This paper considers the ontological implications of encountering varying levels of intelligibility when one traverses social structures, such as when one immigrates to a new culture or works in a place with people of a different economic class than one’s own. This paper terms this phenomenon “world-travelling,” which the paper understands as the shift in self-experience that occurs when an oppressed person moves from an environment where she is readily perceived as an active subject to one where she is perceived as a passive instrument of others’ wills and desires. Such a situation opens on an ontological paradox because it seems that the same person is capable of possessing two contradictory attributes at the same time. The chapter explains how this paradoxical situation could obtain by arguing that attributes of consciousness are world-dependent. It concludes that the self is actually “a plurality of selves” and that the structure of subjectivity is neither unitary, universal, nor ahistorical.
An ecumenical notion of entailment
Much has been said about intuitionistic and classical logical systems since Gentzen’s seminal work. Recently, Prawitz and others have been discussing how to put together Gentzen’s systems for classical and intuitionistic logic in a single unified system. We call Prawitz’ proposal the Ecumenical System, following the terminology introduced by Pereira and Rodriguez. In this work we present an Ecumenical sequent calculus, as opposed to the original natural deduction version, and state some proof theoretical properties of the system. We reason that sequent calculi are more amenable to extensive investigation using the tools of proof theory, such as cut-elimination and rule invertibility, hence allowing a full analysis of the notion of Ecumenical entailment. We then present some extensions of the Ecumenical sequent system and show that interesting systems arise when restricting such calculi to specific fragments. This approach of a unified system enabling both classical and intuitionistic features sheds some light not only on the logics themselves, but also on their semantical interpretations as well as on the proof theoretical properties that can arise from combining logical systems.
Logical reasoning: a first course
| This book describes how logical reasoning works and puts it to the test in applications. It is self-contained and presupposes no more than elementary competence in mathematics. |
Making Sense of Sense-Making: Reflections on Enactive and Extended Mind Theories
This paper explores some of the differences between the enactive approach in cognitive science and the extended mind thesis. We review the key enactive concepts of autonomy and sense-making. We then focus on the following issues: (1) the debate between internalism and externalism about cognitive processes; (2) the relation between cognition and emotion; (3) the status of the body; and (4) the difference between ‘incorporation’ and mere ‘extension’ in the body-mind-environment relation.
Cognitive disability and embodied, extended minds
Many models of cognitive ability and disability rely on the idea of cognition as abstract reasoning processes implemented in the brain. Research in cognitive science, however, emphasizes the way that our cognitive skills are embodied in our more basic capacities for sensing and moving, and the way that tools in the external environment can extend the cognitive abilities of our brains. This chapter addresses the implications of research in embodied cognition and extended cognition for how we think about cognitive impairment and rehabilitation, how cognitive reserve mitigates neural impairment, and the distinction between medical and social models of disability.
Situated cognition
This chapter provides a structured overview of work on situated cognition. The main fields in which situated cognition is studied – cognitive science, feminist epistemology, and science studies – are unnecessarily isolated from one another. Cognition is always situated. It is always concretely instantiated in one way or another. There are no disembodied cognitive achievements. The situated cognition literature details the ways in which cognition can be instantiated and, instead of abstracting what is in common to all cognition, explores the epistemic significance of particular routes to cognitive accomplishment. The phenomena of situated cognition have been described in several disciplines. Cognitive scientists have described the ways in which representation of the world, learning, memory, planning, action, and linguistic meaning are embedded in the environment, tools, social arrangements, and configurations of the human body. The situated cognition approaches have in common the rejection of the ideas that cognition is individualistic, general, abstract, symbolic, explicit, language based, and located in the brain as mediator between sensory input and action output.
The Boundaries of the Mind
The subject of mental processes or mental states is usually assumed to be an individual, and hence the boundaries of mental features – in a strict or metaphorical sense – are naturally regarded as reaching no further than the boundaries of the individual. This chapter addresses various philosophical developments in the 20th and 21st century that questioned this natural assumption. I will frame this discussion by first presenting a historically influential commitment to the individualistic nature of the mental in Descartes’ theory. I identify various elements in the Cartesian conception of the mind that were subsequently criticized and rejected by various externalist theories, advocates of the extended mind hypothesis and defenders of embodied cognition. Then I will indicate the main trends in these critiques.
Explanation and The Right to Explanation
In response to widespread use of automated decision-making technology, some have considered a right to explanation. In this paper I draw on insights from philosophical work on explanation to present a series of challenges to this idea, showing that the normative motivations for access to such explanations ask for something difficult, if not impossible, to extract from automated systems. I consider an alternative, outcomes-focused approach to the normative evaluation of automated decision-making, and recommend it as a way to pursue the goods originally associated with explainability.
Sex as a Pedagogical Failure
In the early 1980s, U.S. universities began regulating sexual relationships between professors and students. Such regulations are routinely justified by a rationale drawn from sexual-harassment law in the employment context: the power differential between professor and student precludes the possibility of genuine consent on the student’s part. This rationale is problematic, as feminists in the 1980s first observed, for its protectionist and infantilizing attitude toward (generally) women students. But it is also problematic in that it fails to register what is truly ethically troubling about consensual professor-student sex. A professor’s having sex with his student constitutes a pedagogical failure: that is, a failure to satisfy the duties that arise from the practice of teaching. What is more, much consensual professor-student sex constitutes a patriarchal failure: such relationships often feed on, and reinforce, women’s second-class standing in higher education. As such, these relationships can thwart the legal right of women students, under Title IX, to exist in the university on equal terms with their male counterparts. Whether or not we should ultimately favor such an interpretation of Title IX—whether or not, that is, it would render campuses ultimately more equal for women and other marginalized people—it is clear that university professors need to attend more carefully to the sexual ethics of their own practice.
Ethical Necessities
In this paper I introduce my work in ethics, inviting others to draw on my approach to address the ethical issues that concern them. I set up the Centre for Ethical Philosophy at Durham University in 2007 to plug a puzzling gap in philosophical work to help us help the world. In 1. I set out ethical philosophy. In 2. I consider some implications, for example, that to do good we must pay much more attention to the beings around us, less to ourselves. In 3. I consider the implications for how we should think about war and peace. In 4. I draw out some implications for good political practice. In 5. I consider objections and conclude.