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Treatment of human differences in Scripture, particularly regarding the Cushites, raises the question of whether this group was “racially othered” by the Hebrews, or whether differences in phenological presentation and cultural customs were vested with less significance than they have been in a contemporary milieu.

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Whom a prime minister or president will not shake hands with is still more noticed than with whom they will. Public identity can afford to be ambiguous about friends, but not about enemies.Rodney Barker examines the available accounts of how enmity functions in the cultivation of identity, how essential or avoidable it is, and what the consequences are for the contemporary world.

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In this paper incomplete data sets, or data sets with missing attribute values, have three interpretations, lost values, attribute-concept values and ‘do not care’ conditions. Additionally, the process of data mining is based on two types of probabilistic approximations, global and saturated. We present results of experiments on mining incomplete data sets using six approaches, combining three interpretations of missing attribute values with two types of probabilistic approximations. We compare our six approaches, using the error rate computed as a result (...) of ten-fold cross validation as a criterion of quality. We show that for some data sets the error rate is significantly smaller (5% level of significance) for lost values, for some data sets the smaller error rate is associated with attribute-concept values, and sometimes with ‘do not care’ conditions. Again, for some approaches the error rate is significantly smaller for saturated probabilistic approximations than for global probabilistic approximations, while for some approaches it is the other way around. Thus, for an incomplete data set, the best approach to data mining should be chosen by trying all six approaches. (shrink)

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We study completely decomposable torsion-free abelian groups of the form $\mathcal{G}_S := \oplus_{n \in S} \mathbb{Q}_{p_n}$ for sets $S \subseteq \omega$. We show that $\mathcal{G}_S$has a decidable copy if and only if S is $\Sigma^0_2$and has a computable copy if and only if S is $\Sigma^0_3$.

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Authors frequently refer to gene-based selection in biological evolution, the reaction of the immune system to antigens, and operant learning as exemplifying selection processes in the same sense of this term. However, as obvious as this claim may seem on the surface, setting out an account of “selection” that is general enough to incorporate all three of these processes without becoming so general as to be vacuous is far from easy. In this target article, we set out such a general (...) account of selection to see how well it accommodates these very different sorts of selection. The three fundamental elements of this account are replication, variation, and environmental interaction. For selection to occur, these three processes must be related in a very specific way. In particular, replication must alternate with environmental interaction so that any changes that occur in replication are passed on differentially because of environmental interaction. One of the main differences among the three sorts of selection that we investigate concerns the role of organisms. In traditional biological evolution, organisms play a central role with respect to environmental interaction. Although environmental interaction can occur at other levels of the organizational hierarchy, organisms are the primary focus of environmental interaction. In the functioning of the immune system, organisms function as containers. The interactions that result in selection of antibodies during a lifetime are between entities (antibodies and antigens) contained within the organism. Resulting changes in the immune system of one organism are not passed on to later organisms. Nor are changes in operant behavior resulting from behavioral selection passed on to later organisms. But operant behavior is not contained in the organism because most of the interactions that lead to differential replication include parts of the world outside the organism. Changes in the organism's nervous system are the effects of those interactions. The role of genes also varies in these three systems. Biological evolution is gene-based (i.e., genes are the primary replicators). Genes play very different roles in operant behavior and the immune system. However, in all three systems, iteration is central. All three selection processes are also incredibly wasteful and inefficient. They can generate complexity and novelty primarily because they are so wasteful and inefficient. Key Words: evolution; immunology; interaction; operant behavior; operant learning; replication; selection; variation. (shrink)

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The four authors present their speculations about the future developments of mathematical logic in the twenty-first century. The areas of recursion theory, proof theory and logic for computer science, model theory, and set theory are discussed independently.

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The Dushnik–Miller Theorem states that every infinite countable linear ordering has a nontrivial self-embedding. We examine computability-theoretical aspects of this classical theorem.

