Two substantive comments are made. The first is methodological, and concerns Heyes's proposals for a critical test for theory of mind. The second is theoretical, and concerns the appropriateness of asking questions about theory of mind in nonhuman primates. Although Heyes warns against the apparent simplicity of the theory of mind hypothesis, she underplays the linguistic implications.

This paper attempts a critical examination of the thesis that an apprenticeship to a Lancaster druggist was, for Edward Frankland, a wholly inappropriate preparation for a career in chemistry. This view, which stems directly from Frankland himself, is defective in several ways. It fails to take into account certain benefits which he accepted as valuable; it implies an exceptional degree of ‘negligence’ which was in fact quite typical; it ignores certain positive indicators of the value of such experience; and it (...) involves questionable value-judgments on the behaviour of one individual, the druggist Stephen Ross. Although Frankland's perspective may be no longer acceptable, the reasons for its inadequacy are perhaps the most important aspect of the whole affair. Their identification raises questions of historiography of wider significance, while the whole episode underlines certain issues in scientific training that were to become crucial in the growth of Victorian chemistry in Britain. (shrink)

Russell takes his paper ?On denoting? to have achieved the repudiation of the theory of denoting concepts and Frege?s theory of sense, and the invention of the notion of incomplete symbols.This means that Russell attempts to solve the set theoretic and semantic paradoxes without making use of a theory of sense.Instead, his strategy is to revise his logical ontology by arguing that certain symbols should be treated as incomplete.In constructing such arguments Russell, at various points, makes use (...) of epistemological and metaphysical considerations.These arguments do not form themselves into a systemic set of considerations to be used in appraising a logical system.Finally, the vicious circle principle is argued for on the basis of considerations, which are presumed evident, about the nature of propositional functions.The stringency of this principle is a basic problem for the system of Principia mathematica.However, even given the terms of the argument, ?On denoting? does not offer a complete repudiation of the notion of sense.This allows the possibility of retaining some of the insights of Principia mathematica whilst rejecting the stringency of the vicious circle principle.The basis of such a system is the theory of sense. (shrink)

In 'On the nature of truth and falsehood' Russell offers both a multiple relation theory of judgment and a correspondence theory of truth. It has been a prevailing understanding of the Tractatus that Wittgenstein rejects Russell’s multiple relation idea but endorses the correspondence theory. Ramsey took the opposite view. In his 'Facts and Propositions', Ramsey endorses Russell’s multiple relation idea, rejects the correspondence theory, and then asserts that these moves are both due to Wittgenstein. This chapter will (...) argue that Ramsey’s ascriptions are both correct. The extent of the agreement between Ramsey and Wittgenstein will be argued, moreover, to count definitively against standard understandings of Ramsey as a redundancy theorist of truth. Wittgenstein is no correspondence theorist and Ramsey is no redundancy theorist; rather, both philosophers offer identity theories of truth. (shrink)

Wittgenstein held that Russell’s multiple relation theory of judgment fails to explain an atomic judgment’s representation of entities as combined. He demonstrated this failure as follows. Under the multiple relation theory, an atomic judgment is a complex whose relating relation is judgment, the universal, and whose terms include the entities the judgment represents as combined. Taking such a complex we may arrive through the substitution of constituents at a complex whose relating relation is again judgment but whose terms do (...) not include entities which are logically suited for combination. This second judgment complex will not represent any of its terms as combined, for entities that are logically uncombinable are unrepresentable as combined. Russell’s theory does not, however, explain how the original judgment differs from the complex arrived at by the substitution of constituents such that the former but not the latter represents certain of its terms as combined. (shrink)

