Girolamo Saccheri (1667--1733) was an Italian Jesuit priest, scholastic philosopher, and mathematician. He earned a permanent place in the history of mathematics by discovering and rigorously deducing an elaborate chain of consequences of an axiom-set for what is now known as hyperbolic (or Lobachevskian) plane geometry. Reviewer's remarks: (1) On two pages of this book Saccheri refers to his previous and equally original book Logica demonstrativa (Turin, 1697) to which 14 of the 16 pages of the editor's "Introduction" are devoted. (...) At the time of the first edition, 1920, the editor was apparently not acquainted with the secondary literature on Logica demonstrativa which continued to grow in the period preceding the second edition \ref[see D. J. Struik, in Dictionary of scientific biography, Vol. 12, 55--57, Scribner's, New York, 1975]. Of special interest in this connection is a series of three articles by A. F. Emch [Scripta Math. 3 (1935), 51--60; Zbl 10, 386; ibid. 3 (1935), 143--152; Zbl 11, 193; ibid. 3 (1935), 221--333; Zbl 12, 98]. (2) It seems curious that modern writers believe that demonstration of the "nondeducibility" of the parallel postulate vindicates Euclid whereas at first Saccheri seems to have thought that demonstration of its "deducibility" is what would vindicate Euclid. Saccheri is perfectly clear in his commitment to the ancient (and now discredited) view that it is wrong to take as an "axiom" a proposition which is not a "primal verity", which is not "known through itself". So it would seem that Saccheri should think that he was convicting Euclid of error by deducing the parallel postulate. The resolution of this confusion is that Saccheri thought that he had proved, not merely that the parallel postulate was true, but that it was a "primal verity" and, thus, that Euclid was correct in taking it as an "axiom". As implausible as this claim about Saccheri may seem, the passage on p. 237, lines 3--15, seems to admit of no other interpretation. Indeed, Emch takes it this way. (3) As has been noted by many others, Saccheri was fascinated, if not obsessed, by what may be called "reflexive indirect deductions", indirect deductions which show that a conclusion follows from given premises by a chain of reasoning beginning with the given premises augmented by the denial of the desired conclusion and ending with the conclusion itself. It is obvious, of course, that this is simply a species of ordinary indirect deduction; a conclusion follows from given premises if a contradiction is deducible from those given premises augmented by the denial of the conclusion---and it is immaterial whether the contradiction involves one of the premises, the denial of the conclusion, or even, as often happens, intermediate propositions distinct from the given premises and the denial of the conclusion. Saccheri seemed to think that a proposition proved in this way was deduced from its own denial and, thus, that its denial was self-contradictory (p. 207). Inference from this mistake to the idea that propositions proved in this way are "primal verities" would involve yet another confusion. The reviewer gratefully acknowledges extensive communication with his former doctoral students J. Gasser and M. Scanlan. ADDED 14 March 14, 2015: (1) Wikipedia reports that many of Saccheri's ideas have a precedent in the 11th Century Persian polymath Omar Khayyám's Discussion of Difficulties in Euclid, a fact ignored in most Western sources until recently. It is unclear whether Saccheri had access to this work in translation, or developed his ideas independently. (2) This book is another exemplification of the huge difference between indirect deduction and indirect reduction. Indirect deduction requires making an assumption that is inconsistent with the premises previously adopted. This means that the reasoner must perform a certain mental act of assuming a certain proposition. It case the premises are all known truths, indirect deduction—which would then be indirect proof—requires the reasoner to assume a falsehood. This fact has been noted by several prominent mathematicians including Hardy, Hilbert, and Tarski. Indirect reduction requires no new assumption. Indirect reduction is simply a transformation of an argument in one form into another argument in a different form. In an indirect reduction one proposition in the old premise set is replaced by the contradictory opposite of the old conclusion and the new conclusion becomes the contradictory opposite of the replaced premise. Roughly and schematically, P,Q/R becomes P,~R/~Q or ~R, Q/~P. Saccheri’s work involved indirect deduction not indirect reduction. (3) The distinction between indirect deduction and indirect reduction has largely slipped through the cracks, the cracks between medieval-oriented logic and modern-oriented logic. The medievalists have a heavy investment in reduction and, though they have heard of deduction, they think that deduction is a form of reduction, or vice versa, or in some cases they think that the word ‘deduction’ is the modern way of referring to reduction. The modernists have no interest in reduction, i.e. in the process of transforming one argument into another having exactly the same number of premises. Modern logicians, like Aristotle, are concerned with deducing a single proposition from a set of propositions. Some focus on deducing a single proposition from the null set—something difficult to relate to reduction. (shrink)