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The article analyses Dante’s explanatory paraphrase and exegesis of the Lord’s Prayer, which opens the eleventh canto of Purgatory. The author reminds us that the prayer is the only one fully recited in the entire Comedy and this devotional practice is in line with the Franciscan prescription to recite it in the sixth hour of the Divine Office when Christ died on the cross. The prayer is reported by the poet on the first terrace of Purgatory, where the proud and (...) vainglorious must learn the virtue of humility, and therefore it symbolizes the perfect reciprocity between man and Godhead. Dante collates and amplifies the two complementary Latin versions of the Lord’s Prayer from Matthew 6: 9–13 and Luke 11: 2–4. The two synoptic texts are supplemented by the Gospel of John, from which Dante takes the concept of celestial bread – the flesh and the blood of Christ – which nourishes, liberates and sanctifies Christians. Apart from the Bible, Dante also draws upon the Augustinian and Tomistic traditions. However, the main hypotext behind the prayer, which is neither cited nor acknowledged in any explicit form in the Comedy, is the Franciscan Laudes creaturarum, also known as the Canticle of the Brother Sun. Written in vernacular by St. Francis himself, who is also the author of the Expositio in Pater noster, the Canticle was still recited and sung together with the Lord’s Prayer in the Franciscan communities in Dante’s time. Moreover, following the parallel readings popular nowadays in Dante studies, the author argues that Purgatorio 11 may be elucidated in the context of Paradiso 11, which is the Franciscan canto par excellence, and taken together they both offset cantos 10, 11, 12 of Inferno, which are based on the sin of pride. The denunciation of pride in and around canto 11 of Inferno alludes to humility – the remedy of such pride in Purgatory 11, which in turn prepares the reader for the encounter with St. Francis – the paragon of humility – in Paradiso 11. The author concludes that the Dantean paraphrase of the Lord’s Prayer is no less than an elaborate exegesis and homage to Christ and His teachings, something which is encompassed in a nutshell in the Sermon on the Mount. (shrink)

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We refine the constructions of Ferrante-Rackoff and Solovay on iterated definitions in first-order logic and their expressibility with polynomial size formulas. These constructions introduce additional quantifiers; however, we show that these extra quantifiers range over only finite sets and can be eliminated. We prove optimal upper and lower bounds on the quantifier complexity of polynomial size formulas obtained from the iterated definitions. In the quantifier-free case and in the case of purely existential or universal quantifiers, we show that Ω quantifiers (...) are necessary and sufficient. The last lower bounds are obtained with the aid of the Yao-Håstad switching lemma. (shrink)

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A pervasive interpretation among Husserl scholars is that his transcendental idealism inevitably leads to some form of solipsism. The aim of this dissertation is to defend Husserl against this charge. First, I argue that Husserl’s transcendental idealism is not a metaphysical theory. Transcendental phenomenology brackets all metaphysical presuppositions and argues from experience to the conditions of the possibility of experience. Husserl’s transcendental idealism should therefore be interpreted as a transcendental theory of knowledge. Second, it follows from the above characterization of (...) Husserl’s transcendental idealism that the responses Husserl gives to the problem of solipsism are in no way meant to prove the existence in-itself of an external world or the existence in-themselves of other transcendental egos. The purpose of Husserl’s engagement with the problem of solipsism is to explain how it is that transcendental phenomenology can account for the constitution of both the Objectivity of the world of experience and other psycho-physical subjects. The result is a set of transcendental arguments that explain the necessary conditions of the cognition of a shared external world and of other persons. I conclude with Husserl that the solipsism is a transcendental illusion, and that Husserl’s transcendental idealism does not lead to a problematic solipsism. Through a careful study of Husserl’s Nachlass, with particular attention paid to Ideas I, Formal and Transcendental Logic, and Cartesian Meditations, I lay the framework for a transcendental-epistemological interpretation of Husserl’s idealism. Applying this interpretive strategy to Husserl’s discussions of the problem of solipsism and intersubjective monadology, I argue that, for Husserl, empathy is the condition of the experience of other subjects, but that it does not allow us to experience the mental-lives of other transcendental egos. (shrink)

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For a long time, several natural phenomena have been considered unproblematically selection processes in the same sense of “selection.” In our target article we dealt with three of these phenomena: gene-based selection in biological evolution, the reaction of the immune system to antigens, and operant learning. We characterize selection in terms of three processes (variation, replication, and environmental interaction) resulting in the evolution of lineages via differential replication. Our commentators were largely supportive with respect to variation and environmental interaction but (...) critical with respect to replication, in particular its appeal to information. With some reservations, our commentators think that our general analysis of selection may fit gene-based selection in biological evolution and the reaction of the immune system but not operant learning. If nothing else, this article shows that the notion of selection is not as straightforward as it may seem. (shrink)

