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)

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)

We study connections between classical asymptotic density, computability and computable enumerability. In an earlier paper, the second two authors proved that there is a computably enumerable set A of density 1 with no computable subset of density 1. In the current paper, we extend this result in three different ways: The degrees of such sets A are precisely the nonlow c.e. degrees. There is a c.e. set A of density 1 with no computable subset of nonzero density. There is a (...) c.e. set A of density 1 such that every subset of A of density 1 is of high degree. We also study the extent to which c.e. sets A can be approximated by their computable subsets B in the sense that A\B has small density. There is a very close connection between the computational complexity of a set and the arithmetical complexity of its density and we characterize the lower densities, upper densities and densities of both computable and computably enumerable sets. We also study the notion of "computable at density r" where r is a real in the unit interval. Finally, we study connections between density and classical smallness notions such as immunity, hyperimmunity, and cohesiveness. (shrink)

. The accounting profession’s image and reputation is built upon the members of the profession acting with the “highest sense of integrity” in “the public interest” (AICPA, 2003, www.aicpa.org/about). The Enron debacle initiated the latest crisis facing the profession regarding its image and reputation. The American Institute of Certified Public Accountants (AICPA) is the largest professional body representing the accounting profession and the one to which regulators have looked in establishing and upholding professional standards relating to the public practice of (...) accounting and auditing. One of the AICPA’s responsibilities is to “promote public awareness and confidence in the integrity, objectivity, competence and professionalism of CPAs ....” (AICPA, 2003, www.aicpa.org/about). We analyze the public statements issued by the AICPA (i.e., press releases, speeches of officers, testimony, published articles) during this ethical and identity crisis beginning with the AICPA’s first public statement on the Enron debâcle (AIPCA 2001) and concluding with the AICPA recognizing the need for a “new accounting culture” (Melancon 2002). In order to better understand the public discourse, we use image restoration theory (Benoit, 1995), because it provides a typology of strategies for dealing with the public face of crises. We identify the three most common strategies the AICPA employs during this period. Proposals for taking corrective action represent the most commonly employed strategy, but the analysis also indicates an attempt to evade responsibility by claiming defeasibility and to reduce the offensiveness of the situation by employing a bolstering strategy. A second analysis using DICTION, a software package useful in revealing latent dimensions in a text, indicates that early statements tend to use language related to accomplishing specific action while the later statements tend more toward general language that relates to peoples’ everyday lives. The findings raise questions as to substantive nature of the changes proposed by the AICPA, and thus, the extent to which the public interest is being served by them. (shrink)

Schnorr randomness is a notion of algorithmic randomness for real numbers closely related to Martin-Löf randomness. After its initial development in the 1970s the notion received considerably less attention than Martin-Löf randomness, but recently interest has increased in a range of randomness concepts. In this article, we explore the properties of Schnorr random reals, and in particular the c.e. Schnorr random reals. We show that there are c.e. reals that are Schnorr random but not Martin-Löf random, and provide a new (...) characterization of Schnorr random real numbers in terms of prefix-free machines. We prove that unlike Martin-Löf random c.e. reals, not all Schnorr random c.e. reals are Turing complete, though all are in high Turing degrees. We use the machine characterization to define a notion of "Schnorr reducibility" which allows us to calibrate the Schnorr complexity of reals. We define the class of "Schnorr trivial" reals, which are ones whose initial segment complexity is identical with the computable reals, and demonstrate that this class has non-computable members. (shrink)

This paper gives a brief history of the idea of an age of majority and argues that no age of majority should exceed the fighting age, i.e., the age at which a person becomes eligible to serve in a military unit. Several objections to the proposed constraint on ages of majority are raised and answered.

This paper gives a brief history of the idea of an age of majority and argues that no age of majority should exceed the fighting age, i.e., the age at which a person becomes eligible to serve in a military unit. Several objections to the proposed constraint on ages of majority are raised and answered.

