Head stabilization is fundamental for balance during locomotion but can be impaired in elderly or diseased populations. Previous studies have identified several parameters of head stability with possible diagnostic value in a laboratory setting. Recently, the ecological validity of measures obtained in such controlled contexts has been called into question. The aim of this study was to investigate the ecological validity of previously described parameters of head stabilization in a real-world setting. Ten healthy subjects participated in the study. Head and (...) trunk movements of each subject were recorded with inertial measurement units (IMUs) for a period of at least ten hours. Periods of locomotion were extracted from the measurements and predominant frequencies, root mean squares (RMSs) and bout lengths were estimated. As parameters of head stabilization, attenuation coefficients (ACs), harmonic ratios (HRs), coherences and phase differences were computed. Predominant frequencies were distributed tightly around 2 Hz and ACs, HRs and coherences exhibited the highest values in this frequency range. All head stability parameters exhibited characteristics consistent with previous reports, although higher variances were observed. These results suggest that head stabilization is tuned to the 2 Hz fundamental frequency of locomotion and that previously described measures of head stability could generalize to a real-world setting. This is the first study to address the ecological validity of these measures, highlighting the potential use of head stability parameters as diagnostic tools or outcome measures for clinical trials. The low cost and ease of use of the IMU technology used in this study could additionally be of benefit for a clinical application. (shrink)

To all appearances, the basic building blocks of reality tend to keep existing unless something intervenes to destroy them. In other words, basic things seem to have existential inertia. But why might this be? This paper considers a number of arguments for and against existential inertia. It discusses arguments inspired by Aquinas, Descartes, and Spinoza, as well as considerations deriving from Occam’s Razor, entropy, and certain views about the nature of time and change.

There have been a number of attempts to apply mechanism-related concepts to the notion of extended cognition. Such accounts appeal to the idea that extended cognitive routines are realized by mechanisms that transcend some salient border or boundary. The present paper describes some of the challenges confronting the effort to develop a mechanistic account of extended cognition. In particular, it describes five problems that must be resolved if we are to make sense of the idea that extended cognition can be (...) understood via an appeal to extended mechanisms. These problems are intended to guide the philosophical effort to develop a mechanistic account of extended cognition. (shrink)

This article explores the notion of the Web-extended mind, which is the idea that the technological and informational elements of the Web can sometimes serve as part of the mechanistic substrate that realizes human mental states and processes. It is argued that while current forms of the Web may not be particularly suited to the realization of Web-extended minds, new forms of user interaction technology as well as new approaches to information representation do provide promising new opportunities for Web-based forms (...) of cognitive extension. In addition, it is suggested that extended cognitive systems often rely on the emergence of social practices and conventions that shape how a technology is used. Web-extended minds may thus depend on forms of socio-technical co-evolution in which social forces and factors play just as important a role as do the processes of technology design and development. (shrink)

Mandevillian intelligence is a specific form of collective intelligence in which individual cognitive vices are seen to play a positive functional role in yielding collective forms of cognitive success. The present paper introduces the concept of mandevillian intelligence and reviews a number of strands of empirical research that help to shed light on the phenomenon. The paper also attempts to highlight the value of the concept of mandevillian intelligence from a philosophical, scientific and engineering perspective. Inasmuch as we accept the (...) notion of mandevillian intelligence, then it seems that the cognitive and epistemic value of a specific social or technological intervention will vary according to whether our attention is focused at the individual or collective level of analysis. This has a number of important implications for how we think about the design and evaluation of collective cognitive systems. For example, the notion of mandevillian intelligence forces us to take seriously the idea that the exploitation of individual cognitive shortcomings could, in some situations, provide a productive route to collective forms of cognitive and epistemic success. (shrink)

Using astrology as a case study, this paper attempts to establish a criterion for demarcating science from pseudoscience. Numerous reasons for considering astrology to be a pseudoscience are evaluated and rejected; verifiability and falsifiability are briefly discussed. A theory is said to be pseudoscientific if and only if (1) it has been less progressive than alternative theories over a long period of time, and faces many unsolved problems, but (2) the community of practitioners makes little attempt to develop the theory (...) towards solutions of the problems, shows no concern for attempts to evaluate the theory in relation to others, and is selective in considering confirmations and disconfirmations. This criterion has the interesting consequence that a theory can be scientific at one time but pseudoscientific at another. (shrink)

