The majority of studies on natural resources management in both developed and developing countries are silent on the issue of analysis of corruption – or they treat it tangentially, as an annoying anomaly, or simply deviance from the rules. As a result, the issue has hardly been subjected to in-depth characterisation or reforms. This study employed and integrated mainstream principal-agent theory and more recently developed collective action theory to enhance our understanding – in different but complementary ways − of the (...) socio-political underpinnings of corruption. A supposed ‘best case’ participatory forest management scheme in Tanzania reveals significant forest-related corrupt undertakings, which led to forest encroachment in the form of charcoal and timber exploitation. The findings point to contextual grounds for corruption, namely: undermined assumptions of the mainstream principal-agent institutions; the presence of alternative informal principal-agent institutions; the presence of immediate and substantial benefits that flow to such alternative institutions; and the huge market demands for their forest products and services. Through such a nuanced approach that blends the two above-mentioned theories in meaningful ways, more appropriate options for policy formulation and implementation are proposed. (shrink)

The logical foundations of game-theoretic solution concepts have so far been explored within the con¯nes of epistemic logic. In this paper we turn to a di®erent branch of modal logic, namely temporal logic, and propose to view the solution of a game as a complete prediction about future play. The branching time framework is extended by adding agents and by de¯ning the notion of prediction. A syntactic characterization of backward induction in terms of the property of internal consistency of prediction (...) is given. (shrink)

Counterexamples to two results by Stalnaker (Theory and Decision, 1994) are given and a corrected version of one of the two results is proved. Stalnaker's proposed results are: (1) if at the true state of an epistemic model of a perfect information game there is common belief in the rationality of every player and common belief that no player has false beliefs (he calls this joint condition ‘strong rationalizability’), then the true (or actual) strategy profile is path equivalent (...) to a Nash equilibrium; (2) in a normal-form game a strategy profile is strongly rationalizable if and only if it belongs to C8 , the set of profiles that survive the iterative deletion of inferior profiles. (shrink)

A syntactic formalism for the modeling of belief revision in perfect information games is presented that allows to define the rationality of a player's choice of moves relative to the beliefs he holds as his respective decision nodes have been reached. In this setting, true common belief in the structure of the game and rationality held before the start of the game does not imply that backward induction will be played. To derive backward induction, a “forward belief” condition (...) is formulated in terms of revised rather than initial beliefs. Alternative notions of rationality as well as the use of knowledge instead of belief are also studied within this framework. Footnotes1 I would like to thank Wlodek Rabinowicz and three anonymous referees for very helpful comments. (shrink)

For the past 20 years or so the literature on noncooperative games has been centered on the search for an equilibrium concept that expresses the notion of rational behavior in interactive situations. A basic tenet in this literature is that if a “rational solution” exists, it must be a Nash equilibrium. The consensus view, however, is that not all Nash equilibria can be accepted as rational solutions. Consider, for example, the game of Figure 1.

The paper provides a framework for representing belief-contravening hypotheses in games of perfect information. The resulting t-extended information structures are used to encode the notion that a player has the disposition to behave rationally at a node. We show that there are models where the condition of all players possessing this disposition at all nodes (under their control) is both a necessary and a sufficient for them to play the backward induction solution in centipede games. To obtain (...) this result, we do not need to assume that rationality is commonly known (as is done in [Aumann (1995)]) or commonly hypothesized by the players (as done in [Samet (1996)]). The proposed model is compared with the account of hypothetical knowledge presented by Samet in [Samet (1996)] and with other possible strategies for extending information structures with conditional propositions. (shrink)

Jeff Speaks has recently argued that perfect being theology treating God as the greatest possible being—he calls it alethic perfect being theology—cannot deliver new information about God. This argument is central to his critique of all forms of perfect being theology. For as Speaks sees it, other forms of perfect being theology may collapse into alethic perfect being theology, i.e. fail in the end to be a different sort of project. I lay out how (...) he understands alethic perfect being theology and then contest his argument. (shrink)

We examine a definition of the mutual information of two reals proposed by Levin in [5]. The mutual information iswhereK is the prefix-free Kolmogorov complexity. A realAis said to have finite self-information ifI is finite. We give a construction for a perfect Π10class of reals with this property, which settles some open questions posed by Hirschfeldt and Weber. The construction produces a perfect set of reals withK≤+KA+f for any given Δ20fwith a particularly nice approximation and (...) for a specific choice of f it can also be used to produce a perfect Π10set of reals that are low for effective Hausdorff dimension and effective packing dimension. The construction can be further adapted to produce a single perfect set of reals that satisfyK≤+KA+f for allfin a ‘nice’ class of Δ20functions which includes all Δ20orders. (shrink)

Ideas for integrating AI into politics are now emerging and advancing at accelerating pace. This chapter highlights a few different varieties and show how they reflect different assumptions about the value of democracy. We cannot make informed decisions about which, if any, proposals to pursue without further reflection on what makes democracy valuable and how current conditions fail to fully realize it. Recent advances in political philosophy provide some guidance but leave important questions open. If AI advances to a state (...) where it can secure superior political outcomes, leading perspectives in political philosophy suggest that democracy may become obsolete. If we find this suggestion troubling, we need to put the case for democracy on stronger foundations. (shrink)

