The cerebral cortex is a rich and diverse structure that is the basis of intelligent behavior. One of the deepest mysteries of the function of cortex is that neural processing times are only about one hundred times as fast as the fastest response times for complex behavior. At the very least, this would seem to indicate that the cortex does massive amounts of parallel computation.This paper explores the hypothesis that an important part of the cortex can be modeled as a (...) connectionist computer that is especially suited for parallel problem solving. The connectionist computer uses a special representation, termed value unit encoding, that represents small subsets of parameters in a way that allows parallel access to many different parameter values. This computer can be thought of as computing hierarchies of sensorimotor invariants. The neural substrate can be interpreted as a commitment to data structures and algorithms that compute invariants fast enough to explain the behavioral response times. A detailed consideration of this model has several implications for the underlying anatomy and physiology. (shrink)

Would God's existence be a good thing for us? According to anti-theism, the answer is No. Probably, many theists will want to reject anti-theism. But it isn’t obvious why. After all, whether p is good for us is logically independent from whether p is true. So anti-theism seems entirely compatible with theism. In this essay, however, I argue this seeming compatibility is mistaken. If anti-theism is true, then the theism of most practicing believers is false. And if I am right (...) about this, then anti-theism presents a serious challenge to traditional theistic belief, notably theistic belief anchored in the Bible. (shrink)

Aspects of Law and Legal Systems -- Courts and Legal Reasoning -- Making, Justifying, and Evaluating Law -- Law and Individual Obligation -- Private Law -- Criminal Law -- Sentencing and punishment-- Statutes -- Constitutions -- International Law.

Much of the progress in the fields constituting cognitive science has been based upon the use of explicit information processing models, almost exclusively patterned after conventional serial computers. An extension of these ideas to massively parallel, connectionist models appears to offer a number of advantages. After a preliminary discussion, this paper introduces a general connectionist model and considers how it might be used in cognitive science. Among the issues addressed are: stability and noise‐sensitivity, distributed decision‐making, time and sequence problems, and (...) the representation of complex concepts. (shrink)

The cerebral cortex is a rich and diverse structure that is the basis of intelligent behavior. One of the deepest mysteries of the function of cortex is that neural processing times are only about one hundred times as fast as the fastest response times for complex behavior. At the very least, this would seem to indicate that the cortex does massive amounts of parallel computation.This paper explores the hypothesis that an important part of the cortex can be modeled as a (...) connectionist computer that is especially suited for parallel problem solving. The connectionist computer uses a special representation, termed value unit encoding, that represents small subsets of parameters in a way that allows parallel access to many different parameter values. This computer can be thought of as computing hierarchies of sensorimotor invariants. The neural substrate can be interpreted as a commitment to data structures and algorithms that compute invariants fast enough to explain the behavioral response times. A detailed consideration of this model has several implications for the underlying anatomy and physiology. (shrink)

In response to the charge that deontic ("argent-centered") restrictions are paradoxical, several recent writers suggest that such restrictions find support within T.M. Scanlon's contractualism. I suggest that this claim is only interesting if these restrictions are stronger than those supported by indirect consequentialism. I argue that contractualism cannot support restrictions any stronger than those supported by indirect consequentialism. The contractualists have mislocated the source of the paradox, which arises under any theory that defines right action in patient-focused terms. Consequentialism and (...) contractualism share this feature, so contractualism cannot support stronger deontic restrictions than consequentialism supports. (shrink)

: Biomedical ethicists often assume that common morality constitutes a largely consistent normative system. This premise is not taken for granted in general normative ethics. This paper entertains the possibility of inconsistency within common morality and explores methodological implications. Assuming common morality to be inconsistent casts new light on the debate between principlists and descriptivists. One can view the two approaches as complementary attempts to evade or transcend that inconsistency. If common morality proves to be inconsistent, then principlists might have (...) reason to prefer a less pluralistic theory, thereby moving closer to descriptivism. Descriptivists, by contrast, might want to qualify their claim to accommodate all of people's basic moral convictions. Finally, both camps might wish to adopt a more revisionist posture, accepting that an adequate ethical theory occasionally will contradict some of people's deepest moral convictions. Proper application of the method of reflective equilibrium, to which both descriptivists and principlists claim allegiance, may entail greater openness to revisionism than either camp admits. (shrink)

Introduction -- Practical reasons and judicial use of force -- Deviating from legal standards -- The legal duties of judges -- The normative classification of legal results -- Reasons to deviate -- Adherence rules -- Obeying adherence rules -- The judicial oath -- Legal duty and political obligation -- Systemic effects -- Agent-relative principles -- Optimal adherence rules -- Guidance rules -- Treating like cases alike -- Implementation -- Theoretical implications -- Conclusion.

