Within recent feminist philosophy, controversy has developed over the desirability, and indeed, the possibility of defining the central terms of its analysis—“woman,” “femininity,” etc. The controversy results largely from the undertheorization of the notion of definition; feminists have uncritically adopted an Aristotelian treatment of definition as entailing metaphysical, rather than merely linguistic, commitments. A “discursive” approach to definition, by contrast, allows us to define our terms, while avoiding the dangers of essentialism and universalism.

This essay examines the concept of leadership as it is commonly understood within the field of leadership studies today. The inquiry is framed by an analysis of three generally accepted definitions of leadership. I look at the selected definitions from four angles, which I call the four dimensions of leadership: the behavioral (what the leader does, or ought to do, that makes it leadership), the asymmetrical (in what sense a leader is different from the others in the group), the social (...) (what it is that the leader is leading), and the teleological (what the direction is). By doing this, I find that these definitions can be problematic, if instructively so. I identify two underlying concerns. The first problem is the tendency to fuse informal and formal leadership into a single concept. I argue that informal and formal leadership can be more helpfully understood, rather, as two separate, if sometimes overlapping, concepts, each needing its own definition and analysis. This is because formal leadership is a functional concept, while informal leadership is not; this entails not only that each type of leader is leading a different type of entity, but also that each is judged by different standards. The second problem is, paradoxically, a bias against leadership. To put this less polemically: scholars who recognize that organizational success can be hindered by excessive emphasis upon hierarchy, and who thus study the dynamics of egalitarian collaboration, can inadvertently generate confusion by allowing the honorific of “leadership” to be applied also to that work. So, I propose definitions of the two key concepts, formal and informal leadership, with the suggestion that this provides a helpful method of sorting leadership scholarship into three categories: formal leadership; informal leadership; and egalitarianism. (shrink)

Mathematics textbooks teach logical reasoning by example, a practice started by Euclid; while logic textbooks treat logic as a subject in its own right without practical application to mathematics. Stuck in the middle are students seeking mathematical proficiency and educators seeking to provide it. To assist them, the article explains in practical detail how to teach logic-based skills such as: making mathematical reasoning fully explicit; moving from step to step in a mathematical proof in logically correct ways; and checking to (...) make sure inferences are logically correct. The methodology can easily be extended beyond the four examples analyzed. (shrink)

Analytic induction (AI) is an interpretation of scientific method that emerged in early twentieth-century sociology and still has some influence today. Among the studies often cited as examples are Becker’s articles on marijuana use. While these have been given less attention than the work of Lindesmith on opiate addiction and Cressey on financial trust violation, Becker’s work has distinctive features. Furthermore, it raises some important and interesting issues that relate not only to AI but to social scientific explanation more generally. (...) These concern, for example, the presence and nature of causal systems in the social world, the relationship between historical and generalizing approaches, the character and role of social scientific theories, and how they are generated. In this article Becker’s research is examined in detail, and these issues explored through comparisons with the work of Lindesmith and Cressey. (shrink)

The search for definitions is ubiquitous in Sanskrit philosophy. In many texts across traditions, we find philosophers presenting their theories by laying down definitions of key theoretical categories, by testing those definitions, and by refuting competing definitions of the same theoretical categories. Call this the method of definitions. The aim of this essay is to explore a challenge that arises for this method: the paradox of definitions. It arises from the claim that the method of definitions is either (i) redundant (...) because it does not provide us any knowledge that we did not already possess, or (ii) impossible to successfully pursue because it leads to an infinite regress. Neither of these alternatives should be acceptable to the defender of this method. To focus our discussion, I will show how this challenge arose for—and was arguably resolved by—early Nyāya-Vaiśeṣika thinkers active in the first millennium CE and at the very beginning of the second millennium. In response to the paradox of definitions, these Nyāya-Vaiśeṣika thinkers claimed that the purpose of a definition is to remove either metaphysical ignorance about the distinction between theoretically significant kinds or kind-membership, or metalinguistic ignorance about the meaning or the application-conditions of theoretically significant terms. I will show how this discussion helps us to ward off certain misconceptions about the method of definitions in Nyāya-Vaiśeṣika. (shrink)

In this paper, I want to make two main points. The first point is methodological: Instead of attempting to give a classical analysis or reductive definition of the term “expertise”, we should attempt an explication and look for what may be called symptoms of expertise. What this comes to will be explained in due course. My second point is substantial: I want to recommend understanding as an important symptom of expertise. In order to give this suggestion content, I begin to (...) develop an account of understanding. Finally, I will draw attention to some consequences of this approach. (shrink)