Prenatal and preimplantation testing technologies have offered unprecedented access to information about the genetic and congenital makeup of our prospective progeny. Future developments such as preconception testing, non-intrusive prenatal testing and more extensive preimplantation testing promise to increase that access further still. The result may be greater reproductive choice, but it also increases the burden on women and men to avail themselves of these technologies in order to avoid having a child with a disability. The overwhelming question for legislators (...) has been whether and, if so, how to regulate the use of these technologies in the face of compelling but seemingly contradictory claims about the advancement of reproductive choice and the dangers of eugenic or discriminatory effects. This book examines the evolution of this legislative oversight across a number of jurisdictions and explores the tensions and ambiguities that inform these laws. (shrink)

In this article, we seek to contribute to the debate on the requirement of disclosure in the context of informed consent for research. We defend the subjective standard of disclosure and describe ways to implement this standard in research practice. We claim that the researcher should make an effort to find out what kinds of information are likely to be relevant for those consenting to research. This invites researchers to take empirical survey information seriously, attempt to understand the (...) cultural context, talk to patients to be better able to understand what can be potentially different concerns and interests prevalent in the target population. The subjective standard of disclosure should be seen as a moral ideal that perhaps can never be perfectly implemented but still can and should be used as a normative ideal guiding research practice. In the light of these discussions, we call for more empirical research on what considerations are likely to be perceived as relevant by potential research participants recruited from different socio-economic and cultural groups. (shrink)

This paper suggests a way of formalizing the amount of information that can be conveyed to each player along every possible play of an extensive game. The information given to each player i when the play of the game reaches node x is expressed as a subset of the set of terminal nodes. Two definitions are put forward, one expressing the minimum amount of information and the other the maximum amount of information that can be conveyed (...) without violating the constraint represented by the information sets. Our definitions provide intuitive characterizations of such notions as perfect recall, perfect information and simultanetty. (shrink)

It is often thought that traditional recidivism prediction tools used in criminal sentencing, though biased in many ways, can straightforwardly avoid one particularly pernicious type of bias: direct racial discrimination. They can avoid this by excluding race from the list of variables employed to predict recidivism. A similar approach could be taken to the design of newer, machine learning-based (ML) tools for predicting recidivism: information about race could be withheld from the ML tool during its training phase, ensuring that (...) the resulting predictive model does not use race as an explicit predictor. However, if race is correlated with measured recidivism in the training data, the ML tool may ‘learn’ a perfect proxy for race. If such a proxy is found, the exclusion of race would do nothing to weaken the correlation between risk (mis)classifications and race. Is this a problem? We argue that, on some explanations of the wrongness of discrimination, it is. On these explanations, the use of an ML tool that perfectly proxies race would (likely) be more wrong than the use of a traditional tool that imperfectly proxies race. Indeed, on some views, use of a perfect proxy for race is plausibly as wrong as explicit racial profiling. We end by drawing out four implications of our arguments. (shrink)

People v. Strauss-Kahn is an ideal lens through which to examine the operation of a criminal justice system that privileges the presumption of guilt, or, to use the words of the US Supreme Court in the 2012 decisions Lafler v. Cooper and Missouri v. Frye, has become “a system of pleas, not a system of trials.” It is both an excellent example of a transparent and objective invocation of the criminal sanction, and a sharp counterpoint to the vast majority of (...) cases where law enforcement conclusions are privileged and rarely second-guessed. As analyses of wrongful convictions have sadly but inevitably demonstrated, the screening methods of police and prosecutors are fallible. Moreover, the prevalence of “tunnel vision” once the decision to charge has been made means that few cases experience the kind of post-indictment investigation and reevaluation seen in the prosecution of Dominique Strauss-Kahn. Stage by stage, the Strauss-Kahn case illustrates how to counterbalance the presumption of guilt and give expression to the presumption of innocence in the pretrial period through vigilantly-invoked and enforced due process protections. Drawing from this examination, the paper will then explore how to approach this model process in the more standard cases, which typically see a fraction of the judicial, law enforcement, and defense resources afforded Dominique Strauss-Kahn. The Strauss-Kahn prosecution offers several insights, three of which will be sketched at the paper’s conclusion: a requirement that prosecutorial decision-making be subject to a reasonable doubt standard; vigilant and early enforcement of the prosecutor’s obligation to disclose information that is favorable to the accused; and finally, a requirement that a prosecutor explain in writing any decision to dismiss the felony charges in indicted felony cases, so that the factual, legal and policy bases of these decisions (numbering almost one quarter of New York’s superior court felony cases annually) can be analyzed and publicized. (shrink)

In this study, we used a word search puzzle paradigm to investigate age differences in the rate of information gain and the cues used to make patch-departure decisions in information foraging. The likelihood of patch departure increased as the profitability of the patch decreased generally. Both younger and older adults persisted past the point of optimality as defined by the marginal value theorem, which assumes perfect knowledge of the foraging ecology. Nevertheless, there was evidence that adults were (...) rational in terms of being sensitive to the change in RG for making the patch-departure decisions. However, given the limitations in cognitive resources and knowledge about the ecology, the estimation of RG may not be accurate. Younger adults were more likely to leave the puzzle as the long-term RG incrementally decreased, whereas older adults were more likely to leave the puzzle as the local RG decreased. However, older adults with better executive control were more likely to adjust their likelihood of patch-departure decisions to the long-term change in RG. Thus, age-dependent reliance on the long-term or local change in RG to make patch-departure decisions might be due to individual differences in executive control. (shrink)