In her recent book, Russell (2023) examines various so-called “barriers to entailment,” including Hume’s law, roughly the thesis that an ‘ought’ cannot be derived from an ‘is.’ Hume’s law bears an obvious resemblance to the proscription on fallacies of modality in relevance logic, which has traditionally formally been captured by the so-called Ackermann property. In the context of relevant modal logic, this property might be articulated thus: no conditional whose antecedent is box-free and whose consequent is box-prefixed is valid (...) (for the connection, interpret box deontically). While the deontic significance of Ackermann-like properties has been observed before, Russell’s new book suggests a more broad-scoped formal investigation of the relationship between barrier theses of various kinds and corresponding Ackermann-like properties. In this paper, I undertake such an investigation by elaborating a general relevant bimodal logical framework in which several of the barriers Russell examines can be given formal expression. I then consider various Ackermann-like properties corresponding to these barriers and prove that certain systems satisfy them. Finally, I respond to some objections Russell makes against the use of relevance logic to formulate Hume’s law and related barriers. (shrink)

Plato’s Philebus is motivated by a question concerning the relationships among pleasure, wisdom, knowledge, and the good human life. Something of a philosophical tour de force, it also contains discussions of numerous important Platonic subjects like cosmic intelligence, distinctions among intellectual capacities, and the method of dialectical inquiry through division and collection. But the riches of the dialogue are obscured by its exceptional difficulty, a frequent grievance from commentators beginning at least with Galen. Plato’s Philebus: A Philosophical Discussion is an (...) indispensable new contribution to our understanding of this important and challenging dialogue, containing a wealth of new... (shrink)

It has been much debated whether Tractarian objects are what Russell would have called particulars or whether they include also properties and relations. This paper claims that the debate is misguided: there is no logical category such that Wittgenstein intended the reader of the Tractatus to understand his objects either as providing examples of or as not providing examples of that category. This is not to say that Wittgenstein set himself against the very idea of a logical category: quite (...) the contrary. However, where Russell presents his logical variety of particulars and the various types of universal, and Frege presents his of objects and the various types of function, Wittgenstein denies the propriety of such a priori expositions. Wittgenstein envisages a variety of logical types of entity but insists that the nature of these types is something to be discovered only through analysis. (shrink)

It is not immediately clear from Wittgenstein’s Tractatus how to connect his idea there of an object with the logical ontologies of Frege and Russell. Toward clarification on this matter, this paper compares Russell’s and Wittgenstein’s versions of the thesis of an atomic fact that it is a complex composition. The claim arrived at is that whilst Russell (at times at least) has one particular of the elements of a fact – the relation – responsible for the (...) unity of the whole, for Wittgenstein the unity of a fact is the product of copulative powers inherent in all its elements. All kinds of constituents of Tractarian facts – all kinds (forms) of object – are, to use Fregean terminology, unsaturated. (shrink)

The Oxford-educated philosopher serves up his trenchant survey of his academic discipline, offering his commentary on Descartes, Anselm Bertrand Russell, Sartre ...

In Minds and Bodies, one of philosophy's most dynamic and versatile thinkers gathers nearly forty review essays written over the past twenty years for publications of a nonspecialized kind. They cover biography, particularly of Russell and Wittgenstein; philosophy of mind, especially consciousness; and ethics, with an emphasis on applied ethics. Lucid and accessible, these essays together form a vivid picture of contemporary philosophy for the general reader, and will be welcomed by those within the philosophical community for their crisp (...) critical insights and rigorous assessments. (shrink)

According to the truthmaker theory that we favour, all contingent truths are made true by existing facts or states of affairs. But if that is so, then it appears that we must accept the existence of the negative facts that are required to make negative truths (such as 'There is no hippopotamus in the room.') true. We deny the existence of negative facts, show how negative truths are made true by positive facts, point out where the (reluctant) advocates of negative (...) facts (Russell, Armstrong, et al.) went wrong, and demonstrate the superiority of our solution to the alternatives. (shrink)

This chapter focuses on picture theory, which is sometimes spoken of as a theory of the proposition. By a proposition, Wittgenstein like Frege means something that determines its sense by means of a correlation between the mode of combination of its constituent symbols and the structure of its sense. It has been an orthodoxy amongst Tractatus interpreters, and continues to be such in the wider philosophical community, that Wittgenstein follows the Russell in offering a correspondence theory of truth. The (...) expression of a Tractarian fact provides that fact's mode of combination, and from here there can be no further question as to the ontological types of its constituents. Tractarian facts, it is however added, are not truth conditions but items whose existence explains the obtaining of truth conditions: a Tractarian atomic fact is not a truth condition but a truthmaker. (shrink)