"Evidence of a flight from reason is as old as human record-keeping: the fact of it certainly goes back an even longer way. Flight from science specifically, among the forms of rational inquiry, goes back as far as science itself... But rejection of reason is now a pattern to be found in most branches of scholarship and in all the learned professions."--from the introduction In the widely acclaimed Higher Superstition: The Academic Left and Its Quarrels with Science, Paul R. (...) Gross and Norman Levitt offered a spirited response to the "science bashers," raising serious questions about the growing criticism of scientific practice from humanists and social scientists on the academic left. Now, in The Flight from Science and Reason, Gross and Levitt are joined by Martin W. Lewis to bring together a diverse and distinguished group of scholars, scientists, and experts to engage these questions from a wide variety of perspectives. The authors take on critics of science whose views range from moderate to extreme, from social constructivists to deconstructionists, from creationists and feminists to Afro-centrists. They discuss the rise of "alternative medicine" and radical environmentalism (here skewered as "ecosentimentalism"). They explain why the "uncertainty principle" does not work as a metaphor for ambiguity, and why "chaos theory" cannot be invoked without an understanding of mathematics. Throughout, they grapple with the paradox inherent in arguing with opponents who contend that reason itself, and thus logic, is suspect. Distributed for the New York Academy of Sciences. (shrink)

The U.S. Constitution provides a framework for our laws, but what does it have to say about morality? Paul DeHart ferrets out that document’s implicit moral assumptions as he revisits the notion that constitutions are more than merely practical institutional arrangements. In _Uncovering the Constitution’s Moral Design_, he seeks to reveal, elaborate, and then evaluate the Constitution’s normative framework to determine whether it is philosophically sound—and whether it makes moral assumptions that correspond to reality. Rejecting the standard approach of (...) the intellectual historian, DeHart for the first time in constitutional theory applies the method of inference to the best explanation to ascertaining our Constitution’s moral meaning. He distinguishes the Constitution’s intention from the subjective intentions of the framers, teasing out presuppositions that the document makes about the nature of sovereignty, the common good, natural law, and natural rights. He then argues that the Constitution constrains popular sovereignty in a way that entails a real common good, transcendent of human willing and promotive of human well-being, but he points out that while the Constitution presupposes a real common good, it also implies a natural law that prescribes the common good. In critiquing previous attempts at describing and evaluating the Constitution’s normative framework, DeHart demonstrates that the Constitution’s moral framework corresponds largely to classical moral theory. He challenges the logical coherency of modern moral philosophy, normative positivism, and other theories that the Constitution has been argued to embody and offers a groundbreaking methodology that can be applied to uncovering the normative framework of other constitutions as well. This cogently argued study shows that the Constitution presupposes a natural law to which human law must conform, and it takes a major step in resolving current debates over the Constitution’s normative framework while remaining detached from the social issues that divide today’s political arena. _Uncovering the Constitution’s Moral Design_ is an original approach to the Constitution that marks a significant contribution to understanding the moral underpinnings of our form of government. (shrink)

While the dominant approaches to the current study of political philosophy are various, with some friendlier to religious belief than others, almost all place constraints on the philosophic and political role of revelation. Mainstream secular political theorists do not entirely disregard religion. But to the extent that they pay attention, their treatment of religious belief is seen more as a political or philosophic problem to be addressed rather than as a positive body of thought from which we might derive important (...) insights about the nature of politics and the truth of the human condition. In a one-of-a-kind collection, DeHart and Holloway bring together leading scholars from various fields, including political science, philosophy, and theology, to challenge the prevailing orthodoxy and to demonstrate the role that religion can and does play in political life. Contributing authors include such important thinkers as Peter Augustine Lawler, Robert C. Koons, J. Budziszewski, Francis J. Beckwith, and James Stoner. (shrink)

This peer reviewed reference article is an annotated online bibliography on mereology with 80+ entries. It's aim is to provide a selective and balanced guide to the subject. It contains thematic headings with commentaries. The reader should come away cognizant of what the most influential work in mereology are. Topics highlighted herein include, but are not limited to: the history of mereology, classical extensional mereology and its challenges, parthood, connections with location relations, mereological simples and gunk, composition as identity, as (...) well as mereological essentialism, nihilism, and universalism. (shrink)

The difficulty about the naive realism which most people take for granted and which some empirical philosophers try to defend is that its proponents, in seeking to preserve the objective world of common sense, virtually read out of the picture the contribution of the perceiving subject and all that is involved in the relatedness of sense experience. The visual phenomena of perspective, distortion and hallucination, and the dependence of all other sense experience upon varying physiological factors in the percipient make (...) it well nigh impossible to believe that everything is just what we observe it to be; and the physicist's account of a world of electrical charges symbolized by mathematical formulae deals in conceptual terms which transcend sensual imagery. The resort to the sense-datum theory was but a desperate attempt on the part of philosophers to preserve the plain man's view of reality, though it left wholly obscure the relationship between the world of common sense experience and that of physical science, as well as positing a fantastic multiplication of entities corresponding to everything that could be observed under any circumstances. (shrink)