Stoffregen & Bardy's target article is based on the assumption that our senses' ultimate purpose is to provide us with perfect information about the outside world. We argue that it is often more important that information be available quickly than that it be perfect. Consequently our nervous system processes different aspects of information about our surrounding as separately as possible. The separation is not between the senses, but between separate aspects of our surrounding. This results (...) in inconsistencies between judgments: sometimes because different frames of reference are used. Such inconsistencies are fundamental to the way the information is picked up, however, and hence cannot be avoided with clearer instructions to the subjects. (shrink)

Many important issues in economic and political science can be adequately analyzed under the assumption that individuals are certain about the consequences of their actions, possess perfect information. Many cannot, however, and models that incorporate uncertainty and asymmetric information have become increasingly popular over the last fifty years or so.

According to the standard view of informed consent, a prospective subject's consent to participate in a research study is invalid if the individual fails to comprehend the information about the study standardly disclosed to him. I argue that this involves three mistakes. First, the standard view confuses an ethical aspiration with a minimum ethical standard. Second, it assigns the entire responsibility for producing comprehension in study participants to the investigators. Most importantly, the standard view requires the termination of many (...) otherwise perfectly ethical research studies. This last conclusion follows from appreciating a pervasive phenomenon that is known as the "therapeutic misconception." I argue that a prospective subject's consent to participate in research can be perfectly valid even if he or she does not comprehend the information that investigators are required to disclose. Furthermore, I explain that this alternative view does not in the least compromise the vital goal of ensuring the protection of subjects in research. (shrink)

Both, bioconservatives and bioliberals, should seek a discussion about ideas of human perfection, making explicit their underlying assumptions about what makes for a good human life. This is relevant, because these basic, and often implicit ideas, inform and influence judgements and choices about human enhancement interventions. Both neglect, and polemical but inconsistent use of the complex ideas of perfection are leading to confusion within the ethical debate about human enhancement interventions, that can be avoided by tackling the notion of perfection (...) directly. In the recent debates, bioconservatives have prominently argued against the ‘pursuit of perfection’ by biotechnological means. In the first part of this paper, we show that—paradoxically—bioconservatives themselves explicitly embrace specific conceptions of human perfection and perfectionist assumptions about the good human life in order to argue against the use of enhancement technologies. Yet, we argue that the bioconservative position contains an untenable ambiguity between criticising and endorsing ideas of human perfection. Hence, they stand in need of clarifying their stance on human perfection. In the second part of the paper, we ask whether bioliberals in fact (implicitly) advocate a particular conception of perfection, or whether they are right in holding that they do not, and that discussing perfection is obsolete anyway. We show that bioliberals also rely on a specific idea of human perfection, based on the idea of autonomy. Hence, their denial of the relevance of perfection in the debate is unconvincing and has to be revised. (shrink)

There is a new theory of information based on logic. The definition of Shannon entropy as well as the notions on joint, conditional, and mutual entropy as defined by Shannon can all be derived by a uniform transformation from the corresponding formulas of logical information theory. Information is first defined in terms of sets of distinctions without using any probability measure. When a probability measure is introduced, the logical entropies are simply the values of the probability measure (...) on the sets of distinctions. The compound notions of joint, conditional, and mutual entropies are obtained as the values of the measure, respectively, on the union, difference, and intersection of the sets of distinctions. These compound notions of logical entropy satisfy the usual Venn diagram relationships since they are values of a measure. The uniform transformation into the formulas for Shannon entropy is linear so it explains the long-noted fact that the Shannon formulas satisfy the Venn diagram relations--as an analogy or mnemonic--since Shannon entropy is not a measure on a given set. What is the logic that gives rise to logical information theory? Partitions are dual to subsets, and the logic of partitions was recently developed in a dual/parallel relationship to the Boolean logic of subsets. Boole developed logical probability theory as the normalized counting measure on subsets. Similarly the normalized counting measure on partitions is logical entropy--when the partitions are represented as the set of distinctions that is the complement to the equivalence relation for the partition. In this manner, logical information theory provides the set-theoretic and measure-theoretic foundations for information theory. The Shannon theory is then derived by the transformation that replaces the counting of distinctions with the counting of the number of binary partitions it takes, on average, to make the same distinctions by uniquely encoding the distinct elements--which is why the Shannon theory perfectly dovetails into coding and communications theory. (shrink)

The semantics of the independence friendly logic of Hintikka and Sandu is usually defined via a game of imperfect information. We give a definition in terms of a game of perfect information. We also give an Ehrenfeucht-Fraïssé game adequate for this logic and use it to define a Distributive Normal Form for independence friendly logic.