Retributive restrictions are principles of justice according to which what a criminal deserves on account of his individual conduct and character restricts how states are morally permitted to treat him. The main arguments offered in defense of retributive restrictions involve thought experiments in which the state punishes the innocent, a practice known as telishment. In order to derive retributive restrictions from the wrongness of telishment, one must engage in moral argument from generalization. I show how generalization arguments of the same (...) form can be used subversively to derive morally unacceptable conclusions from other scenarios in which the state intentionally inflicts undeserved coercion. For example, our considered moral convictions approve of punishment policies that inflict collateral damage, such as the ubiquitous policy of excluding the family members of inmates from prison facilities outside visiting hours. I present a generalization argument for the conclusion that these policies are seriously unjust. If we firmly believe that these policies are not unjust, then we should put less stock in generalization arguments. We should not use them to support retributive restrictions. This conclusion has broad implications for the theory and practice of criminal justice. (shrink)

Paul Ricoeur was one of the foremost interpreters and translators of Edmund Husserl's philosophy. These nine essays present Ricoeur's interpretation of the most important of Husserl's writings, with emphasis on his philosophy of consciousness rather than his work in logic. In Ricoeur's philosophy, phenomenology and existentialism came of age and these essays provide an introduction to the Husserlian elements which most heavily influenced his own philosophical position.

We examined the links between moral identity—the centrality of moral principles to identity—and political purpose during emerging adulthood. We analyzed data from two waves of a longitudinal study of civic purpose. T1 surveys were collected before high school graduation and T2 survey were collected two years later. We categorized people (N = 1,578 at T1 and N = 480 at T2) into political purpose groups based on the person-centered perspective and then performed multinomial logistic regression analysis to test whether moral (...) identity was associated with categories of political purpose. The findings from our study indicate that moral identity at T1 is linked with the maintenance and formation of T2 political purpose. (shrink)

Legal theorists in this century have often perceived a need for a theory capable of occupying a stable middle ground between natural law theory and nineteenth-century legal positivism. The prolific German-American legal philosopher, Hans Kelsen, was perhaps not the first to feel the need for such a theory, but he was certainly among the first to attempt to construct one. n1 Although Kelsen's own efforts failed, in many ways they defined the ambitions of twentieth-century legal theory and inspired others to (...) take up the challenge. In order to understand the nature of the challenge, which confronts us still today, it is helpful to examine central difficulties with Kelsen's own Pure Theory of Law. (shrink)

Principle monists believe that our moral duties, such as fidelity and non-maleficence, can be justified in terms of one basic moral principle. Principle pluralists disagree, some suggesting that only an excessive taste for simplicity or a desire to mimic natural science could lead one to endorse monism. In Ideal Code, Real World (Oxford, 2000), Brad Hooker defends a monist theory, employing the method of reflective equilibrium to unify the moral duties under a version of rule consequentialism. Hooker's arguments have drawn (...) powerful criticisms from pluralists such as Alan Thomas, Phillip Montague and Philip Stratton-Lake. Against these critics, I argue that Hooker's monism enjoys certain practical advantages associated with the simplicity of a single basic principle. These advantages are often overlooked because they appear primarily in cases of second-order deliberation, in which one must decide whether our basic moral duties support a certain derivative duty. I argue that these advantages of monism over pluralism are analogous to the advantages that generalists claim over moral particularism. Because pluralists are generalists, I conclude that they are in an awkward dialectical position to dismiss Hooker's monism for the reasons they usually offer. (shrink)

This paper addresses several questions related to the nature, production, and use of animal-human (a-h) chimeras. At the heart of the issue is whether certain types of a-h chimeras should be brought into existence, and, if they are, how we should treat such creatures. In our current research environment, we recognize a dichotomy between research involving nonhuman animal subjects and research involving human subjects, and the classification of a research protocol into one of these categories will trigger different ethical standards (...) as to the moral permissibility of the research in question. Are a-h chimeras entitled to the more restrictive and protective ethical standards applied to human research subjects? We elucidate an Aristotelian-Thomistic metaphysical framework in which to argue how such chimeras ought to be defined ontologically. We then examine when the creation of, and experimentation upon, certain types of a-h chimeras may be morally permissible. (shrink)

To describe phenomena that occur at different time scales, computational models of the brain must incorporate different levels of abstraction. At time scales of approximately 1/3 of a second, orienting movements of the body play a crucial role in cognition and form a useful computational level embodiment level,” the constraints of the physical system determine the nature of cognitive operations. The key synergy is that at time scales of about 1/3 of a second, the natural sequentiality of body movements can (...) be matched to the natural computational economies of sequential decision systems through a system of implicit reference called deictic in which pointing movements are used to bind objects in the world to cognitive programs. This target article focuses on how deictic bindings make it possible to perform natural tasks. Deictic computation provides a mechanism for representing the essential features that link external sensory data with internal cognitive programs and motor actions. One of the central features of cognition, working memory, can be related to moment-by-moment dispositions of body features such as eye movements and hand movements. (shrink)