In his highly insightful and wide-ranging rebuttal article “Doing Phenomenology on the Things,” van Manen makes the important claim that “the mission of modern phenomenology transcends foundational and exegetical philosophical theorizing”. I take this claim seriously and put forward this article as an exercise in practical lifeworld phenomenological reflection. By lifeworld I refer to the environing world in which we are enmeshed and in which we live and breathe and have our being; it penetrates our awareness of things while at (...) the same time offering the possibility of reprieve from complete enmeshment in the form of existential reflection on the things, events, doings, goings-on, etc., that collectively constitute the phenomenological concept of world. By phenomenological reflection I refer to written analyses that approach mundane lifeworld phenomena in a manner or style that seeks to show or reveal aspects of the lifeworld that in the ordinary course of everyday life remain hidden from view…aspects of the lifeworld that while they may be glimpsed fleetingly from time to time, remain largely hidden, i.e. in a state of unrealized concealment. The article thus takes seriously the Husserlian call for a return “to the things themselves.” And while the ostensible topic is an old used car, the defacto topic is “us,” or perhaps better stated, the actual topic arises at the meeting place where the “us” and “an older car” arrive and conjoin. It is at the place of this meeting between self and world that the phenomenological analysis can begin. The article emphasizes the practical import of this meeting, this engagement—it is not regarded as a matter of purely abstract philosophical theorizing nor as a purely descriptive matter, although it is also that in part too. (shrink)

Cenzer, D., R. Downey, C. Jockusch and R.A. Shore, Countable thin Π01 classes, Annals of Pure and Applied Logic 59 79–139. A Π01 class P {0, 1}ω is thin if every Π01 subclass of P is the intersection of P with some clopen set. Countable thin Π01 classes are constructed having arbitrary recursive Cantor- Bendixson rank. A thin Π01 class P is constructed with a unique nonisolated point A and furthermore A is of degree 0’. It is shown that no (...) set of degree ≥0” can be a member of any thin Π01 class. An r.e. degree d is constructed such that no set of degree d can be a member of any thin Π01 class. It is also shown that between any two distinct comparable r.e. degrees, there is a degree that contains a set which is of rank one in some thin Π01 class. It is shown that no maximal set can have rank one in any Π01 class, while there exist maximal sets of rank 2. The connection between Π01 classes, propositional theories and recursive Boolean algebras is explored, producing several corollaries to the results on Π01 classes. For example, call a recursive Boolean algebra thin if it has no proper nonprincipal recursive ideals. Then no thin recursive Boolean algebra can have a maximal ideal of degree ≥0”. (shrink)

Volume XVI Phenomenology of Emotions, Systematical and Historical Perspectives Aim and Scope: The New Yearbook for Phenomenology and Phenomenological Philosophy provides an annual international forum for phenomenological research in the spirit of Husserl's groundbreaking work and the extension of this work by such figures as Scheler, Heidegger, Sartre, Levinas, Merleau-Ponty and Gadamer. Contributors: Esteban Marín Ávila, Thiemo Breyer, Jakub Čapek, Mariano Crespo, Roberta De Monticelli, John J. Drummond, Søren Engelsen, Maria Gyemant, Mirja Hartimo, Elisa Magrì, Ronny Miron, Anthony J. Steinbock, (...) Panos Theodorou, Íngrid Vendrell Ferran, Antonio Zirión Quijano, and Nate Zuckerman. Submissions: Manuscripts, prepared for blind review, should be submitted to the Editors electronically via e-mail attachments. (shrink)