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Buss, S.R., The undecidability of k-provability, Annals of Pure and Applied Logic 53 75-102. The k-provability problem is, given a first-order formula ø and an integer k, to determine if ø has a proof consisting of k or fewer lines . This paper shows that the k-provability problem for the sequent calculus is undecidable. Indeed, for every r.e. set X there is a formula ø and an integer k such that for all n,ø has a proof of k sequents (...) if and only if n ε X. (shrink)

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Life history theory suggests that in risky and uncertain environments the optimal reproductive strategy is to reproduce early in order to maximize the probability of leaving any descendants at all. The fact that early menarche facilitates early reproduction provides an adaptationist rationale for our first two hypotheses: that women who experience more risky and uncertain environments early in life would have (1) earlier menarche and (2) earlier first births than women who experience less stress at an early age. Attachment theory (...) and research provide the rationale for our second two hypotheses: that the subjective early experience of risky and uncertain environments (insecurity) is (3) part of an evolved mechanism for entraining alternative reproductive strategies contingent on environmental risk and uncertainty and (4) reflected in expected lifespan. Evidence from our pilot study of 100 women attending antenatal clinics at a large metropolitan hospital is consistent with all four hypotheses: Women reporting more troubled family relations early in life had earlier menarche, earlier first birth, were more likely to identify with insecure adult attachment styles, and expected shorter lifespans. Multivariate analyses show that early stress directly affected age at menarche and first birth, affected adult attachment in interaction with expected lifespan, but had no effect on expected lifespan, where its original effect was taken over by interactions between age at menarche and adult attachment as well as age at first birth and adult attachment. We discuss our results in terms of the need to combine evolutionary and developmental perspectives and the relation between early stress in general and father absence in particular. (shrink)

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Although I do not find any of Sterba's responses to my recent criticisms of his work How to Make People Just convincing, I shall not attempt to answer them point by point since this would be a boring, scholastic exercise at best.1 Rather, I shall expand upon what I believe continue to be the three major problems with Sterba's theory and explain why his recent responses to my criticisms along these lines are not adequate.

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Healthcare ethics consultants in the Veterans Health Administration (VHA) document consults in an enterprise-wide web-based database entitled IEWeb, serving as a system of record for healthcare ethics documentation at 1300 VA facilities. The need arose to evolve the database from an ethics process training resource into a more streamlined documentation repository that captures essential consult elements. A VHA National Center for Ethics in Health Care (NCEHC) Improvement Team convened for three tasks: (1) Specify and prioritize IEWeb changes (occurred via six (...) focus groups composed of “new user” and “super user” cohorts with analysis of existing documentation patterns); (2) Pilot the changes regionally (via regional communication, training, and reviews of pre-post use patterns); and (3) Measure the impact of national change implementation on user perspectives (via pre-and post-change implementation polls). Focus groups identified six implementable priority areas for ethics consult documentation improvement, including the development of a usable consult summary note for ready conversion from IEWeb fields into the electronic health record. Post-IEWeb updates showed an increased number of consults documented, a reduction in “time to consult documentation closure” by a mean of 4.5 days, and a clinically-meaningful improvement in the quality of documentation (78% of ethics questions scored “above-bar” on the validation tool pre- vs. 89% scored “above-bar” post-IEWeb changes, n = 140). According to national survey findings, the number of consultants documenting “all” consults in IEWeb increased, satisfaction increased, and perception of documentation difficulty decreased. IEWeb simplification enabled ethics consultants to re-focus their documentation completion efforts by decreasing perception of documentation burden while improving documentation frequency and quality in a clinically-meaningful way. (shrink)