Introduction Few areas of social inquiry are more exciting and important, and yet at the same time more marked by controversy and dispute, than the area ...

Although organizational commitment continues to interest researchers because of its positive effects on organizations, we know relatively little about the effects of the ethical context on organizational commitment. As such, we contribute to the organizational commitment field by assessing the effects of ethical climates (Victor and Cullen, 1987, 1988) on organizational commitment. We hypothesized that an ethical climate of benevolence has a positive relationship with organizational commitment while egoistic climate is negatively related to commitment. Results supported our propositions for both (...) a benevolent climate and an egoistic climate. We also hypothesized that a principled climate is positively related to organizational commitment for professional workers but has no relationships for nonprofessional workers. Results supported this hypothesis. (shrink)

This book examines the different conceptions of the individual that have emerged in recent new approaches in economics, including behavioral economics, experimental economics, social preferences approaches, game theory, neuroeconomics, evolutionary and complexity economics, and the capability approach. These conceptions are classified according to whether they seek to revise the traditional atomist individual conception, put new emphasis on interaction and relations between individuals, account for individuals as evolving and self-organizing, and explain individuals in terms of capabilities. The method of analysis uses (...) two identity criteria for distinguishing and re-identifying individuals to determine whether these different individual conceptions successfully identify individuals. Successful individual conceptions account for sub-personal and supra-personal bounds on single individual explanations. The former concerns the fragmentation of individuals into multiple selves; the latter concerns the dissolution of individuals into the social. The book develops an understanding of bounded individuality, seen as central to the defense of human rights. (shrink)

According to QBism, quantum states, unitary evolutions, and measurement operators are all understood as personal judgments of the agent using the formalism. Meanwhile, quantum measurement outcomes are understood as the personal experiences of the same agent. Wigner’s conundrum of the friend, in which two agents ostensibly have different accounts of whether or not there is a measurement outcome, thus poses no paradox for QBism. Indeed the resolution of Wigner’s original thought experiment was central to the development of QBist thinking. The (...) focus of this paper concerns two very instructive modifications to Wigner’s puzzle: One, a recent no-go theorem by Frauchiger and Renner, and the other a thought experiment by Baumann and Brukner. We show that the paradoxical features emphasized in these works disappear once both friend and Wigner are understood as agents on an equal footing with regard to their individual uses of quantum theory. Wigner’s action on his friend then becomes, from the friend’s perspective, an action the friend takes on Wigner. Our analysis rests on a kind of quantum Copernican principle: When two agents take actions on each other, each agent has a dual role as a physical system for the other agent. No user of quantum theory is more privileged than any other. In contrast to the sentiment of Wigner’s original paper, neither agent should be considered as in “suspended animation.” In this light, QBism brings an entirely new perspective to understanding Wigner’s friend thought experiments. (shrink)

The author of this book, Professor of Philosophy at the University of Zurich, presents here a collection of studies of some political thinkers of the eighteenth and nineteenth centuries. Their ideas serve him as illustrations for an attempt to define the paradox of modern politics—how the individual can control the State and at the same time be controlled by it. The paradox has been made more acute by the march of historicist ideas since Rousseau and Hegel and it is a (...) sign of the contemporary times that many thinkers, not necessarily Catholic, should be turning back for a solution to the Graeco-Roman and Christian natural law tradition. Indeed the tide has turned to such an extent that it is even possible to hail some very old ideas as if they were le dernier cri. It is ironical that Professor Barth should talk about the ‘unquestionably revolutionary implications’ of a statement like this by Heinrich Mitteis in 1948: ‘Natural right breaks positive right’. In point of fact this would have seemed a truism to Aquinas. (shrink)