Probabilistic theories are a natural framework to investigate the foundations of quantum theory and possible alternative or deeper theories. In a generic probabilistic theory, states of a physical system are represented as vectors of outcomes probabilities and state spaces are convex cones. In this picture the physics of a given theory is related to the geometric shape of the cone of states. In quantum theory, for instance, the shape of the cone of states corresponds to a projective space over complex (...) numbers. In this paper we investigate geometric constraints on the state space of a generic theory imposed by the following information theoretic requirements: every non completely mixed state of a system is perfectly distinguishable from some other state in a single shot measurement; information capacity of physical systems is conserved under making mixtures of states. These assumptions guarantee that a generic physical system satisfies a natural principle asserting that the more a state of the system is mixed the less information can be stored in the system using that state as logical value. We show that all theories satisfying the above assumptions are such that the shape of their cones of states is that of a projective space over a generic field of numbers. Remarkably, these theories constitute generalizations of quantum theory where superposition principle holds with coefficients pertaining to a generic field of numbers in place of complex numbers. If the field of numbers is trivial and contains only one element we obtain classical theory. This result tells that superposition principle is quite common among probabilistic theories while its absence gives evidence of either classical theory or an implausible theory. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Imperfect Men in Perfect Societies:Human Nature in UtopiaGorman BeauchampIUtopists view man as a product of his social environment. Nothing innate in the psychic make-up of man—no inherent flaw in his nature, no inheritance of original sin—prevents his being perfected, or at least radically ameliorated, once the social structure that shapes character can be properly reordered. Utopists, in short, deny that there is such a thing as "human nature"—if, (...) as John Plamenatz suggests, to say that something is human nature is just another way of saying that it cannot be changed.1 To accept the psychic constitution of man as fixed, immutable, is anathema to utopists, who agree rather with Ortega y Gasset: "Man has no nature. What he has is history."2 The social conditions that have obtained historically, that is to say, have made man what he has been—anything but utopian; but if man's history could be changed, so could his "nature." The idea of Progress, so pervasive in the West from the seventeenth century on, lends some credence to this contention. W. D. Howells's Altrurians, their creator notes, "get some sad amusement out of the fact that the capitalist world believes human nature cannot be changed, though cannibalism and slavery and polygamy have all been extirpated in the so-called Christian countries, and these things were once human nature, which is always changing...."3 Utopia is merely a means, then, of imaginatively expediting, directing, culminating the historically progressive creation of a morally exemplary race of men.The environmentalist psychology espoused by utopists springs from one of two anterior assumptions (although in the creation of many fictional idola the distinction between them is often blurred). The first [End Page 280] assumption is formulated most famously by Rousseau in the Discourse on Inequality: that "man is naturally good, and only by his institutions is he made bad."4 The second assumption is formulated most famously by Locke in the Essay Concerning Human Understanding: that the mind—and by extension the character—is a tabula rasa that takes impression from the stimuli exerted by the external world and thus is neither innately good or bad, but plastic, malleable.5 An intriguing conflation of these two theories operates, for instance, in the psyche of the monster in Mary Shelley's Frankenstein. In the long middle section of the book, where the monster's side of the story is presented sympathetically, his character develops in a text-book demonstration of Lockean psychology; yet, at the same time, this lumbering tabula rasa quivers with enough benevolence (the implausible provenance of which mystifies) to put most saints to shame. He becomes evil and destructive only after being persecuted unmercifully for his misshapen appearance.6 Indeed, the criminal career of Mary Shelley's monster rehearses the common utopian argument that society's injustice to man (or monster) is the source of his crimes. "With our present state of society," writes James Casey in A New Moral World (1885), "we manufacture criminals and then punish them for being so."7 H. G. Wells, in A Modern Utopia (1905), concurs: "Crime and bad lives are the measure of the State's failure, all crime in the end is the crime of the community."8 And both are but restating the charge of Sir Thomas More's Raphael Hytholoday, leveled several centuries earlier in the original Utopia (1519): "If you allow people to be badly brought up and their habits to be corrupted little by little from childhood and if you then punish them for crimes to which their early training has disposed them, what else is this, I ask, but first making them thieves and then punishing them for it?"9 Evil deeds, then, to reiterate the utopist's point, result not from some vicious mole in human nature, but from the malfunctioning of society itself. Utopia, by contrast, is—or theoretically ought to be—a world without crime.Rousseau's concept of the innate goodness of man and the evil of his institutions most often informs primitivist models of utopia, exotic worlds inhabited by noble savages uncorrupted by civilization. The idealized Indians of Montaigne's essay... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Past, Present—and Future Perfect?Taking Psychiatry Beyond Its Single Message MythologiesK. W. M. Fulford (bio)I am grateful to John Sadler and his colleagues for their generous invitation to contribute to this collection marking Philosophy, Psychiatry, & Psychology (PPP)'s thirtieth birthday. True to our editorial tradition of "no nonsense" publishing, the "ask" was a reflection on PPP's past, present and future, limited to 500 words. In fact, one word does (...) it for me—collegiality.Collegiality was our watch word from the start. I still treasure a group photo taken at an early pre-meeting of the Association for the Advancement of Philosophy and Psychiatry (AAPP) convened by Michael Schwartz at his home in 1992, when, among other initiatives, PPP was conceived through transferring our then-nascent journal proposal from a small British publishing house to its current international publisher, the Johns Hopkins University Press. Michael and I had met earlier by phone when he had called the Royal College of Psychiatrists in London to enquire about its recently launched Philosophy Group and (by mere chance) I happened to be standing next to the person who took the call! PPP, with John and myself its founder editors, was subsequently born as, and has remained, a joint venture between our two groups: and Peter Zachar's recent initiative in building closer links with the International Network for Philosophy and Psychiatry (INPP) has taken us an important step towards the vision shared by Michael, John and myself that PPP should grow to reflect and represent a global open society of philosophy and mental health.As a pointer to the future, this global open society was no mere utopian vision but a joint commitment to what we conceived as a necessary ambition. Contemporary disenchantment with the repeated failures of translation of current narrowly empirical models of psychiatry, points to the truth of our German colleague, Paul Hoff's, characterization of the history of psychiatry as a history of serial collapses into single message mythologies. This disenchantment might seem to offer an opportunity for colonial expansion of philosophy into psychiatry (a re-assertion, perhaps, of phenomenology?). But PPP was born out of the "decade of the brain" and has remained throughout an ally of, not competitor to, the neurosciences. [End Page 3] So, while it is true that, with Peter's initiative, and with editorial and other innovations introduced by John, PPP is actively extending its reach (to new areas of philosophy, and to new voices, informed notably by experience as well as by training), this expansion remains a collegial not colonial enlargement of the field. I need hardly point to the challenges presented by the inclusive ambitions of such enlargement (not least to maintaining the highest standards of editorial and peer review). But PPP's collegiality provides the foundation for the work needed to deliver on these challenges. Even if imperfectly realized, this collegiality will help to take us beyond the single message mythologies by which our discipline has too long been hobbled. [End Page 4]K. W. M. Fulford K.W.M. (Bill) Fulford is a Fellow of St Catherine's College and Member of the Philosophy Faculty, University of Oxford; Emeritus Professor of Philosophy and Mental Health, University of Warwick Medical School; and Founder Director of the Collaborating Centre for Values-based Practice, St Catherine's College, Oxford (valuesbasedpractice.org).Copyright © 2023 Johns Hopkins University Press... (shrink)

