Lewis signaling games illustrate how language might evolve from random behavior. The probability of evolving an optimal signaling language is, in part, a function of what learning strategy the agents use. Here we investigate three learning strategies, each of which allows agents to forget old experience. In each case, we find that forgetting increases the probability of evolving an optimal language. It does this by making it less likely that past partial success will continue to reinforce suboptimal practice. The learning (...) strategies considered here show how forgetting past experience can promote learning in the context of games with suboptimal equilibria. (shrink)

The use of deception in medical care is highly suspect in this country. Yet there is one condition for which deception is often used as a diagnostic tool. Nonepileptic seizures, a psychiatric condition in which emotional or psychological conflicts manifest themselves unconsciously through bodily symptoms, are currently diagnosed by a procedure called “provocative saline infusion.” The test is fundamentally deceptive, requiring the physician to intentionally and directly lie to the patient, causing the patient to believe that the administered solution caused (...) his seizures. Without such deception, the test might be useless. (shrink)

Theologians and philosophers of religion are increasingly interested in physics. From the fine-tuning of universal constants to quantum mechanics, relativity, and cosmology, physics is a surprisingly common subject where religion is involved. Bridging the gap between issues in religion and those in physics can be quite difficult, however. Fortunately, the philosophy of science provides a middle ground between the two disciplines. In this book, a philosopher of science provides a critical analysis of the ways in which physics is brought into (...) play in matters of religion. (shrink)

Publication de deux poèmes byzantins du 12ème s. attribués à Théodore Prodomos, qui fournissent un certain nombre de renseignements sur les tentes des camps d'hiver des Comnène, et en particulier sur celle de la maison d'Irène la Sevastokratorissa. Cette étude mène l'auteur à un commentaire historico-artistique des éléments décrits: il compare d'abord ceux-ci avec l'art des 11ème et et 12ème s., et particulièrement avec l'art profane, puis il s'interroge sur l'authenticité des descriptions par rapport aux figures de rhétorique employées dans (...) ces textes. (shrink)

We consider the efficacy of various forms of reinforcement learning with punishment in evolving linguistic conventions in the context of Lewis-Skyrms signalling games. We show that the learning strategy of reinforcement with iterative punishment is highly effective at evolving optimal conventions in even complex signalling games. It is also robust and can be easily extended to a self-tuning variety of reinforcement learning. We briefly discuss some of the virtues of reinforcement with iterative punishment and how it may be related to (...) learning in nature. (shrink)

Despite the relative scarcity of references to Hegel in Strauss’s published work, one can begin to get a sense of how Strauss regarded Hegel. This paper deals with Strauss’s views concerning the Hegelian construal of faith and God. For Strauss, Hegel’s construal of divine personality as subject rather than substance amounts to something like a rejection of the divine personality.

It is often claimed (1) that levels of nature are related by supervenience, and (2) that processes occurring at particular levels of nature should be studied using dynamical systems theory. However, there has been little consideration of how these claims are related. To address the issue, I show how supervenience relations give rise to ‘supervenience functions’, and use these functions to show how dynamical systems at different levels are related to one another. I then use this analysis to describe a (...) graded approach to non-reductive physicalism, and to critically assess Davidson’s arguments for psychological anomaly. I also show how this approach can inform empirical research in cognitive science. (shrink)

The Allegiance of Thomas Hobbes offers a new interpretation of Thomas Hobbes's response to the English Revolution. By focusing on his religious thought, it debunks the standard view of him as a royalist, and recovers his sympathies with the religious projects of the 1640s and 1650s. This reinterpretation culminates with an exploration of Hobbes's surprising sympathies with Oliver Cromwell and his supporters. By placing Thomas Hobbes within fresh contexts, Professor Collins offers a new angle of vision on the religious significance (...) of the English Revolution itself. (shrink)

This chapter talks about “Super Best Friends,” where the kids are seduced by illusionist David Blaine and his growing cult, and Jesus and the Super Best Friends must come to the rescue. It reviews important philosophical questions the episode raises, including miracles and the difference between the natural and supernatural. More generally, the chapter also talks about the nature of religious pluralism—the co‐existence of many different claims to religious authority—and how faith relates to reason in a world of diverse beliefs.

_Explores how the thought of Leo Strauss amounts to a model for thinking about the connection between philosophy, Jewish thought, and history._.

Husserl is well known for his critique of the “mathematizing tendencies” of modern science, and is particularly emphatic that mathematics and phenomenology are distinct and in some sense incompatible. But Husserl himself uses mathematical methods in phenomenology. In the first half of the paper I give a detailed analysis of this tension, showing how those Husserlian doctrines which seem to speak against application of mathematics to phenomenology do not in fact do so. In the second half of the paper I (...) focus on a particular example of Husserl’s “mathematized phenomenology”: his use of concepts from what is today called dynamical systems theory. (shrink)

This paper concerns two composite Lewis-Skyrms signaling games. Each consists in a base game that evolves a language descriptive of nature and a metagame that coevolves a language descriptive of the base game and its evolving language. The first composite game shows how a pragmatic notion of truth might coevolve with a simple descriptive language. The second shows how a pragmatic notion of probability might similarly coevolve. Each of these pragmatic notions is characterized by the particular game and role that (...) it comes to play in the game. (shrink)