Many beginning students in philosophy of language find themselves grappling with dense and difficult texts not easily understood by someone new to the field. This book offers an introduction to philosophy of language by explaining ten classic, often anthologized, texts. Accessible and thorough, written with a unique combination of informality and careful formulation, the book addresses sense and reference, proper names, definite descriptions, indexicals, the definition of truth, truth and meaning, and the nature of speaker meaning, as addressed by Frege, (...) Kripke, Russell, Donnellan, Kaplan, Evans, Putnam, Tarski, Davidson, and Grice. The explanations aim to be as simple as possible without sacrificing accuracy; critical assessments are included with the exposition in order to stimulate further thought and discussion. Philosophy of Language will be an essential resource for undergraduates in a typical philosophy of language course or for graduate students with no background in the field. It can be used in conjunction with an anthology of classic texts, sparing the instructor much arduous exegesis. ContentsFrege on Sense and Reference • Kripke on Names • Russell on Definite Descriptions • Donnellan's Distinction • Kaplan on Demonstratives • Evans on Understanding Demonstratives • Putnam on Semantic Externalism • Tarski's Theory of Truth • Davidson's Semantics for Natural Language • Grice's Theory of Speaker Meaning. (shrink)

I present a reconstruction of the logical system of the Tractatus, which differs from classical logic in two ways. It includes an account of Wittgenstein’s “form-series” device, which suffices to express some effectively generated countably infinite disjunctions. And its attendant notion of structure is relativized to the fixed underlying universe of what is named. -/- There follow three results. First, the class of concepts definable in the system is closed under finitary induction. Second, if the universe of objects is countably (...) infinite, then the property of being a tautology is \Pi^1_1-complete. But third, it is only granted the assumption of countability that the class of tautologies is \Sigma_1-definable in set theory. -/- Wittgenstein famously urges that logical relationships must show themselves in the structure of signs. He also urges that the size of the universe cannot be prejudged. The results of this paper indicate that there is no single way in which logical relationships could be held to make themselves manifest in signs, which does not prejudge the number of objects. (shrink)

often insisted existence in mathematics means logical consistency, and formal logic is the sole guarantor of rigor. The paper joins this to his view of intuition and his own mathematics. It looks at predicativity and the infinite, Poincaré's early endorsement of the axiom of choice, and Cantor's set theory versus Zermelo's axioms. Poincaré discussed constructivism sympathetically only once, a few months before his death, and conspicuously avoided committing himself. We end with Poincaré on Couturat, Russell, and Hilbert.

Paul Russell begins his book by rightly noting, “almost all commentators over the past two and a half centuries have agreed that Hume’s intentions in the Treatise should be interpreted in terms of two general themes: skepticism and naturalism” (vii). The skeptical reading interprets Hume’s principal aim as showing that “our ‘common sense beliefs’ (e.g. belief in causality, independent existence of bodies, in the self, etc.) lack any foundation in reason” (4). The naturalist reading interprets Hume’s aims according to (...) the “science of man,” derived from experience and observation. As described in the Introduction to the Treatise, this science is meant to explain the “principles of human nature” and thereby put the other sciences “on a foundation entirely new, and the only one upon which they can stand with any security.” The “riddle” of the Treatise is how to understand the relationship between the skeptical and naturalistic dimensions of the work—dimensions that “seem to be equally essential to what [Hume] is trying to achieve,” but which nevertheless appear “inherently opposed and irreconcilable” (7). Russell puts forward a novel and challenging solution. He argues that the relationship of the skepticism and naturalism in the Treatise can be made intelligible when we see that “it is problems of religion broadly conceived, that hold the contents of the Treatise together as a unified work” (viii). “More specifically,” he goes on, “the direction and structure of Hume’s thought in the Treatise is shaped on one side by his attack on the Christian metaphysics and morals and on the other by his efforts to construct in its place a secular, scientific account of morality.” ...It is difficult to do justice in such a short review to the sophistication of Russell’s analyses. To take one of many examples, Russell explains how Hume’s theory of ideas, rather than something simply adopted from Locke and Berkeley, instead follows Hobbes and expresses irreligious intentions by defending skepticism about our knowledge of God. Russell shows how religious thinkers tried to respond to the claim made by Hobbes that we have no idea of God. Either they insisted that we have knowledge of God through reason rather than through the senses, or they defended the view that our idea of God comes from analogy with ideas of ourselves and of nature. Hume is largely silent about our idea of God, but it is clear, as Russell argues, that he is aware of these debates and that his theory knowingly undermines claims by religious thinkers to possess knowledge of God. We have no simple impressions from which we can derive the idea of God, nor do we have ideas of the divine attributes (power, unity, intelligence, etc.) sufficient to provide us with a clear idea of the divinity. ..... Any criticisms of The Riddle of Hume’s Treatise, however, must be placed within the broader take-away: this book is a triumph and a model for work in the history of philosophy. It offers a powerful reading of the Treatise and of Hume’s intentions in writing it, while also correct- ing common misunderstandings about Hume’s place in early modern thought. It deserves to be read by anyone interested in Hume or in early modern philosophy. (shrink)