On Aquinas’s account of this virtue, martyrdom fits best as its paradigm act. By this choice of paradigm, he underscores the way that the virtues of faith, hope, and charity inform courage, and the way grace infuses virtue and produces a joy that can overcome even the greatest fear and sorrow this world has to offer. Martyrdom, as the exemplar act of courage, is best suited to illustrate the features of this virtue so as to counter any mistaken conceptions of (...) courage—those relying solely on human power and control— that ancient and modern ideals alike might tempt us to hold. Aquinas’s choice ofmartyrdom as his paradigm introduces new dimensions of courage and redefines the standard elements of other portraits. His paradigm introduces a new understanding of power, one that resists the world’s eager use of force and offers grace-filled possibilities for human beings precisely in their vulnerability and weakness. Aquinas’s portrait of courage supplies new dimensions of love to counteract fear, and transforms the basis of hope and daring from human heroics to a relationship of humble dependence on divine assistance. In doing so, it also opens up this virtue to an entirely new range of practitioners. The infant in the baptismal waters is a fitting picture of human frailness and trust before the gift of divine grace and power, and captures the essential point of Aquinas’s baptismal transformation of courage. By modeling courage on the example of Christ’s own suffering and steadfast witness, Aquinas directs our moral gaze beyond the limits of human life and power to a life in which virtue and happiness are perfected by a power that is both beyond us and yet can become our own. (shrink)

One of the major puzzles in evolutionary theory is how communication and information transfer are possible when the interests of those involved conflict. Perfect information transfer seems inevitable if there are physical constraints, which limit the signal repertoire of an individual, effectively making bluffing an impossibility. This, I argue, is incorrect. Unfakeable signals by no means guarantee information transfer. I demonstrate the existence of a so-called pooling equilibrium and discuss why the traditional argument for perfect (...) information transfer does not hold in all cases. Additionally, I demonstrate that deception is possible at equilibrium despite the fact that signals are impossible to fake. (shrink)

I argue that there is nothing wrong with perfect voyeurism , covert watching or listening that is neither discovered nor publicized. After a brief discussion of privacy I present attempts from Stanley Benn, Daniel Nathan, and James Moor to show that the act is wrong. I argue that these authors fail to make their case. However, I maintain that, if detected or publicized, voyeurism can do grave harm and to that extent should be severely punished. I conclude with some (...) thoughts on the stubborn intuition that perfect voyeurism is wrong despite the absence of harm. (shrink)

Restricting attention to the class of extensive games defined by von Neumann and Morgenstern with the added assumption of perfect recall, we specify the information of each player at each node of the game-tree in a way which is coherent with the original information structure of the extensive form. We show that this approach provides a framework for a formal and rigorous treatment of questions of knowledge and common knowledge at every node of the tree. We construct (...) a particular information partition for each player and show that it captures the notion of maximum information in the sense that it is the finest within the class of information partitions that satisfy four natural properties. Using this notion of “maximum information” we are able to provide an alternative characterization of the meet of the information partitions. (shrink)