In The Langoliers, passengers on an airline flight wake to find that they’ve mysteriously travelled a few minutes back in time… a few minutes behind everyone else. They find that the world still exists, after ‘the present’ has moved on, but only for a short duration before the Langoliers—the timekeepers of eternity—arrive to remove it permanently from existence. This story prompts two interesting questions: How should we understand the nature of time in The Langoliers? Could the nature of time in (...) our world be the same as in The Langoliers? And, are the characters in The Langoliers really time travellers? In answering these questions, we can gain a greater understanding of the world depicted in The Langoliers, as well as of our own world. (shrink)

Early modern theorists linked the idea of sovereign power to a conception of absolute power developed during the medieval period. Ockham had reframed the already extant distinction between God's absolute and ordained powers in order to argue that God was free of moral constraint in ordaining natural law for human beings. Thus, the natural law could command the opposite of what God had ordained if He wished to make it so. Bodin extended Ockham's argument to earthly sovereigns, who do not (...) (he argued) have to obey civil law. However, Bodin undermined his absolutism by maintaining that civil law has to be consistent with natural and divine law. Hobbes more consistently argued that while mortal sovereigns are accountable to God, the power of sovereigns to command is not subject to moral constraints. Underlying Ockham's view of God's sovereignty, and Bodin's and Hobbes's view of earthly sovereigns, is a notion of the will's unconstrained power. But this notion is self-referentially incoherent. This incoherence, in turn, infects the very notion of sovereignty. (shrink)

H. L. A. Hart famously claimed that part of the appeal of natural law “doctrine” is the “independence” of natural law from divine and human authority. God, according to Hart, is not necessary to natural law. By way of contrast, J. Budziszewski argues that natural law really is law and that law qua law requires an enactor. Moreover, the only plausible candidate for the enactor of natural law as law is the author of nature—that is, God. In this essay I (...) argue that Budziszewski is right and Hart wrong. Law imposes obligations upon those under it, and obligations qua obligation are categorical rather than hypothetical imperatives. Categorical imperatives, in turn, require prescription. Consequently, prescription is necessary to any intelligible account of moral obligation. And prescription, finally, requires an authoritative prescriber. (shrink)

In Pagans & Christians in the City, Steven D. Smith argues that in contrast to ancient Rome, ancient Christianity, following Judaism, located the sacred outside the world, desacralizing the cosmos and everything in it—including the political order. It thereby introduced a political dualism and potentially contending allegiances. Although Smith’s argument is right so far as it goes, it underplays the role of Christianity’s immanent dimension in subverting the Roman empire and the sacral pattern of antiquity. This division of authority not (...) only undermined the Roman empire and antique sacral political order more generally—it also subverts the modern state, which, in the work of Hobbes and Rousseau, sought to remarry what Western Christianity divorced. (shrink)

Most scholars who write on social contract and classical natural law perceive an irreconcilable tension between them. Social contract theory is widely considered the political-theoretic concomitant of modern philosophy. Against the regnant view, The Social Contract in the Ruins, argues that all attempts to ground political authority and obligation in agreement alone are logically self-defeating. Political authority and obligation require an antecedent moral ground. But this moral ground cannot be constructed by human agreement or created by sheer will-human or divine. (...) All accounts of morality as constructed or made collapse into self-referential incoherence. Only an uncreated, real good can coherently ground political authority and obligation or the proposition that rightful government depends on the consent of the governed. Government by consent requires classical natural law for its very coherence. (shrink)

Many scholars view political contractarianism as a distinctly modern account of the foundations of political order. Ideas such as popular sovereignty, the right of revolution, the necessity of the consent of the governed for rightful political authority, natural equality, and a pre-civil state of nature embody the modern rupture with classical political philosophy and traditional Christian theology. At the headwaters of this modern revolution stands Thomas Hobbes. Since the American founders subscribed to the social contract theory, they are often said (...) to reject classical political philosophy and traditional Christian political theology as well. In America on Trial, Robert Reilly rejects the usual argument. He maintains that the building blocks of the American founding originate in medieval Christian political theology. In this essay, I argue that a morally and metaphysically realist contractarian tradition—one that affirms natural equality, the authority of the society over government, the necessity of consent for legitimate government, the right to resist tyrannical rulers, and the idea of a pre-civil state of nature—predates Hobbes and also that the voluntarist contractarian tradition inaugurated by Hobbes is self-referentially incoherent. A coherent political contractarianism logicially depends on the sort of metaphysics and moral ontology Hobbes rejects. (shrink)