Animate vision systems have gaze control mechanisms that can actively position the camera coordinate system in response to physical stimuli. Compared to passive systems, animate systems show that visual computation can be vastly less expensive when considered in the larger context of behavior. The most important visual behavior is the ability to control the direction of gaze. This allows the use of very low resolution imaging that has a high virtual resolution. Using such a system in a controlled way provides (...) additional constraints that dramatically simplify the computations of early vision. Another important behavior is the way the environment “behaves‘. Animate systems under real-time constraints can further reduce their computational burden by using environmental cues that are perspicuous in the local context. A third source of economy is introduced when behaviors are learned. Because errors are rarely fatal, systems using learning algorithms can amortize computational cost over extended periods. Further economies can be achieved when the learning system uses indexical reference, which is a form of dynamic variable binding. Animate vision is a natural way of implementing this dynamic binding. (shrink)

Paul Ricoeur was one of the foremost interpreters and translators of Edmund Husserl's philosophy. These nine essays present Ricoeur's interpretation of the most important of Husserl's writings, with emphasis on his philosophy of consciousness rather than his work in logic. In Ricoeur's philosophy, phenomenology and existentialism came of age and these essays provide an introduction to the Husserlian elements which most heavily influenced his own philosophical position.

Many philosophers of emotion, whether perceptual or cognitive theorists, have claimed that emotions represent evaluative properties. This is often supported by an appeal to the fittingness of emotion: that emotions can be fitting shows they represent evaluative properties. In this paper, however, I argue that this inference is much too fast. In fact, no aspect of the rational assessment of emotion directly supports the claim that emotions represent evaluative properties. This inference can, however, be matured into an inference to the (...) best explanation. But this requires coming to terms with a significant emerging rival, the attitudinal theory of emotion. In this paper, I show how this can be accomplished and the inference from fittingness to content saved. (shrink)

Our computational studies of infant language learning estimate the inherent difficulty of Arbib's proposal. We show that body language provides a strikingly helpful scaffold for learning language that may be necessary but not sufficient, given the absence of sophisticated language in other species. The extraordinary language abilities of Homo sapiens must have evolved from other pressures, such as sexual selection.

Ugandan smallholder farmers need to feed a growing population, but their efforts are hampered by declining soil fertility rates. Agricultural extension can facilitate farmers’ access to new practices and technologies, yet farmers are understandably often hesitant to adopt new behaviors. New knowledge assimilation is an important component of behavior change that is often overlooked or poorly addressed by current extension efforts. We implemented a Fertility Management Education Program in central Uganda to investigate smallholder farmers’ existing soil knowledge and their assimilation (...) of new scientific concepts into their knowledge framework. Qualitative data were collected through participant observation, farmer interviews, and focus groups, and coded for using a priori and emergent themes. Our exploration revealed some notable similarities between farmers’ soil knowledge and scientific concepts, particularly in regards to soil health concepts, a discovery that could facilitate communication between extension agents and farmers. However, certain scientific concepts are either unknown to farmers or discordant with existing soil knowledge; these concepts are unlikely to be assimilated by farmers without convincing and concerted extension efforts. Importantly, we found that the combination of new scientific knowledge and hands-on experimentation with novel practices gave farmers far greater confidence in implementing improved soil management practices. Our study provides evidence that extension programs should engage directly with farmers’ existing soil knowledge to develop their understanding of key biological concepts and confidence in implementing improved practices. (shrink)

Some philosophers claim that emotions are, at best, hindrances to the discovery of evaluative truths, while others omit them entirely from their epistemology of value. I argue, however, that this is a mistake. Drawing an evaluative parallel with Frank Jackson’s Mary case, I show there is a distinctive way in which emotions epistemically enhance evaluative judgment. This is, in fact, a conclusion philosophers of emotion have been eager to endorse. However, after considering several influential proposals—such as the view that emotions (...) generate evaluative concepts, or the view that emotions justify evaluative beliefs on the model of perception—I conclude that the most promising contender is the notion that emotional experience acquaints us with evaluative properties. (shrink)

This best-selling anthology of readings with case studies provides insightful and comprehensive treatment of ethical issues in medicine. Appropriate for courses taught in philosophy departments, bioethics programs, as well as schools of medicine and nursing, the collection covers such provocative topics as biomedical enhancement, clinical trials in developing countries, animal research, physician-assisted suicide, and health care reform. The text's effective pedagogical features include chapter introductions, argument sketches, explanations of medical terms, headnotes, and annotated bibliographies.