Given certain well-known empirical facts–including the Bush II administration’s motivations and its actions initiating the war – the U.S. invasion of Iraq in 2003 (and its continuing war of occupation) is not just (i.e., is not morally justified), on any standard interpretation of Just War Theory criteria for jus ad bellum. Since there was no imminent threat of attack by Iraq against the U.S., the U.S. invasion of Iraq was a Preventative or Merely Precautionary War (which is notrecognized by either (...) Just War Theory or international law as a legitimate basis for initiating a war) rather than a Preemptive War (which may sometimes be justified, if there is a real threat of imminent attack) or a Reactive War (responding to an unjustified attack from an aggressor, which is always justified). Moreover, the neo-conservative program for perpetual U.S. world domination by the weakening of other nations and the invasions of weaker nations for purposes of U.S. economic and geopolitical advantage (behind the facade of “spreading democracy and freedom”) is not morally justified. However, the moral status of the U.S. invasion of Afghanistan is much less clear. Many argue that is was morally justified according to both Just War Theory and international law, given certain well-established empirical facts; particularly, al-Qaeda’s involvement with the events of 9-11 and the Taliban government’s protection of al-Qaeda and its terrorist infrastructure within Afghanistan. On this analysis, the U.S. invasion of Afghanistan was justified as both a Reactive War (responding to an unjustified attack against primarily civilian targets) and a Preemptive War (to try to make sure that al-Qaeda did not have the opportunity to use its infrastructure in Afghanistan to arrange other attacks on civilian targets in the U.S. or other nations). But the cogency of this analysis depends on whether there were any realistic alternatives fordisrupting al-Qaeda and bringing its leaders to justice; and some argue that such alternatives did exist. Moreover, even if U.S. military intervention in Afghanistan was morally justified it is arguable that the amount and type of force used – e.g. intensive, wide-spread bombing campaigns that killed many civilians – were not justified. (shrink)

We describe an algorithm which allows a behavior-based robot to learn on the basis of positive and negative feedback when to activate its behaviors. In accordance with the philosophy of behavior-based robots, the algorithm is completely distributed: each of the behaviors independently tries to find out (i) whether it is relevant (ie. whether it is at all correlated to positive feedback) and (ii) what the conditions are under which it becomes reliable (i.e. the conditions under which i t maximizes the (...) probability of receiving positive feedback and minimizes the probability of receiving negative feedback). The algorithm has been tested successfully on an autonomous 6-legged robot which had to learn how to coordinate its legs so as to walk forward. (shrink)

Given two incomparable c.e. Turing degrees a and b, we show that there exists a c.e. degree c such that c = (a ⋃ c) ⋂ (b ⋃ c), a ⋃ c | b ⋃ c, and c < a ⋃ b.

Applications of learning to autonomous agents (simulated or real) have often been restricted to learning a mapping from perceived state of the world to the next action to take. Often this is couched in terms of learning from no previous knowledge. This general case for real autonomous robots is very difficult. In any case, when building a real robot there is usually a lot of a priori knowledge (e.g., from the engineering that went into its design) which doesn’t need to (...) be learned. We describe the behavior-based approach to autonomous robots, and then examine four classes of learning problems associated with such robots. (shrink)

In [Countable thin [Formula: see text] classes, Ann. Pure Appl. Logic 59 79–139], Cenzer, Downey, Jockusch and Shore proved the density of degrees containing members of countable thin [Formula: see text] classes. In the same paper, Cenzer et al. also proved the existence of degrees containing no members of thin [Formula: see text] classes. We will prove in this paper that the c.e. degrees containing no members of thin [Formula: see text] classes are dense in the c.e. degrees. We will (...) also prove that the c.e. degrees containing members of thin [Formula: see text] classes are dense in the c.e. degrees, improving the result of Cenzer et al. mentioned above. Thus, we obtain a new natural subclass of c.e. degrees which are both dense and co-dense in the c.e. degrees, while the other such class is the class of branching c.e. degrees 113–130] for nonbranching degrees and [T. A. Slaman, The density of infima in the recursively enumerable degrees, Ann. Pure Appl. Logic 52 155–179] for branching degrees). (shrink)

Answering a question of Per Lindström, we show that there is no “plus-capping” degree, i.e. that for any incomplete r.e. degreew, there is an incomplete r.e. degreea>w such that there is no r.e. degreev>w witha∩v=w.

The goal of this paper is to announce there is a single orbit of the c.e. sets with inclusion, ε, such that the question of membership in this orbit is ${\Sigma _1^1 }$ -complete. This result and proof have a number of nice corollaries: the Scott rank of ε is $\omega _1^{{\rm{CK}}}$ + 1; not all orbits are elementarily definable; there is no arithmetic description of all orbits of ε; for all finite α ≥ 9, there is a properly $\Delta (...) _\alpha ^0 $ orbit (from the proof). (shrink)

