We revisit the analogy suggested by Madelung between a non-relativistic time-dependent quantum particle, to a fluid system which is pseudo-barotropic, irrotational and inviscid. We first discuss the hydrodynamical properties of the Madelung description in general, and extract a pressure like term from the Bohm potential. We show that the existence of a pressure gradient force in the fluid description, does not violate Ehrenfest’s theorem since its expectation value is zero. We also point out that incompressibility of the fluid implies conservation (...) of density along a fluid parcel trajectory and in 1D this immediately results in the non-spreading property of wave packets, as the sum of Bohm potential and an exterior potential must be either constant or linear in space. Next we relate to the hydrodynamic description a thermodynamic counterpart, taking the classical behavior of an adiabatic barotopric flow as a reference. We show that while the Bohm potential is not a positive definite quantity, as is expected from internal energy, its expectation value is proportional to the Fisher information whose integrand is positive definite. Moreover, this integrand is exactly equal to half of the square of the imaginary part of the momentum, as the integrand of the kinetic energy is equal to half of the square of the real part of the momentum. This suggests a relation between the Fisher information and the thermodynamic like internal energy of the Madelung fluid. Furthermore, it provides a physical linkage between the inverse of the Fisher information and the measure of disorder in quantum systems—in spontaneous adiabatic gas expansion the amount of disorder increases while the internal energy decreases. (shrink)

The Madelung equations map the non-relativistic time-dependent Schrödinger equation into hydrodynamic equations of a virtual fluid. While the von Neumann entropy remains constant, we demonstrate that an increase of the Shannon entropy, associated with this Madelung fluid, is proportional to the expectation value of its velocity divergence. Hence, the Shannon entropy may grow due to an expansion of the Madelung fluid. These effects result from the interference between solutions of the Schrödinger equation. Growth of the Shannon entropy due to expansion (...) is common in diffusive processes. However, in the latter the process is irreversible while the processes in the Madelung fluid are always reversible. The relations between interference, compressibility and variation of the Shannon entropy are then examined in several simple examples. Furthermore, we demonstrate that for classical diffusive processes, the “force” accelerating diffusion has the form of the positive gradient of the quantum Bohm potential. Expressing then the diffusion coefficient in terms of the Planck constant reveals the lower bound given by the Heisenberg uncertainty principle in terms of the product between the gas mean free path and the Brownian momentum. (shrink)

The actualism/possibilism debate in ethics is traditionally formulated in terms of whether true counterfactuals of freedom about the future (true subjunctive conditionals concerning what someone would freely do in the future if they were in certain circumstances) even partly determine an agent's present moral obligations. But the very assumption that there are true counterfactuals of freedom about the future conflicts with the idea that freedom requires a metaphysically open future. We develop probabilism as a solution to the actualism/possibilism debate, a (...) solution that accommodates an open future requirement for freedom. We argue that probabilism resolves the conflicting intuitions that arise between actualists and possibilists and maintains certain distinct advantages over actualism and possibilism. (shrink)

Most Probably: Epistemic Modality in Old Babylonian by Nathan Wasserman is the first attempt to provide a description of the domain of epistemic modality in Old Babylonian Akkadian. This attempt is not entirely successful, for several reasons. Methodological inconsistency often impairs the author’s ability to convince the reader of his solutions. Both primary data and existing secondary literature are used only selectively, which renders the proposed description problematic. Finally, the lack of cross-referencing between the chapters evokes the feeling that the (...) different particles do not quite constitute a system. (shrink)

In Mindblindness, Simon Baron-Cohen presents a model of the evolution and development of "mindreading." He argues that we mindread all the time, effortlessly, automatically, and mostly unconsciously. It is the natural way in which we interpret, predict, and participate in social behavior and communication. We ascribe mental states to people: states such as thoughts, desires, knowledge, and intentions. Building on many years of research, Baron-Cohen concludes that children with autism, suffer from "mindblindness" as a result of a selective (...) impairment in mindreading. For these children, the world is essentially devoid of mental things. Baron-Cohen develops a theory that draws on data from comparative psychology, from developmental, and from neuropsychology. He argues that specific neurocognitive mechanisms have evolved that allow us to mindread, to make sense of actions, to interpret gazes as meaningful, and to decode "the language of the eyes." A Bradford Book. (shrink)

This paper discusses literacy as a socio-political phenomenon from the perspective of several relatively independent educational discourses. The first is critical education theory and research revealing the hidden mechanisms by which education policies act in the interests of a global market economy. The second is the perspective of critical pedagogy scholars on contemporary educational challenges, who offer responses similar to those discussed in current discourse on informal civic education. The third is the heated discussion of high-stakes literacy testing (related to (...) OECD literacy studies such as PISA, IALS, etc.) the results of which are used as a source of argumentation for diverse attitudes and educational consequences. Based on an analysis of literacy theory, research on active citizenship and civic education, the term “civic literacy” is proposed and argued as a relevant conceptual frame for conceptualizing school as an institution which can be involved in resistance to all forms of power politics or ideological indoctrination and manipulation, while at the same time, respecting the traditional values and aims of general education. (shrink)