Recent developments, both in the cognitive sciences and in world events, bring special emphasis to the study of morality. The cognitive sciences, spanning neurology, psychology, and computational intelligence, offer substantial ad- vances in understanding the origins and purposes of morality. Meanwhile, world events urge the timely synthesis of these insights with traditional ac- counts that can be easily assimilated and practically employed to augment moral judgment, both to solve current problems and to direct future action. The object of the following (...) paper is to present such a synthesis in the form of a model of moral cognition, the ACTWith model of conscience. The purpose of the model is twofold. One, the ACTWith model is intended to shed light on personal moral dispositions, and to provide a tool for actual human moral agents in the refinement of their moral lives. As such, it relies on the power of personal introspection, bolstered by the careful study of moral exemplars available to all persons in all cultures in the form of literary or religious fig- ures, if not in the form of contemporary peers and especially leadership. Two, the ACTWith model is intended as a minimum architecture for fully func- tional artificial morality. As such, it is essentially amodal, implementation non-specific and is developed in the form of an information processing control system. There are given as few hard points in this system as necessary for moral function, and these are themselves taken from review of actual human cognitive processes, thereby intentionally capturing as closely as possible what is expected of moral action and reaction by human beings. Only in satisfying these untutored intuitions should an artificial agent ever be properly regarded as moral, at least in the general population of existing moral agents. Thus, the ACTWith model is intended as a guide both for individual moral develop- ment and for the development of artificial moral agents as future technology permits. (shrink)

The lesson is that while externalists avoid devastating objections to internalist moral realism, they thereby sacrifice most of thepractical significance of moral realism as an alternative to noncognitivism. They defend the objectivity of moral beliefs, but are forced to concede that the practical relevance and appeal of those beliefs depends on subjective desires. It is because they correctly reject internalism that they succumb to the non-cognitivists'tu quoque.

This forward-thinking collection presents new work that looks beyond the division between the analytic and continental philosophical traditions—one that has long caused dissension, mutual distrust, and institutional barriers to the development of common concerns and problems. Rather than rehearsing the causes of the divide, contributors draw upon the problems, methods, and results of both traditions to show what post-divide philosophical work looks like in practice. Ranging from metaphysics and philosophy of mind to political philosophy and ethics, the papers gathered here (...) bring into mutual dialogue a wide range of recent and contemporary thinkers, and confront leading problems common to both traditions, including methodology, ontology, meaning, truth, values, and personhood. Collectively, these essays show that it is already possible to foresee a future for philosophical thought and practice no longer determined neither as "analytic" nor as "continental," but, instead, as a pluralistic synthesis of what is best in both traditions. The new work assembled here shows how the problems, projects, and ambitions of twentieth-century philosophy are already being taken up and productively transformed to produce new insights, questions, and methods for philosophy today. (shrink)

FROST (copy 2): From the John Holmes Library collection.

There is good reason to suppose that our best physical theories are false: In addition to its own internal problems, the standard formulation of quantum mechanics is logically incompatible with special relativity. There is also good reason to suppose that we have no concrete idea concerning what it might mean to claim that these theories are approximately or vaguely true. I will argue that providing a concrete understanding the approximate or vague truth of our current physical theories is not a (...) task for traditional epistemology; rather, this is only possible in the context of ongoing empirical inquiry. [Note #1]. (shrink)

Psychopathy is increasingly in the public eye. However, it is yet to be fully and effectively understood. Within the context of the DSM-IV, for example, it is best regarded as a complex family of disorders. The upside is that this family can be tightly related along common dimensions. Characteristic marks of psychopaths include a lack of guilt and remorse for paradigm case immoral actions, leading to the common conception of psychopathy rooted in affective dysfunctions. An adequate portrait of psychopathy is (...) much more complicated, however. Though some neural regions and corresponding functions are commonly indicated, they range across those responsible for action planning and learning, as well as emotional processes. Accordingly, a complete fine-grained map of all neural mechanisms responsible for psychopathy has not been realized, and even if it were, such a map would have limited utility outside of the context of surgical or chemical intervention. The utility of a neural-level understanding of psychopathy is further limited by the fact that it is only applicable in the clinical identification of individual subjects, and the neuro-chemical/biological correction of those subjects after they are positively identified as psychopaths. On the other hand, an information processing model of moral cognition provides for wider-ranging applications. The theoretical and practical implications for such a feasible working model of psychopathic personalities are assessed. Finally, this chapter raises the possibility of directed modification of social-environmental factors (including at the meta-organizational level) discouraging the development of psychopathic personalities in the first place, modifications which are also open to simulation and testing in terms of the same model of moral cognition. (shrink)

Imaginary worlds are not a consequence of humans' exploratory tendencies as argued in the target article but a recent spinoff of a strong human tendency to create imaginary realities, that is, versions of how the world works that are fabricated (although we believe they are real) in order to allow us to believe we understand it and can control it.

The role of mechanistic evidence tends to be under-appreciated in current evidencebased medicine (EBM), which focusses on clinical studies, tending to restrict attention to randomized controlled studies (RCTs) when they are available. The EBM+ programme seeks to redress this imbalance, by suggesting methods for evaluating mechanistic studies alongside clinical studies. Drug approval is a problematic case for the view that mechanistic evidence should be taken into account, because RCTs are almost always available. Nevertheless, we argue that mechanistic evidence is central (...) to all the key tasks in the drug approval process: in drug discovery and development; assessing pharmaceutical quality; devising dosage regimens; assessing efficacy, harms, external validity, and cost-effectiveness; evaluating adherence; and extending product licences. We recommend that, when preparing for meetings in which any aspect of drug approval is to be discussed, mechanistic evidence should be systematically analysed and presented to the committee members alongside analyses of clinical studies. (shrink)

Collective memory is thought to be something “more” than a conglomeration of personal memories which compose it. Yet, each of us, each individual in every society, remembers from a personal point of view. And if there is memory beyond personal experience through which collective identities are configured, in what “place” might one legitimately situate it? In addressing this question, this article examines the political significance of the distinction between two levels of what are often lumped together under the term of (...) “collective memory”: memories that are retained through the direct experience of groups or associations of a limited size and those that are rarely the object of direct experience constituting the events marking the identities of mass societies. (shrink)