Resumen Los textos televisivos interpretan y analizan la realidad circundante e influyen en la visión que la audiencia tiene del mundo. Es más, los programas cómicos basados en la burla y el sarcasmo hacia grupos étnicos minoritarios refuerzan estereotipos negativos y promueven la discriminación cultural. En este artículo se estudia el humor étnico en La paisana Jacinta. Esta serie peruana ha sido acusada de racista por diversas personas y grupos, entre ellos, la excongresista indígena Hilaria Supa, LUNDU y CHIRAPAQ. Primero, (...) se analizan las estrategias pragmático-lingüísticas empleadas en la construcción del humor étnico en una selección de diálogos y monólogos de Jacinta, el personaje principal de la serie. Para ello, se utiliza la Teoría General del Humor Verbal. Asimismo, dado que todo texto es multimodal, se tiene también en cuenta cómo imágenes, gestos, y elementos musicales y prosódicos en la serie contribuyen en la producción de la comicidad. Finalmente, a partir de estos resultados, se examina el contenido cómico del programa desde una perspectiva crítica para determinar si este es discriminatorio. (shrink)

The starting point of this paper is a recent exchange in the Journal of Aesthetics and Art Criticism1 that pits moderate moralism against robust immoralism and has Humean antecedents. I will proceed by agreeing in part with both, but fully with neither, thereby annoying as many people as possible in one go. I believe, with Anne Eaton, the proponent of robust immoralism, that fictions which valorize what she calls "rough heroes" can arouse both aesthetically compelling and morally troubling reactions. On (...) the other hand, I argue that the troubling moral reaction targeted need not be a sufficient ground for attributing a moral flaw to the... (shrink)

In defending Levinas’s ethical theory against Ricoeur’s objections in Oneself as Another, I make a two-fold argument in regard to heroic action and the ordinary ethical relation. First, I suggest a definition of the hero as she who does what is right—that is, what is ethically necessary or obligatory—even when it requires extreme sacrifice. Second, I argue that the development of virtuous character, out of which such heroic action comes, is dependent upon the asymmetrical relation between an alterior Other (...) and a self who is willing to sacrifice to do what is right. Re-orienting oneself toward the ethical relation is, itself, a sacrifice, requiring that one adopt a non-reciprocal, asymmetrical devotion to the Other. Thus, ethics, including both heroic and ordinary ethical behavior, ought not be founded on notions of friendship, symmetry, or mutuality, but rather on absolute difference, asymmetry, and self-sacrifice. (shrink)

Homophobia has decreased in past decades, but gut-level disgust towards gay men lingers. It has been suggested that disgust can be reduced by inducing its proposed opposite emotion, elevation. Rese...

In defending Levinas’s ethical theory against Ricoeur’s objections in Oneself as Another, I make a two-fold argument in regard to heroic action and the ordinary ethical relation. First, I suggest a definition of the hero as she who does what is right—that is, what is ethically necessary or obligatory—even when it requires extreme sacrifice. Second, I argue that the development of virtuous character, out of which such heroic action comes, is dependent upon the asymmetrical relation between an alterior Other (...) and a self who is willing to sacrifice to do what is right. Re-orienting oneself toward the ethical relation is, itself, a sacrifice, requiring that one adopt a non-reciprocal, asymmetrical devotion to the Other. Thus, ethics, including both heroic and ordinary ethical behavior, ought not be founded on notions of friendship, symmetry, or mutuality, but rather on absolute difference, asymmetry, and self-sacrifice. (shrink)

Based on a series of lectures delivered in 1840, Thomas Carlyle’s_ On Heroes, Hero-Worship, and the Heroic in History_ considers the creation of heroes and the ways they exert heroic leadership. From the divine and prophetic to the poetic to the religious to the political, Carlyle investigates the mysterious qualities that elevate humans to cultural significance. By situating the text in the context of six essays by distinguished scholars that reevaluate both Carlyle’s work and his ideas, David Sorensen and (...) Brent Kinser argue that Carlyle's concept of heroism stresses the hero’s spiritual dimension. In Carlyle’s engagement with various heroic personalities, he dislodges religiosity from religion, myth from history, and truth from “quackery” as he describes the wondrous ways in which these “flowing light-fountains” unlock the heroic potential of ordinary human beings. (shrink)