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This volume aims to contextualize the development and reception of Husserl’s transcendental-phenomenological idealism by placing him in dialogue with his most important interlocutors – his mentors, peers, and students. Husserl’s “turn” to idealism and the ensuing reaction to Ideas I resulted in a schism between the early members of the phenomenological movement. The division between the realist and the transcendental phenomenologists is often portrayed as a sharp one, with the realists naively and dogmatically rejecting all of Husserl’s written work after (...) the Logical Investigations. However, this understanding of the trajectory of the phenomenological movement ignores the extensive and intricate contours of the idealism-realism debate. In addition to helping us better interpret Husserl’s attempts to defend his idealism, reconsidering the idealism-realism debate elucidates the relationship and differences between Husserl's phenomenology and the broader landscape of early 20th century German philosophy, particularly the Munich phenomenologists and the Neo-Kantians. The contributions to this volume reconsider many of the early interpretations and critiques of Husserl, inviting readers to assess the merits of the arguments put forward by his critics while also shedding new light on their so-called “misunderstandings” of his idealism. This text should be of interest to researchers working in the history of phenomenology and Husserlian studies. (shrink)

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Analysis of the mechanisms underlying sex determination and sex differentiation in Drosophila has provided evidence for a complex but comprehensible regulatory hierarchy governing these developmental decisions. It is suggested here that the pattern of sexual differentiation and dosage compensation characteristic of the male is a default regulatory state. Recent results have provided, in addition, some surprising and intriguing conclusions: (1) that several of the critical controlling genes produce more transcripts than was predicted from the genetic analyses; (2) that setting of (...) the alternative sex‐specific states of the doublesex (dsx) locus involves differential transcript processing; and (3) that some aspects of sexual differentation require the prolonged action of certain elements of the regulatory hierarchy. These findings are discussed in connection with the current model of sex determination in Drosophila. (shrink)

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In order to be a self-governing agent, a person must govern the process by means of which she acquires the intention to act as she does. But what does governing this process require? The standard compatibilist answers to this question all assume that autonomous actions differ from nonautonomous actions insofar as they are a more perfect expression of the agent’s agency. I challenge this conception of autonomous agents as super agents. The distinguishing feature of autonomous agents is, I argue, the (...) nonagential role they play in the formation of their intentions. I offer an account of the relevant role. (shrink)

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When Herbert Marcuse's essay entitled “Repressive tolerance” was published in the mid-1960s it was trenchantly criticised because it was anti-democratic and defied the academic canon of value neutrality. Yet his argument is attracting renewed interest in the 21st century, particularly when, post 9/11, the thresholds or limits of tolerance are being contested. This article argues that Marcuse's original essay was concerned to problematise the dominant social understandings of tolerance at the time, which were more about insisting that individual citizens tolerate (...) government policy than governments encourage debate and dissent. The article shows how Marcuse attempted to demonstrate the social production of knowledge about tolerance, and how he diagnosed the social function performed by “impartiality” and “relativism”, and by “neutrality” and “objectivity”, which contributed to tolerance being repressive. In the sense that he was concerned about what counted socially as tolerance, and how it was socially defended and justified, his article can helpfully be conceived as an exercise in social epistemology. (shrink)

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Most animals have significant behavioral expertise built in without having to explicitly learn it all from scratch. This expertise is a product of evolution of the organism; it can be viewed as a very long term form of learning which provides a structured system within which individuals might learn more specialized skills or abilities. This paper suggests one possible mechanism for analagous robot evolution by describing a carefully designed series of networks, each one being a strict augmentation of the previous (...) one, which control a six legged walking machine capable of walking over rough terrain and following a person passively sensed in the infrared spectrum. As the completely decentralized networks are augmented. the robot’s performance and behavior repetoire demonstrably improve. The rationale for such demonstrations is that they may provide a hint as to the requirements for automatically building massive networks to carry out complex sensory-motor tasks. The experiments with an actual robot ensure that an essence of reality is maintained and that no critical disabling problems have been ignored. (shrink)

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This is an exciting time for brain science. Recent progress has been such that it now seems realistic to look toward an explanation of mind in terms of the brain's anatomy and physiology. Models based on artificially symmetrical arrays of idealized neurons are now being superseded by ones which properly take into account the brain's actual circuitry. This book presents a comprehensive overview of the current state of brain modeling, containing contributions from many leading researchers in this field. It will (...) be of interest not only to researchers in the fields of brain science and neurobiology, but also to psychologists and those involved in the study of artificial intelligence. (shrink)

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