For more than fifty years, taxonomists have proposed numerous alternative definitions of species while they searched for a unique, comprehensive, and persuasive definition. This monograph shows that these efforts have been unnecessary, and indeed have provably been a pursuit of a will o’ the wisp because they have failed to recognize the theoretical impossibility of what they seek to accomplish. A clear and rigorous understanding of the logic underlying species definition leads both to a recognition of the inescapable ambiguity that (...) affects the definition of species, and to a framework-relative approach to species definition that is logically compelling, i.e., cannot not be accepted without inconsistency. An appendix reflects upon the conclusions reached, applying them in an intellectually whimsical taxonomic thought experiment that conjectures the possibility of an emerging new human species. (shrink)

Advances in machine learning and the development of very large knowledge graphs have accompanied a proliferation of ontologies of many types and for many purposes. These ontologies are commonly developed independently, and as a result, it can be difficult to communicate about and between them. To address this difficulty of communication, ontologies and the communities they serve must agree on how their respective terminologies and formalizations relate to each other. The process of coming into accord and agreement is called “harmonization.” (...) The Ontology Summit 2021 examined the overall landscape of ontologies, the many kinds of ontology generation and harmonization, as well as the sustainability of ontologies. The Communiqué synthesizes and summarizes the findings of the summit as well as earlier summits on related issues. One of the major impediments to harmonization is the relatively poor quality of natural language definitions in many ontologies. The summit surveyed the state of the art in natural language definition development, based on lexicographic principles, as well as examples of ongoing projects that are explicitly dealing with harmonization and sustainability. (shrink)

If we [women] have not stopped rape, we have redefined it, we have faced it, and we have set up the structures to deal with it for ourselves.[T]he definition of rape, which has in the past always been understood to mean the use of violence or the threat of it to force sex upon an unwilling woman, is now being broadened to include a whole range of sexual relations that have never before in all of human experience been regarded as (...) rape.In 1989 the philosopher and self-described feminist Christina Sommers published a short essay — ‘an opinion piece,’ she called it — that was eventually developed into and published as a philosophical article. In this essay Sommers criticized ‘feminist philosophers’ for being ‘oddly unsympathetic to the women whom they claim to represent.’ Specifically, Sommers accused these philosophers of ignoring the ‘values of the average woman’ and of being caught up in an ‘ideological fervor.’ To emphasize her point that the so-called feminist philosophers have lost touch with ‘the average woman,’ Sommers wrote that ‘One must nevertheless expect that many women will continue to swoon at the sight of Rhett Butler carrying Scarlett O'Hara up the stairs to a fate undreamt of in feminist philosophy.’. (shrink)

Hayek's argument that social justice is a mirage consists of six claims: that the very idea of social justice is meaningless, religious, self‐contradictory, and ideological; that realizing any degree of social justice is unfeasible; and that aiming to do so must destroy all liberty. These claims are examined in the light of contemporary theories and debates concerning social justice in order to assess whether the argument's persuasive power is due to sound reasoning, and to what extent contemporary theories of justice (...) meet or escape the Hayekian challenge. (shrink)

This paper has two objectives, neither previously attempted in the published literature—first, to outline J. M. Keynes's theory of knowledge in some detail, and, secondly, to justify the contention that his epistemology is a variety of rationalism, and not, as many have asserted, a form of empiricism. Keynes's attitude to empirical data is also analysed as well as his views on prediction and theory choice. 1This paper is partly based on ideas initially advanced in O'Donnell [1982], a revised and expanded (...) version of which is to be published as O'Donnell [1989]. I should like to thank an anonymous referee for helpful comment, and King's College, Cambridge for permission to quote from the Keynes Papers. (shrink)

This paper will examine a claim that nursing is united by its moral stance. The claim is that there are moral constraints on nurses' actions as people practising nursing and that they are in some way different from both what for now can be called standard morality and also different from the person's own moral views who also happens to be a nurse, hence the defining and unifying factor for nursing. I will begin by situating the claim within the broader (...) area about the need for a definition to state features that are essential to all and only members of its class. This will highlight the fact that there are two distinct types of definition used by authors seeking to find a unity for nursing. One type of definition has to do with goals or purposes given to nursing and the other with ends discovered as nursing. But even if there are ends waiting to be discovered a particular practical concern is how we can have knowledge of them. I will suggest that knowledge by intuition is plausible but that as things currently stand in moral epistemology it will not provide the unifying ground for nursing. Then I will argue that in the latter approach to definition a certain account of human nature has been advanced in order to provide features that are there to be discovered and so not dependent on human beings for the definition or classification. However, such an attempt to define nursing cannot do what is wanted. Rather than the account of human nature grounding morality and doing so for nursing, the account of human nature itself relies upon a prior account of morality. Because of this it loses its supposed ground of unity for the profession. Nursing is not united by its moral stance especially if this is understood in a strong sense as unique moral stance, but as things currently stand in moral epistemology this is not necessarily a bad thing for practitioners or patients. (shrink)

