Information theory and statistical mechanics.

Information theory and statistical mechanics II.

Many statistical problems, including some of the most important for physical applications, have long been regarded as underdetermined from the standpoint of a strict frequency definition of probability; yet they may appear wellposed or even overdetermined by the principles of maximum entropy and transformation groups. Furthermore, the distributions found by these methods turn out to have a definite frequency correspondence; the distribution obtained by invariance under a transformation group is by far the most likely to be observed experimentally, in the (...) sense that it requires by far the least “skill.” These properties are illustrated by analyzing the famous Bertrand paradox. On the viewpoint advocated here, Bertrand's problem turns out to be well posed after all, and the unique solution has been verified experimentally. We conclude that probability theory has a wider range of useful applications than would be supposed from the standpoint of the usual frequency definitions. (shrink)

Of course, the rationale of PME is so different from what has been taught in “orthodox” statistics courses for fifty years, that it causes conceptual hangups for many with conventional training. But beginning students have no difficulty with it, for it is just a mathematical model of the natural, common sense way in which anybody does conduct his inferences in problems of everyday life.The difficulties that seem so prominent in the literature today are, therefore, only transient phenomena that will disappear (...) automatically in time. Indeed, this revolution in our attitude toward inference is already an accomplished fact among those concerned with a few specialized applications; with a little familarity in its use its advantages are apparent and it no longer seems strange. It is the idea that inference was once thought to be tied to frequencies in random experiments, that will seem strange to future generations. (shrink)

The interrelations of science and technology as an object of study seem to have drawn the attention of a number of disciplines: the history of both science and technology, sociology, economics and economic history, and even the philosophy of science. The question that comes to mind is whether the phenomenon itself is new or if advances in the disciplines involved account for this novel interest, or, in fact, if both are intercon nected. When the editors set out to plan this (...) volume, their more or less explicit conviction was that the relationship of science and technology did reveal a new configuration and that the disciplines concerned with 1tS analysis failed at least in part to deal with the change because of conceptual and methodological preconceptions. To say this does not imply a verdict on the insufficiency of one and the superiority of any other one disciplinary approach. Rather, the situation is much more complex. In economics, for example, the interest in the relationship between science and technology is deeply influenced by the theoretical problem of accounting for the factors of economic growth. The primary concern is with technology and the problem is whether the market induces technological advances or whether they induce new demands that explain the subsequent diffusion of new technologies. Science is generally considered to be an exogenous factor not directly subject to market forces and, therefore, appears to be of no interest. (shrink)

What precisely, W. J. T. Mitchell asks, are pictures (and theories of pictures) doing now, in the late twentieth century, when the power of the visual is said to be greater than ever before, and the "pictorial turn" supplants the "linguistic turn" in the study of culture? This book by one of America's leading theorists of visual representation offers a rich account of the interplay between the visible and the readable across culture, from literature to visual art to the (...) mass media. (shrink)

"[Mitchell] undertakes to explore the nature of images by comparing them with words, or, more precisely, by looking at them from the viewpoint of verbal language.... The most lucid exposition of the subject I have ever read."—Rudolf Arnheim, _Times Literary Supplement_.

In video games, identification with avatars—virtual entities or characters driven by human behavior—has been shown to serve many interpersonal and intraindividual functions but our understanding of the psychological variables that influence players' avatar choices remains incomplete. The study presented in this paper tested whether players' preferred style of avatar creation is linked to the magnitude of self-perceived discrepancies between who they are, who they aspire to be, and who they think they should be. One-hundred-and-twenty-five undergraduate gamers indicated their preferred avatar (...) creation style and completed a values measure from three different perspectives: their actual, ideal, and ought selves. The average actual/ideal values discrepancy was greater among those who preferred idealized avatars vs. those who preferred realistic avatars. The average actual/ought values discrepancy was greater among those who preferred completely different avatars vs. those who preferred realistic avatars. These results, therefore, offer additional evidence that self-discrepancy theory is a useful framework for understanding avatar preferences. (shrink)