IN A RECENT AND PHILOSOPHICALLY RICH STUDY, David Wood has undertaken the deconstruction of time through an engagement with the thought of Nietzsche, Husserl, Heidegger, and, of course, Derrida. The present essay is not intended to offer a sustained criticism of Wood's arguments or to canvass what he says about the quartet of philosophers noted above; rather, with his book as background, the essay's purpose is to say something about only one of the four philosophers--Edmund Husserl--and particularly about the place (...) of presence and absence in Husserl's phenomenology of time and the consciousness of time. The results may supply ammunition both to those inclined to criticize Husserl from a deconstructive point of view and to those bold enough to defend him. In any event, what Husserl has to say about these matters is worth considering for its own sake. His discussion of the different ways in which presence and absence enter into our temporal experience is subtle and nuanced. He draws delicate distinctions and points to continuities and discontinuities that deserve the philosopher's careful and sympathetic attention. I will focus on a few of these, hoping that they will suggest something of the rich resources for reflection on this topic that are present in Husserl's texts. (shrink)

In this essay I examine the notion of forgiveness as found in Søren Kierkegaard’s Works of Love. After detailing the work of forgiveness in hiding the multitude of sins, I examine forgiveness as an example of Kierkegaard’s concept of redoubling. Then I relate Kierkegaard’s concept of forgiveness to his concept of hope. Throughout I emphasize the relation between forgiveness and neighbor love, which Kierkegaard views as an essential component of forgiveness. This emphasis counters the prevailing notion in the literature on (...) forgiveness, which views forgiveness as solely concerned with the relinquishing of negative emotions. For Kierkegaard, while this relinquishing is no doubt part of forgiveness, true forgiveness must include love for one’s neighbor. (shrink)

Cosmological ideas influenced every aspect of traditional Chinese culture, from science and medicine to art, philosophy, and religion. Although other premodern societies developed similar conceptions, in no other major civilization were such ideas so pervasive or powerful. In The Development and Decline of Chinese Cosmology, John Henderson traces the evolution of Chinese thought on cosmic order from the classical era to the nineteenth century. Unlike many standard studies of premodern cosmologies, this book analyzes the origins, development, and rejection of (...) these models, not just their structure. Moreover, while historians often limit their studies of cosmic order to specialized fields like the history of science, Henderson examines how the cosmological ideas formulated in late classical times permeated various facets of Chinese life, from high philosophy to popular culture. (shrink)

The introductory essay to this collection correctly observes that there are many “challenges for rapprochement” between anthropology and (the rest of) cognitive science. Still, the possibilities of fruitful interchanges provide some hope for the parties getting back together, at least on an intermittent basis. This response offers some views concerning the “incompatibility” of psychology and anthropology, reviews why cognitive anthropology drifted away from cognitive science, and notes two areas of contemporary interest within cognitive anthropology that may lead to a re-engagement.

Currently in the United Kingdom, anyone donating gametes has the status of an open-identity donor. This means that, at the age of 18, persons conceived with gametes donated since April 1, 2005 have a right to access certain pieces of identifying information about their donor. However, in early 2015, the UK Parliament approved new regulations that make mitochondrial donors anonymous. Both mitochondrial donation and gamete donation are similar in the basic sense that they involve the contribution of gamete materials to (...) create future persons. Given this similarity, this paper presumes that both types of donor should be treated the same and made open-identity under the law, unless there is a convincing argument for treating them differently. I argue that none of the existing arguments that have been made so far in favor of mitochondrial donor anonymity are convincing and mitochondrial donors should therefore be treated as open-identity donors under UK law. (shrink)

A collection of essays by prominent physicists, biologists, geneticists, zoologists, philosophers and other thinkers about the relationship between science and philosophy, particularly the teleological versus the mechanistic explanation of the universe.