In Why Liberalism Failed, Patrick Deneen contends that the American founding is fundamentally Hobbesian and that the Constitution is the application of the Hobbesian revolution concerning liberty and anthropology. I contend that Deneen fundamentally mischaracterizes the American founding. The founders and framers affirmed the necessity of consent for political authority and obligation. But they also situated the necessity of consent in the context of a morally and metaphysically realist natural law, maintained that an objective good of the whole constitutes the (...) final end of political association, and described liberty as subjection to the law of nature and the government of God. To be determined by one’s base passions was to be a slave. Moreover, their constitutional thought and the institutional design of the constitutions they built rejected Hobbes’s theory of sovereign power and the metaphysical ground on which it rests. (shrink)

__Augustine and the Cure of Souls __situates Augustine within the ancient philosophical tradition of using words to order emotions. Paul Kolbet uncovers a profound continuity in Augustine's thought, from his earliest pre-baptismal writings to his final acts as bishop, revealing a man deeply indebted to the Roman past and yet distinctly Christian. Rather than supplanting his classical learning, Augustine's Christianity reinvigorated precisely those elements of Roman wisdom that he believed were slipping into decadence. In particular, Kolbet addresses the manner (...) in which Augustine not only used classical rhetorical theory to express his theological vision, but also infused it with theological content. This book offers a fresh reading of Augustine's writings--particularly his numerous, though often neglected, sermons--and provides an accessible point of entry into the great North African bishop's life and thought. "For someone who does not know Augustine well this book will be an excellent introduction to his thought from an absolutely crucial viewpoint. Augustine's preaching, teaching, and attempts to reach the minds and hearts of his congregation have been largely overlooked. This book has the great virtue of demonstrating why these were important." --_Carol Harrison, Durham Universi_ty "In this insightful and lucid study Kolbet leads his readers across the boundaries of ancient philosophy, psychology, rhetoric, and theology. He examines the ancient practice of the 'cure of the soul' and charts its Christian appropriation by Augustine. The volume offers its own medicinal promise--the reordering of our contemporary understanding of early Christianity and its complex association with classical culture." --_John Peter Kenney, St. Michael's College_. (shrink)

According to proponents of the extended mind, bio-external resources, such as a notebook or a smartphone, are candidate parts of the cognitive and mental machinery that realises cognitive states and processes. The present chapter discusses three areas of ethical concern associated with the extended mind, namely mental privacy, mental manipulation, and agency. We also examine the ethics of the extended mind from the standpoint of three general normative frameworks, namely, consequentialism, deontology, and virtue ethics.

Since Plato, most philosophers have drawn a sharp line between reason and emotion, assuming that emotions interfere with rationality and have nothing to contribute to good reasoning. In his dialogue the Phaedrus, Plato compared the rational part of the soul to a charioteer who must control his steeds, which correspond to the emotional parts of the soul (Plato 1961, p. 499). Today, scientists are often taken as the paragons of rationality, and scientific thought is generally assumed to be independent of (...) emotional thinking. (shrink)

Substantially revised to include a wealth of new material, the second edition of this highly acclaimed work provides a concise, coherent introduction that brings structure to an increasingly fragmented and amorphous discipline. Paul R. McHugh and Phillip R. Slavney offer an approach that emphasizes psychiatry's unifying concepts while accommodating its diversity. Recognizing that there may never be a single, all-encompassing theory, the book distills psychiatric practice into four explanatory methods: diseases, dimensions of personality, goal-directed behaviors, and life stories. These (...) perspectives, argue the authors, underlie the principles and practice of all psychiatry. With an understanding of these fundamental methods, readers will be equipped to organize and evaluate psychiatric information and to develop a confident approach to practice and research. Praise for the original edition: "This brilliant book illuminates psychiatry more clearly than any other work I know.... This is the best (and the shortest) single volume on psychiatry that anyone could read."-- New England Journal of Medicine "Every psychiatry department, regardless of ideology, should build a course around this... work. Open-mindedness might become fashionable."-- Journal of Clinical Psychiatry "An elegantly reasoned and eloquently written book that enriches our understanding of clinical events.... [It provides] an opportunity to open our eyes to new possibilities."-- Hospital and Community Psychiatry. (shrink)