A large proportion of hospital inpatients are affected by cognitive impairment, posing challenges in the provision of their care in busy, fast-paced acute wards. Signs and symbols, known as visual identifiers, are employed in many U.K. hospitals with the intention of helping healthcare professionals identify and respond to the needs of these patients. Although widely considered useful, these tools are used inconsistently, have not been subject to full evaluation, and attract criticism for acting as a shorthand for a routinized response. (...) In order for visual identifiers to be used effectively in acute care settings, thorough consideration must be given to the ethical and legal issues that are engaged in this context, and their potential benefits and harms must be weighed and balanced. This paper proposes a set of legal and ethical principles that can be used to guide the implementation of visual identifiers. Together, these principles provide a framework applicable in the design and implementation phases to systematically identify relevant considerations arising from the use of these tools. We outline some tensions that arise between principles and conclude that selecting a preferred moral framework could help to guide decision-making, as does clarity around the purpose and objectives of the identifier. (shrink)

The polymath Michael Polanyi first made his mark as a physical chemist, but his interests gradually shifted to economics, politics, and philosophy, in which field he would ultimately propose a revolutionary theory of knowledge that grew out of his firsthand experience with both the scientific method and political totalitarianism. In this sixth entry in ISI Books’ Library of Modern Thinkers’ series, Mark T. Mitchell reveals how Polanyi came to recognize that the roots of the modern political and spiritual crisis (...) lay in an errant conception of knowledge that served to foreclose any possibility of making meaningful statements about truth, goodness, or beauty. Polanyi’s theory of knowledge as ineluctably personal but also grounded in reality is not merely of historical interest, writes Mitchell, for it proposes an attractive alternative for anyone who would reject both the hubris of modern rationalism and the ultimately nihilistic implications of academic postmodernism. (shrink)

The huge amounts spent on store security and crime prevention worldwide, not only costs international businesses, but also amounts to a hidden tax on those law-binding consumers who bear higher prices. Most previous research has focused on shoplifting and ignored many other ways in which consumers cheat businesses. Using a hybrid of both qualitative research and survey approaches in four countries, an index of 37 activities was developed to examine consumers’ unethical activities across UK, US, France, and Austria. The findings (...) indicate that around three quarters of consumers in all four countries can be classified as heavy offenders for these minor cheats. The paper argues that government agencies, marketers, and retailers should adopt more pro-active preventative approaches, rather than reactive loss limitation measures to combat unethical behavior. (shrink)

A Marriage Made in Hell Where did they come from, these furiously self-righteous “social justice warriors”? The growing radicalism and intolerance on the American left is the result of the strange union of Nietzsche’s “will to power” and a secularized Puritan moralism. In this penetrating study, Mark T. Mitchell explains how this marriage made in hell gave birth to a powerful and destructive political and social movement. Having declared that “God is dead,” Friedrich Nietzsche identified the “will to power” (...) as the fundamental force of human life. There is no good or evil in a Nietzschean world—only the interests of the strong. Reason and the common good have no place there. The Puritan, by contrast, is morally rigorous, zealous to promote virtue and punish vice. America’s Puritan tradition, now thoroughly de-Christianized, has been reduced to a self-righteous moral absolutism that focuses on the faults of others, intent on avenging the sins of society, institutions, and the past in pursuit of the secularized ideals of equality, diversity, and social justice. As Nietzsche’s ideas have permeated our culture, a new generation of radicals has embraced the rhetoric and tactics of the will to power. But the strength of America’s residual Puritanism keeps them only half-baked Nietzscheans. More Christian than they care to admit, they cling to a moralism that Nietzsche would despise. The incoherence of their mixed creed dooms social justice warriors to perpetual frustration. Their identity politics generates ever more radical demands that can never be satisfied, further fracturing a society in desperate need of a unifying myth. We seem to be left with only two options, Mitchell concludes—Nietzsche or Christ, the will to power or the will to truth. The choice is bracingly simple. (shrink)