Denef and Loeser defined a map from the Grothendieck ring of sets definable in pseudo-finite fields to the Grothendieck ring of Chow motives, thus enabling to apply any cohomological invariant to these sets. We generalize this to perfect, pseudo algebraically closed fields with pro-cyclic Galois group. In addition, we define some maps between different Grothendieck rings of definable sets which provide additional information, not contained in the associated motive. In particular we infer that the map of Denef-Loeser is (...) not injective. (shrink)

Two dominant interpretations of Kant's notion of adherent beauty, the conjunctive view and the incorporation view, provide an account of how to form informed aesthetic assessments concerning artworks. According to both accounts, judgments of perfection play a crucial role in making informed, although impure, judgments of taste. These accounts only examine aesthetic responses to objects that meet or fail to meet the expectations we have regarding what they ought to be. I demonstrate that Kant's works of genius do not fall (...) within either of these categories. The distinguishing features of these works, namely, originality and exemplarity, become unrecognizable on these interpretations because originality and exemplarity lie in the work's ability to exceed one's expectations concerning its form and content. They contribute to artistic beauty through alternative transformation methods distinct from that of abstraction, namely, concept expansion and repudiation. These additional accounts of transformation lead to a rather surprising outcome: works of genius turn out to be paradigm cases where one can and indeed ought to form informed pure judgments of taste. (shrink)

‘According to informational semantics, if it's necessary that a creature can't distinguish Xs from Ys, it follows that the creature can't have a concept that applies to Xs but not Ys.’ There is, indeed, a form of informational semantics that has this verificationist implication. The original definition of information given in Dretske'sKnowledge and the Flow of Information, when employed as a base for a theory of intentional representation or ‘content,’ has this implication. I will argue that, in fact, (...) most of what an animal needs to know about its environment is not available as natural information of this kind. It is true, I believe, that there is one fundamental kind of perception that depends on this kind of natural information, but more sophisticated forms of inner representation do not. It is unclear, however, exactly what ‘natural information’ is supposed to mean, certainly in Fodor's, and even in Dretske's writing. In many places, Dretske seems to employ a softer notion than the one he originally defines. I will propose a softer view of natural information that is, I believe, at least hinted at by Dretske, and show that it does not have verificationist consequences. According to this soft informational semantics, a creature can perfectly well have a representation of Xs without being able to discriminate Xs from Ys. (shrink)

Negative acknowledgement is an impression management technique that uses the admission of an unfavourable quality to mitigate a negative response. Although the technique has been clearly demonstrated, the underlying process is not well understood. The current research identifies a key mediator and moderator while also demonstrating that the effect extends beyond the specific acknowledged domain to the overall evaluation of a target object. The results of study 1 indicate that negative acknowledgement works through mitigating negatively valenced cognitive responses. People who (...) are presented with a negative acknowledgement are less likely to counterargue when forming an evaluation. The results of study 2 reveal that individual differences in need for structure impact the effectiveness of the technique. People who are high in need for structure are more susceptible to the effect presumably because of their desire for easy-to-use information that aids the formation and maintenance of simple knowledge structures. (shrink)

Background: how mind functions is subject to continuing scientific discussion. A simplistic approach says that, since no convincing way has been found to model subjective experience, mind cannot exist. A second holds that, since mind cannot be described by classical physics, it must be described by quantum physics. Another perspective concerns mind's hypothesized ability to interact with the world of quanta: it should be responsible for reduction of quantum wave packets; physics producing 'Objective Reduction' is postulated to form the basis (...) for mind-matter interactions. This presentation describes results derived from a new approach to these problems. It is based on well-established biology involving physics not previously applied to the fields of mind, or consciousness studies, that of critical feedback instability. -/- Methods: 'self-organized criticality' in complexity biology places system loci of control at critical instabilities, physical properties of which, including information properties, are presented. Their elucidation shows that they can model hitherto unexplained properties of experience. -/- Results: All results depend on physical properties of critical instabilities. First, at least one feed-back or feed-forward loop must have feedback gain, g = 1: information flows round the loop impress perfect images of system states back on themselves: they represent processes of perfect self-observation. This annihilates system quanta: system excitations are instability fluctuations, which cannot be quantized. Major results follow: -/- 1. Information vectors representing criticality states must include at least one attached information loop denoting self-observation. -/- 2. Such loop structures are attributed a function, 'registering the state's own existence', explaining -/- a. Subjective 'awareness of one's own presence' -/- b. How content-free states of awareness can be remembered (Jon Shear) -/- c. Subjective experience of time duration (Immanuel Kant) -/- d. The 'witness' property of experience – often mentioned by athletes 'in the zone' -/- e. The natural association between consciousness and intelligence -/- This novel, physically and biologically sound approach seems to satisfactorily model subjectivity. -/- Further significant results follow: -/- 1. Registration of external information in excited states of systems at criticality reduces external wave-packets: the new model exhibits 'Objective Reduction' of wave packets. -/- 2. High internal coherence (postulated by Domash & Penrose) leading to a. Non-separable information vector bundles. b. Non-reductive states (Chalmers's criterion for experience). -/- 3. Information that is: a. encoded in coherence negentropy; b. non-digitizable, and therefore c. computationally without digital equivalent (posited by Penrose). -/- Discussion and Conclusions: instability physics implies anharmonic motion, preventing excitation quantization, and totally different from the quantum physics of simple harmonic motion at stability. Instability excitations are different from anything hitherto conceived in information science. They can model aspects of mind never previously treated, including genuine subjectivity, objective reduction of wave-packets, and inter alia all properties given above. (shrink)

