In “The Uses of Argument” Toulmin introduces a number of concepts that have become popular in argumentation theory, such as data, claim, warrant, backing, force, field, and, most fundamentally, the concept of a “logical type”. Toulmin never defines the concept of a logical type or a field very clearly, and different interpretations can be found in the literature, either reconstructing what Toulmin has in mind, or revising his concepts to suit other concerns. A natural history of these concepts is not (...) my concern. I will analyse logical types according to what Toulmin uses this concept for, namely to raise a problem with deductive logic and motivate its replacement with the Toulmin model. I will argue that a logical type and the distinction he draws between different logical types resembles distinctions made in logical positivism between the directly and the indirectly verifiable, and the problem raised is, in essence, the positivist’s problem of how indirect propositions can be justified on the basis of direct propositions. I will show that Toulmin makes a straw man of the positivists’ own solution to the problem and hence does not prove there to be an adequate motivation for replacing deductive logic with the Toulmin model. (shrink)

The proper range and content of the unconscious in the human sciences should be established by reference to its conceptual relationship to the folk psychology that informs the standard form of explanation therein. A study of this relationship shows that human scientists should appeal to the unconscious only when the language of the conscious fails them, i.e. typically when they find a conflict between people's self-understanding and their actions. This study also shows that human scientists should adopt a broader concept (...) of the unconscious than the one developed by Freud, that is, one free from his ahistorical concept of the instincts and his ahistorical emphasis on the sexual experiences of childhood. The unconscious, understood in this way, has an ambiguous relationship to more recent linguistic and narrativist strands of psychoanalysis. (shrink)

Language was central to Hobbes's understanding of human beings and their mental abilities, and criticism of other philosophers' uses of language became a favorite critical tool for him. This paper connects Hobbes's theories about language to his criticisms of others' language, examining Hobbes's theories of propositions and truth, and how they relate to his claims that various sorts of proposition are absurd. It considers whether Hobbes in fact means anything more by 'absurd' than 'false'. And it pays particular attention to (...) Hobbes's categorization of causes of absurdity and of types of incoherent proposition, arguing that Hobbes's approach is only loosely related to later discussions of category mistakes. (shrink)

Leśniewski is known for his pedantry and idiosyncratic notation, which make it extremely difficult to read and follow. As reading comes before understanding, this paper therefore attempts only one...

Although a considerable degree of precision has been introduced both into the formulation and the discussion of ontological theories by the use of formal methods there is still a remarkable indefiniteness about foundational issues. In particular it is not clear what an ontological category is and why we regard something as an ontological category. This is amazing given that the notion of ontological category is in fact the most basic of the whole of ontology: it is what this discipline is (...) about. (shrink)

This article considers the significance of Kant’s schematized categories in the Critique of Pure Reason for contemporary metaphysics. I present Kant’s understanding of the schematism and how it functions within his critique of the limits of pure reason. Then I argue that, although the true role of the schemata is a relatively late development in Kant’s thought, it is nevertheless a core notion, and the central task of the first Critique can be sufficiently articulated in the language of the schematism. (...) A surprising result of Kant’s doctrine of the schematism is that a limited form of metaphysics is possible even within the parameters set out in the first Critique. To show this, I offer contrasting examples of legitimate and illegitimate forays into metaphysics in light of the condition of the schematized categories. (shrink)

Category mistakes are sentences such as ‘Colourless green ideas sleep furiously’ or ‘The theory of relativity is eating breakfast’. Such sentences are highly anomalous, and this has led a large number of linguists and philosophers to conclude that they are meaningless (call this ‘the meaninglessness view’). In this paper I argue that the meaninglessness view is incorrect and category mistakes are meaningful. I provide four arguments against the meaninglessness view: in Sect. 2, an argument concerning compositionality with respect to category (...) mistakes; in Sect. 3 an argument concerning synonymy facts of category mistakes; in Sect. 4 concerning embeddings of category mistakes in propositional attitude ascriptions; and in Sect. 5 concerning the uses of category mistakes in metaphors. Having presented these arguments, in Sect. 6 I briefly discuss some of the positive motivations for accepting the meaninglessness view and argue that they are unconvincing. I conclude that the meaninglessness view ought to be rejected. (shrink)

Lecture notes from Husserl's logic lectures published during the last 20 years offer a much better insight into his doctrine of the forms of meaning than does the fourth Logical Investigation or any other work published during Husserl's lifetime. This paper provides a detailed reconstruction, based on all the sources now available, of Husserl's system of logical grammar. After having explained the notion of meaning that Husserl assumes in his later logic lectures as well as the notion of form of (...) meaning as it features in ‘doctrine of the forms of meaning’, I present a system of rules that describes all the various forms of meaning that Husserl singles out in his lectures. (shrink)

The aim of this paper is to show that Karl Marx’s critique of political economy can be interpreted as a critique of what philosophers have termed “category-mistakes”. Therefore, I first turn to the origins of this term in Gilbert Ryle’s “Categories”, to further developments in “Philosophical Arguments” and in P. F. Strawson, as well as to W. H. Walsh’s approach to categories, to establish a workable meaning of the term “category-mistake”. In the second part, I briefly discuss some of the (...) previous uses of this term in exegeses of Marx. Based on Marx’s writings and D. Sayer’s work on Marx’s methodology, I then explicate the meaning of Marx’s term “economic category”. Finally, I arrive at an interpretation of Marx’s critique of economic theories as an analysis concerned with the improper use of theoretical concepts. By way of conclusion, I offer some general remarks on one important aspect of critique in Marx and in social science in general. (shrink)

The claim that metaphysics is fundamental has frequently been voiced in the history of the discipline. However, the usual ways in which this claim is justified do not appear to be effective. This article aims to fill this gap in meta-metaphysical theory by providing a credible justification of the fundamentality of metaphysics in two steps. The first consists in establishing a set of five conditions of fundamentality for the discipline. The second consists in showing that these conditions are satisfied when (...) the object of study of metaphysics is identified with an ontologically neutral object, namely categories, and the task of the discipline is taken to be the determination of the number and identity of the most general categories and the relation of less general categories to the most general ones. (shrink)