I argue in this essay that Edmund Husserl distinguishes three levels within time-consciousness: an absolute time-constituting flow of consciousness, the immanent acts of consciousness the flow constitutes, and the transcendent objects the acts intend. The immediate occasion for this claim is Neal DeRoo’s discussion of Dan Zahavi’s reservations about the notion of an absolute flow and DeRoo’s own efforts to mediate between Zahavi’s view and the position Robert Sokolowski and I have advanced. I argue that the flow and the tripartite (...) distinction it introduces into consciousness is firmly grounded in Husserl’s texts and is philosophically defensible. The absolute flow is distinct but inseparable from what it constitutes. It is intentional in a nonobjectivating way, and accounts for the awareness I have of my individual acts of consciousness and of the unity and continuity of my conscious life. In its absence, consciousness would become an incoherent stream of episodic acts. There is nothing mysterious about the flow. What would be mysterious is consciousness without the flow. (shrink)

ABSTRACT The financial crisis was in large part caused, prolonged, and worsened by a series of government actions and interventions. The housing boom and bust that precipitated the crisis were enabled by extraordinarily loose monetary policy. After the housing boom came to an end, the Federal Reserve misdiagnosed financial markets' uncertainty about the location and value of risky subprime mortgage‐backed securities as being, instead, a liquidity problem, and it took inappropriate compensatory actions that had side effects that included raising the (...) price of oil. Finally, in mid‐September 2008, the government's ad‐hoc bailouts, and the unpredictable terms of the proposed tarp legislation, appear to have caused a sharp spike in uncertainty in the financial markets. (shrink)

In this major contribution to the study of the Chinese classics and comparative religion, John Henderson uses the history of exegesis to illuminate mental patterns that have universal and perennial significance for intellectual history. Henderson relates the Confucian commentarial tradition to other primary exegetical traditions, particularly the Homeric tradition, Vedanta, rabbinic Judaism, ancient and medieval Christian biblical exegesis, and Qur'anic exegesis. In making such comparisons, he discusses some basic assumptions common to all these traditions--such as that the classics or (...) scriptures are comprehensive or that they contain all significant knowledge or truth and analyzes the strategies deployed to support these presuppositions. As shown here, primary differences among commentarial or exegetical traditions arose from variations in their emphasis on one or another of these assumptions and strategies. Henderson demonstrates that exegetical modes of thought were far from arcane: they dominated the post-classical/premodern intellectual world. Some have persisted or re-emerged in modern times, particularly in ideologies such as Marxism. Written in an engaging and accessible style, Scripture, Canon, and Commentary is not only a challenging interpretation of comparative scriptural traditions but also an excellent introduction to the study of the Confucian classics. Originally published in 1991. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These paperback editions preserve the original texts of these important books while presenting them in durable paperback editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905. (shrink)

A question that recent research on the global pandemic raises is: how do the assumptions underlying epidemiological models and economic models differ? Epidemiological models we now know have become quite sophisticated (see Avery et al., 2020). Debate among economic methodologists regarding the nature of modeling has generated a considerable literature as well (Reiss, 2012; Hands, 2013). Yet these two literatures are largely non-communicating. Perhaps this is because economics has produced relatively little research on pandemics (though see Boianovsky and Erreygers, 2021). (...) Yet it might still be asked, what might economic models be missing that epidemiological models capture? And might there be some sort of methodological bias in mainstream economics that plays a role in this? One way, then, one might begin to answer these questions is by identifying the main phenomenon in question, namely, in the case of the pandemic, a particular type of process, and ask what the nature of this type of process is. Then we may ask whether there is something about this type of phenomenon that places it out of bounds for current economic methodology. Thus, what sort of phenomenon is a pandemic? (shrink)

In this stimulating work, Dr. Wong propounds Christian Wholism as a path to peace and joy as well as healing for our 'brokeness' and 'lostness' in the postmodern world. Wong discusses what it means to be whole in our spiritual, intellectual, physical, ethical, psychological, and other domains of our multidimensional personhood. Some practical suggestions are offered. He voices a hope in God's promise of a resurrected body as the gift of ultimate wholeness.