To fulfill a perfect duty an agent must avoid vice, yet when an agent refrains from acting on a prohibited maxim she still must do something. I argue that the setting of morally required ends ought to consistently inform an agent's judgment regarding what is to be done beyond compliance with perfect, negative duties. Kant's assertion of a puzzling version of latitude of choice within his discussion of perfect duties motivates and complicates the case I make for (...) a more expansive interpretation of the duty to pursue virtue. (shrink)

Constraints and dependencies among the elements of embodied cognition form patterns or microstrategies of interactive behavior. Hard constraints determine which microstrategies are possible. Soft constraints determine which of the possible microstrategies are most likely to be selected. When selection is non‐deliberate or automatic the least effort microstrategy is chosen. In calculating the effort required to execute a microstrategy each of the three types of operations, memory retrieval, perception, and action, are given equal weight; that is, perceptual‐motor activity does not have (...) a privileged status with respect to memory. Soft constraints can work contrary to the designer's intentions by making the access of perfect knowledge in‐the‐world more effortful than the access of imperfect knowledge in‐the‐head. These implications of soft constraints are tested in two experiments. In experiment 1 we varied the perceptual‐motor effort of accessing knowledge in‐the‐world as well as the effort of retrieving items from memory. In experiment 2 we replicated one of the experiment 1 conditions to collect eye movement data. The results suggest that milliseconds matter. Soft constraints lead to a reliance on knowledge in‐the‐head even when the absolute difference in perceptual‐motor versus memory retrieval effort is small, and even when relying on memory leads to a higher error rate and lower performance. We discuss the implications of soft constraints for routine interactive behavior, accounts of embodied cognition, and tool and interface design. (shrink)

It is widely agreed that the view of informed consent found in the regulations and guidelines struggles to keep pace with the ever-advancing enterprise of human subjects research. Over the last 10 years, there have been serious attempts to rethink informed consent so that it conforms to our considered judgments about cases where we are confident valid consent has been given. These arguments are influenced by an argument from Gopal Sreenivasan, which apparently shows that a potential participant's consent to research (...) participation can be perfectly valid even if she fails to understand the risk-benefit profile of the study. I argue that Sreenivasan's argument fails. The set of clinical trials that is supposed to be ethical in the face of this kind of ignorance is empty. However, I argue that his argument is nonetheless instructive in allowing us to identify three important but neglected areas for future conceptual research on informed consent. I close by arguing that research on these identified questions promises to yield a defensible view of consent, lessen the burden of ambiguity on researchers attempting to obtain consent to research participation, and facilitate socially valuable research. (shrink)

The article deals with the self-education of future specialists in the field of culture and art within the context of philosophical, psychological, and pedagogical studies of the postmodern era. This substantiates the need to use e-learning in professional training. The use of cloud computing technologies is one of the educational process’ innovations. As shown by our research and personal experience implementing cloud computing technologies into the educational process proves to be feasible for training future professionals in the field of culture (...) and art, including their self-education. The article shows that the aim of self-education of the future professionals in the field of culture and art is personal and professional perfection, and also achievement, at the maximum possible level, of the creative ideal. Today their professional training is focused on self-perfection, ability to self-educate, skill to foresee the consequences of their professional activity and search for the new ways to solve their professional tasks using ICT. The article justifies that cloud computing technologies allow spreading content in the Internet, they facilitate posting the text messages, photographs, pictures and musical files. Accessibility, openness, interactivity of the cloud computing technologies cause their wide use for both on-line and off-line communication, data sharing of text, multimedia and audio resources for all participants of the educational process that enriches the self-education of future professionals in the field of culture and art and makes it rich in content, practically-oriented and enhances professional competence. The article concludes that e-learning best meets methodological requirements of the postmodern society. (shrink)

This book argues that the verbal aspect of the Greek Perfect is complex, involving not one but two aspects, where the perfective applies to events and the imperfective applies to states. These two aspects are connected to specific morphemes in the Perfect tense-form. This study analyses Perfect tense-forms in discursive text by focusing on the Pauline Corpus. The method is grounded in grammaticalisation studies and informed by morphology, comparative linguistics, and historical linguistics. The argument is further supported (...) by a corpus-based study showing both the Greek Perfect tense-form use in letters over an 800-year period and adverb collocations of the Perfect tense-form. The adverb collocations establish when a Perfect is used for an event or for a state. This study challenges other verbal aspect studies that find only one verbal aspect to explain the Greek Perfect. This study situates the Pauline Perfect tense-form usage within a spectrum of other letter writers, and finds that within the Pauline Corpus the Perfects within supplemental clauses are more likely to use active lexemes than other letter writers. This study also finds that most of the Perfects used in letters are supplemental to the mainline and are often backgrounded rather than foregrounded. (shrink)