Classifying domain entities into their respective top-level ontology concepts is a complex problem that typically demands manual analysis and deep expertise in the domain of interest and ontology engineering. Using an efficient approach to classify domain entities enhances data integration, interoperability, and the semantic clarity of ontologies, which are crucial for structured knowledge representation and modeling. Based on this, our main motivation is to help an ontology engineer with an automated approach to classify domain entities into top-level ontology concepts using (...) informal definitions of these domain entities during the ontology development process. In this context, we hypothesize that the informal definitions encapsulate semantic information crucial for associating domain entities with specific top-level ontology concepts. Our approach leverages state-of-the-art language models to explore our hypothesis across multiple languages and informal definitions from different knowledge resources. In order to evaluate our proposal, we extracted multi-label datasets from the alignment of the OntoWordNet ontology and the BabelNet semantic network, covering the entire structure of the Dolce-Lite-Plus top-level ontology from most generic to most specific concepts. These datasets contain several different textual representation approaches of domain entities, including terms, example sentences, and informal definitions. Our experiments conducted 3 study cases, investigating the effectiveness of our proposal across different textual representation approaches, languages, and knowledge resources. We demonstrate that the best results are achieved using a classification pipeline with a K-Nearest Neighbor (KNN) method to classify the embedding representation of informal definitions from the Mistral large language model. The findings underscore the potential of informal definitions in reflecting top-level ontology concepts and point towards developing automated tools that could significantly aid ontology engineers during the ontology development process. (shrink)

In his new book, The Force of Law, Frederick Schauer maintains that law has no necessary properties, and that therefore jurisprudents should not assume that an inquiry into the nature of law has to be a search for such properties. I argue, however, that Schauer's attempt to show that legal anti-essentialism is a defensible position fails, because his one main argument is either irrelevant or else incomplete, depending on how one understands it, and because the other main argument is false.

The use of ambiguous expressions in argumentative dialogues can lead to misunderstanding and equivocation. Such ambiguities are here called active ambiguities . However, even a normative model of persuasion dialogue ought not to ban active ambiguities altogether, one reason being that it is not always possible to determine beforehand which expressions will prove to be actively ambiguous. Thus, it is proposed that argumentative norms should enable each participant to put forward ambiguity criticisms as well as self-critical ambiguity corrections, inducing them (...) to improve their language if necessary. In order to discourage them from nitpicking and from arriving at excessively high levels of precision, the parties are also provided with devices with which to examine whether the ambiguity corrections or ambiguity criticisms have been appropriate. A formal dialectical system is proposed, in the Hamblin style, that satisfies these and some other philosophical desiderata. (shrink)

A theory of definitions which places the eliminability and conservativeness requirements on definitions is usually called the standard theory. We examine a persistent myth which credits this theory to Leśniewski, a Polish logician. After a brief survey of its origins, we show that the myth is highly dubious. First, no place in Leśniewski's published or unpublished work is known where the standard conditions are discussed. Second, Leśniewski's own logical theories allow for creative definitions. Third, Leśniewski's celebrated ‘rules of definition’ lay (...) merely syntactical restrictions on the form of definitions: they do not provide definitions with such meta-theoretical requirements as eliminability or conservativeness. On the positive side, we point out that among the Polish logicians, in the 1920s and 1930s, a study of these meta-theoretical conditions is more readily found in the works of Łukasiewicz and Ajdukiewicz. (shrink)

I endeavour in this article to present Ibn Taymiyya's theory of nominal definition as an alternative to logical definition. Ibn Taymiyya argues that nominal definition is based on concrete principles that are subject to experiment. Furthermore, the function of definition is akin to the 'name' because it aims at distinguishing any one object from others but not at reaching the entity of things. Nominal definition aims to define the name or the named, and this aim can be achieved by translation (...) or by interpretation. Translation is the movement from one name to another or from one named object to another. Interpretation is movement from a name to a named object or from a named object to a name. (shrink)