In lieu of an abstract, here is a brief excerpt of the content:Buddhist-Christian Studies 22 (2002) 2-15 [Access article in PDF] Economic Aspects of Social and Environmental Violence John B. Cobb Jr. Claremont School of Theology I When we think of violence, what first comes to mind are violent acts by individuals or groups against other individuals. We think of rapes and murders, lynchings and muggings, beatings and armed robberies. We want the police to protect us from this violence. (...) Unfortunately, we know that police are tempted, in turn, to employ their power in violent ways, chiefly against those guilty of crimes, but sometimes against the innocent. The cycle of violence on the part of individuals and groups goes on.Bad as this violence is, it is worse when the state, instead of restricting it, supports and requires it. Political authorities have always exercised violence against their own people, especially those they suspected of being threats to their power. But in the twentieth century, state violence reached previously unheard of levels. For the sake of building a communist society, Stalin killed millions and imprisoned millions more. The Nazis undertook to purify Germany of Jews, gypsies, and other undesirables through extermination undertaken through bureaucratic processes.We Americans do not think of ourselves as having employed state power in any such way. We know that national power was used violently to drive Native Americans off their land down through the nineteenth century. We know that southern states used their power to enforce segregation and protect whites who engaged in violent acts against blacks in order to maintain total white domination over them. But we now think of the national government much more as the protector of human rights. This is not entirely false.We tend not to recognize, however, the amount of violence the national government is exercising in the wars against crime and drugs. In order to reduce individual violence as well as drug use, we have created a prison population of two million. One-fourth of all the prisoners in the world are in the United States, most of them jailed for nonviolent crimes. Although drug use is more or less equally spread among ethnic and economic groups, most of those imprisoned for this crime are poor and ethnic minorities. In the name of law and order, enormous violence is inflicted by the United States against the people of its ghettos. [End Page 3]In this same century war also took on new dimensions. It has been waged against entire populations instead of armies. The aim at total destruction came to its fullest expression when twice the United States dropped atomic bombs on Japan.World War II has made all of us sadly aware of the horrors of state violence. It has turned us against nationalism. We are appalled as we see nationalism raise its ugly head again in the former Soviet Union and especially in the former Yugoslavia. When ethnic groups undertake to destroy each other, our moral condemnation is unambiguous. Personal, group, and state violence remains a problem, but at least the wrong involved in this is widely understood.In all civilization there has been another kind of violence—economic. In much of history economic violence has been closely related to the forms noted above. The rich have been able to impose their will on the poor because they could employ persons to exercise violence for them and they could influence state action. We see this glaringly in the "goon squads" employed by the wealthy in some Latin American countries to intimidate and kill those who protest their actions. These goon squads often work closely with the military power of the state.We know that in this country as well, wealth reduces the chance of conviction for crimes. It also buys influence in government. On the whole the United States government throughout history has supported the interests of those with money. Today the power of wealth in the political process is clearly evident. We recognize that this situation is corrupt, but we do not ordinarily think of it as a form of violence. This is because the violent consequences are indirect, and we are... (shrink)

This is a study in the philosophy of social science. It takes the form of a comparative critique of three contemporary approaches: ordinary language philosophy, hermeneutics and critical theory, represented here respectively by Ludwig Wittgenstein, Paul Ricoeur and Jürgen Habermas. Part I is devoted to an exposition of these authors' views and of the traditions to which they belong. Its unifying thread is their common concern with language, a concern which nonetheless reveals important differences of approach. For whereas ordinary language (...) philosophers tend to treat linguistic activity as the ultimate object of inquiry, both Ricoeur and Habermas regard it as a medium which betrays more fundamental dimensions of human experience and the social world. Part II complements the exposition with a critical analysis of its central themes: the conceptualisation of action, the methodology of interpretation, and the theory of reference and truth. The author defends many aspects of the work of Ricoeur and Habermas, such as the emphasis on power and ideology, the strategy of depth interpretation, and the link between consensus and truth; but he argues that there are serious deficiencies and obscurities in their work. He proposes solutions to these difficulties and concludes with a sketch of a critical and rationally justified theory for the interpretation of action - a critical hermeneutics. (shrink)