a claim about the essence of surface, or about the essence of pale. It is usually thought that the claim is disavowed because it involves a circular definition. However, this is conjectural, since Aristotle does not explicitly say anything about circularity in the lines in question. I argue here for an alternative account, which reads the disputed lines as an extension (...) of the immediately preceding remarks. If correct, this also solves the problem as to just what Aristotle is denying. As will emerge, my story is helped by St. Thomas’ reading of lines 21–22, an account that has been curiously ignored in the recent literature. (shrink)

It has been claimed that the earliest expression of a robust scepticism is in the Catalogue of Ships in theIliad, and even commentators who would not go that far have thought the passage an important guide to epistemological attitudes in Homeric antiquity. It will be argued here that a close examination of the text does not support such conclusions. On the other hand, there are respectable reasons for an interpretation in which religious factors are operative, rather than epistemic ones. The (...) conclusion to be drawn is that the epistemic reading is groundless. (shrink)

This handbook offers a deep analysis of the main forms of legal reasoning and argumentation from both a logical-philosophical and legal perspective. These forms are covered in an exhaustive and critical fashion, and the handbook accordingly divides in three parts: the first one introduces and discusses the basic concepts of practical reasoning. The second one discusses the main general forms of reasoning and argumentation relevant for legal discourse. The third one looks at their application in law as well as at (...) the different areas of legal reasoning. The handbook’s division in three parts reflects its conceptual architecture, since legal reasoning and argumentation are considered in relation to the more general types of reasoning. (shrink)