Philosophers of action have rarely systematically thought about acts of communication as special sorts of actions, nor have speech act theorists looked on the bearings of the general theory to action on linguistic acts. This dissertation represents an attempt to work seriously within precisely that intersection of action theory and speech act theory. Some problematic issues in both areas can, from this combined perspective, be reformulated more clearly than they have been previously articulated. ;The first part of the thesis examines (...) linguistic communication as a subspecies of action, formulating a unifying theoretical description of speech and action. The distinction between constitutive rules and regulative rules turns out to parallel a distinction between basic actions and nonbasic actions; I explore the usefulness of the concept of level-generation and basic actions in the context of the theory of linguistic communication, arguing for a conception of basic speech acts. ;The second part of the thesis provides a theory of demonstrative utterances. A demonstrative utterance is simply an utterance accompanied by a demonstrative gesture. The account offered supplies a speech act-like analysis of demonstrative as well as an action-theoretical analysis of the gestures which accompany demonstrative utterances. This theory addresses and answers many of the questions raised by Kaplan and passes beyond them to offer insight into the communicative aspects of demonstrative uses of expressions. I extend this analysis to cover the wider class of all utterances accompanied by relevant gestures as a prologue to the more comprehensive study of nonverbal communicative behavior. ;In the third part I show how the concepts of the unified theory developed in parts I and II, form the building blocks of a general theory of nonverbal communicative behavior. I examine the structure of statements about meaningful action and nonverbal behavior as well as the properties of the behavior itself. I argue that only accounts which include elements of both action theory and the theory of communication can successfully explain the nature of nonverbal communicative behavior as the sort of action that is properly said to be meaningful. (shrink)

Principles of Laser Spectroscopy and Quantum Optics is an essential textbook for graduate students studying the interaction of optical fields with atoms. It also serves as an ideal reference text for researchers working in the fields of laser spectroscopy and quantum optics. The book provides a rigorous introduction to the prototypical problems of radiation fields interacting with two- and three-level atomic systems. It examines the interaction of radiation with both atomic vapors and condensed matter systems, the density matrix and the (...) Bloch vector, and applications involving linear absorption and saturation spectroscopy. Other topics include hole burning, dark states, slow light, and coherent transient spectroscopy, as well as atom optics and atom interferometry. In the second half of the text, the authors consider applications in which the radiation field is quantized. Topics include spontaneous decay, optical pumping, sub-Doppler laser cooling, the Heisenberg equations of motion for atomic and field operators, and light scattering by atoms in both weak and strong external fields. The concluding chapter offers methods for creating entangled and spin-squeezed states of matter. Instructors can create a one-semester course based on this book by combining the introductory chapters with a selection of the more advanced material. A solutions manual is available to teachers. Rigorous introduction to the interaction of optical fields with atoms Applications include linear and nonlinear spectroscopy, dark states, and slow light Extensive chapter on atom optics and atom interferometry Conclusion explores entangled and spin-squeezed states of matter Solutions manual. (shrink)

This paper argues that questions concerning the nature of concepts that are central in cognitive psychology are also important to epistemology and that there is more to conceptual change than mere belief revision. Understanding of epistemic change requires appreciation of the complex ways in which concepts are structured and organized and of how this organization can affect belief revision. Following a brief summary of the psychological functions of concepts and a discussion of some recent accounts of what concepts are, I (...) propose a view of concepts as complex computational structures. This account suggests that conceptual change can come in varying degrees, with the most extreme consisting of fundamental conceptual reorganizations. These degrees of conceptual change are illustrated by the development of the concept of an acid. (shrink)

This chapter reviews the aspects of Mencius that did and did not interest Han-dynasty writers. With the help of digital concordances, it is easy to discover that many of the passages considered crucial today were rarely, if ever, cited in the Han. These include the parable of the infant about to fall into a well (2A.6), the debate with a Mohist named Yi Zhi 夷之 (3A.5), and the concept of liangzhi 良知 (7A.15), which, since Wang Yangming 王陽明 (1472–1528), has been (...) considered a cornerstone of Mencian ethics. The chapter discusses other key passages that are never mentioned in Han sources. Absence of evidence is not evidence of absence, and thus one cannot simply infer that these passages were unknown in the Han dynasty, but it remains significant that they were not regarded as essential to understanding Mencius’s philosophy. The conclusion will explore the differences between Mencius’s reception in the Han dynasty and his Neo-Confucianized reception today. (shrink)

We argue that mereological essentialism for events is independent of mereological essentialism for objects, and that the philosophical fallout of embracing mereological essentialism for events is minimal. We first outline what we should consider to be the parts of events, and then highlight why one would naturally be inclined to think that the object-question and the event-question are linked. Then, we argue that they are not. We also diagnose why this is the case and emphasize the upshot. In particular, we (...) argue that the way we evaluate modal claims which concern events differs from the way we evaluate modal claims which concern objects. Ultimately, then, to our title question we say: the answer does not matter as much as you might think. (shrink)