We use a new model of metarepresentational development to predict a cognitive deficit which could explain a crucial component of the social impairment in childhood autism. One of the manifestations of a basic metarepresentational capacity is a ‘ theory of mind ’. We have reason to believe that autistic children lack such a ‘ theory ’. If this were so, then they would be unable to impute beliefs to others and to predict their behaviour. This hypothesis was tested using Wimmer (...) and Perner’s puppet play paradigm. Normal children and those with Down’s syndrome were used as controls for a group of autistic children. Even though the mental age of the autistic children was higher than that of the controls, they alone failed to impute beliefs to others. Thus the dysfunction we have postulated and demonstrated is independent of mental retardation and specific to autism. (shrink)

This book provides an analytical and critical appraisal of Rousseau's political thought that, while frank about its limits, also explains its enduring power.

Why is a red face not really red? How do we decide that this book is a textbook or not? Conceptual spaces provide the medium on which these computations are performed, but an additional operation is needed: Contrast. By contrasting a reddish face with a prototypical face, one gets a prototypical ‘red’. By contrasting this book with a prototypical textbook, the lack of exercises may pop out. Dynamic contrasting is an essential operation for converting perceptions into predicates. The existence of (...) dynamic contrasting may contribute to explaining why lexical meanings correspond to convex regions of conceptual spaces. But it also explains why predication is most of the time opportunistic, depending on context. While off-line conceptual similarity is a holistic operation, the contrast operation provides a context-dependent distance that creates ephemeral predicative judgments that are essential for interfacing conceptual spaces with natural language and with reasoning. (shrink)

An examination of the controversial "theory of mind" hypothesis, which states that children with autism are unable to comprehend other people's mental states. The theory relates to the most fundamental questions of normal development as well as to autism i.

A new English translation of the founding text of the Madhyamaka (Middle Way) school of Buddhism, with the Tibetan version of the text included. The Root Stanzas holds an honored place in all branches of Tibetan Buddhism, as well as in the Buddhist traditions found in China, Japan, and Korea, because of the way it develops the seminal view of emptiness (shunyata), which is crucial to understanding Mahayana Buddhism and central to its practice. It is prized for its pithy and (...) pointed arguments that show that things lack intrinsic being and thus are “empty” (shunya). They abide in the Middle Way, free from the extremes of permanence and annihilation. (shrink)

In these writings by one of our most creative legal philosophers, Meir Dan-Cohen explores the nature of the self and its response to legal commands and mounts a challenge to some prevailing tenets of legal theory and the neighboring moral, political, and economic thought. The result is an insider's critique of liberalism that extends contemporary liberalism's Kantian strand, combining it with postmodernist ideas about the contingent and socially constructed self to build a thoroughly original perspective on some of the (...) most vital concerns of legal and moral theory.Dan-Cohen looks first at the ubiquity of legal coercion and considers its decisive impact on the nature of legal discourse and communication, on law's normative aspirations and claim to obedience, and on the ideal of the rule of law. He moves on to discuss basic values, stressing the preeminence of individual identity and human dignity over the more traditional liberal preoccupations with preference-based choice and experiential harm. Dan-Cohen then focuses more directly on the normative ramifications of the socially constructed self. Fundamental concepts such as responsibility and ownership are reinterpreted to take account of the constitutive role that social practices--particularly law and morality--play in the formation of the self.Throughout, Dan-Cohen draws on a uniquely productive mix of philosophical traditions and subjects, blending the methods of analytic philosophy with the concerns of Continental philosophers to reconceive the self and its relation to ethics and the law. (shrink)

Proceedings of the Boston Colloquium for the Philosophy of Science 1969/1972.

Abstract:This essay responds to Patricia Werhane’s 1994 Ruffin Lecture address, “Moral Imagination and the Search for Ethical Decision-making in Management,” using institutional theory as an analytical framework to explore conditions that either inhibit or promote moral imagination in organizational problem-solving. Implications of the analysis for managing organizational change and for business ethics theory development are proposed.

Modern science is, to a large extent, a model-building activity. But how are models contructed? How are they related to theories and data? How do they explain complex scientific phenomena, and which role do computer simulations play here? These questions have kept philosophers of science busy for many years, and much work has been done to identify modeling as the central activity of theoretical science. At the same time, these questions have been addressed by methodologically-minded scientists, albeit from a different (...) point of view. While philosophers typically have an eye on general aspects of scientific modeling, scientists typically take their own science as the starting point and are often more concerned with specific methodological problems. There is, however, also much common ground in middle, where philosophers and scientists can engage in a productive dialogue, as the present volume demonstrates. To do so, the editors of this volume have invited eight leading scientists from cosmology, climate science, social science, chemical engeneering and neuroscience to reflect upon their modeling work, and eight philosophers of science to provide a commentary. (shrink)