This book argues that the verbal aspect of the Greek Perfect is complex, involving not one but two aspects, where the perfective applies to events and the imperfective applies to states. These two aspects are connected to specific morphemes in the Perfect tense-form. This study analyses Perfect tense-forms in discursive text by focusing on the Pauline Corpus. The method is grounded in grammaticalisation studies and informed by morphology, comparative linguistics, and historical linguistics. The argument is further supported (...) by a corpus-based study showing both the Greek Perfect tense-form use in letters over an 800-year period and adverb collocations of the Perfect tense-form. The adverb collocations establish when a Perfect is used for an event or for a state. This study challenges other verbal aspect studies that find only one verbal aspect to explain the Greek Perfect. This study situates the Pauline Perfect tense-form usage within a spectrum of other letter writers, and finds that within the Pauline Corpus the Perfects within supplemental clauses are more likely to use active lexemes than other letter writers. This study also finds that most of the Perfects used in letters are supplemental to the mainline and are often backgrounded rather than foregrounded. (shrink)

A theory of information is developed in which the informational content of a signal (structure, event) can be specified. This content is expressed by a sentence describing the condition at a source on which the properties of a signal depend in some lawful way. Information, as so defined, though perfectly objective, has the kind of semantic property (intentionality) that seems to be needed for an analysis of cognition. Perceptual knowledge is an information-dependent internal state with a content (...) corresponding to the information producing it. This picture of knowledge captures most of what makes knowledge an important cpistcmological notion. It also avoids many of the problems infecting traditional justificational accounts of knowledge (knowledge as [justified, true belief those (unlike knowledge) having a content that can be either true or false (e.g., belief) – are described in terms of the way internal (presumably neural) structures acquire during learning a certain information-carrying role. The content of these structures (whether true or false) is identified with the kind of information they were developed to carry. (shrink)

This paper examines the relationship between Savage's sure thing principle and the value of information. We present two classes of results. First, we show that, under a consequentialist axiom, the sure-thing principle is neither sufficient nor necessary for perfect information to be always desirable: specifically, under consequentialism, the sure thing principle is not implied by the condition that perfect information is always valuable; moreover, the joint imposition of the sure thing principle, consequentialism and either one (...) of two state independence axioms does not imply that perfect information is always desirable. Second, we demonstrate that, under consequentialism, the sure thing principle is necessary for a nonnegative value of possibly imperfect information (though of course the principle is still not sufficient). One implication of these results is that the sure thing principle, under consequentialism, plays a somewhat different role in ensuring dynamic consistency in decision making under uncertainty than does the independence axiom in decision making under risk. (shrink)

This 1992 book examines alternative methods for achieving optimality without all the apparatus of economic planning, or a vain reliance on sufficiently 'perfect' competition. All rely entirely on the self-interest of economic agents and voluntary contract. The author considers methods involving feedback iterative controls which require the prior selection of a 'criterion function', but no prior calculation of optimal quantities. The target is adjusted as the results for each step become data for the criterion function. Implementation is built in (...) by the incentive structure, and all controls rely on consistency with the self-interest of individuals. The applicability of all the methods is shown to be independent of the form of ownership of enterprises: examples are given for industries which are wholly privately owned, wholly nationalized, mixed and labour-managed. (shrink)

Should software be sold “as is”, totally guaranteed, or something else? This paper suggests that “informed consent”, used extensively in medical ethics, is an appropriate way to envision the buyer/developer relationship when software is sold. We review why the technical difficulties preclude delivering perfect software, but allow statistical predictions about reliability. Then we borrow principles refined by medical ethics and apply them to computer professionals.

To consider whether or not we should aim to create a perfect healthy utopia on Earth, we focus on the SF novel Harmony, written by Japanese writer Project Ito, and analyze various issues in the world established in the novel from a bioethical standpoint. In the world depicted in Harmony, preserving health and life is a top priority. Super-medicine is realized through highly advanced medical technologies. Citizens in Harmony are required to strictly control themselves to achieve perfect health (...) and must always disclose their health information to the public and continuously prove their health. From a bioethical standpoint, the world in Harmony is governed by a “healthy longevity supremacy” principle, with being healthy equated to being good and right. Privacy no longer exists, as it is perceived ethical for citizens to openly communicate health-related information to establish one’s credibility. Moreover, there is no room for self-determination concerning healthcare because medical interventions and care are completely routinized, automated, centralized, and instantly provided. This is a situation where the community exhibits extremely powerful and effective paternalism. One can argue that healthy longevity is highly preferred. But is it right to aim for a perfectly healthy society at all costs? Should we sacrifice freedom, privacy, vivid feelings, and personal dignity to achieve such a world? In our view, the answer is no, as this would require the loss of many essential values. We conclude by proposing an alternative governing principle for future healthcare, and refer to it as the “do-everything-in-moderation” principle. (shrink)

We present a variant of ATL with incomplete information which includes the distributed knowledge operators corresponding to synchronous action and perfect recall. The cooperation modalities assume the use the distributed knowledge of coalitions and accordingly refer to perfect recall incomplete information strategies. We propose a model-checking algorithm for the logic. It is based on techniques for games with imperfect information and partially observable objectives, and involves deciding emptiness for automata on infinite trees. We also propose (...) an axiomatic system and prove its completeness for a rather expressive subset. As for the constructs left outside this completely axiomatised subset, we present axioms by which they can be defined in the subset on the class of models in which every state has finitely many successors and give a complete axiomatisation for a “flat” subset of the logic with these constructs included. (shrink)