Wittgenstein responds in his Notes on Logic to a discussion of Russell's Principles of Mathematics concerning assertion. Russell writes: "It is plain that, if I may be allowed to use the word assertion in a non-psychological sense, the proposition "p implies q" asserts an implication, though it does not assert p or q. The p and the q which enter into this proposition are not strictly the same as the p or the q which are separate propositions." (PoM (...) p35) Wittgenstein replies: "Assertion is merely psychological. In not-p, p is exactly the same as if it stands alone; this point is absolutely fundamental." (NB p95) Wittgenstein's response is intriguing, not least because of the centrality to his Tractatus of the idea that a proposition says something. This paper will examine that idea, distinguishing it from 'merely psychological' assertion, and explore in this context how we should understand the occurrence of a Tractarian proposition within another. (shrink)

William Sweet gathers responses to the major writings of the leading figures of the British idealist movement, including contributions by Bertrand Russell, John Dewey, Sir Ernest Barker, Sir Henry Jones, R.F.A. Hoernle, J.S. MacKenzie, Brand Blanshard and others.

That I shall never meet myself coming towards me is clearly true. It will never happen. But, Weiss notwithstanding, there is a real need to bother with a demonstration. For that he can say of the assertion above, that it is both absurd and material and that its denial is material and certain, significant and indubitable, this makes at least one of his readers feel unsure of the grounds for his claim. In one philosophical tradition Weiss would appear (...) to have mixed the logical levels of his predicates. And while the error may turn out to reside in that philosophical tradition and not in Weiss's argument, nothing less than a demonstration one way or the other will settle the matter. If what he says is true, then a demonstration of his point should offer no difficulties. But, it might be argued that if Weiss's claim is a material one, then it cannot be logically certain. If, on the other hand, it is indubitable, then it cannot be material. (shrink)

In this book Colin Russell and his colleagues tread a somewhat difficult path between apologia for the British chemical industry and the historical account of its development. It is not an altogether comfortable journey, less from the point of view of maintaining balance between apologetics and critique, a difficulty of which the authors are clearly aware, than from the need to balance “general” history of the industry with the “environmental” theme. Looking first at the former, the book represents (...) a considerable achievement for the authors. They have marshaled a very wide array of technical and other information in order to offer largely narrative accounts of a wide range of industries. It is unlikely that this degree of expertise could be brought together in any other group, particularly since the death of W. A. Campbell. The broad canvas that they cover means that many of the themes and topics are skated over quite briefly. Nevertheless there is a good deal of technical detail and substantial, though rather less, social and human detail. I did find myself wondering who would read this study: it attempts to be all things to all people, but risks satisfying neither the specialist nor the general reader, if the latter person exists. Overall, however, the authors have fulfilled effectively what I take to have been their brief and can expect their book to become a standard reference work.I was less convinced by the environmental theme. The very self‐conscious evenhandedness of the authors grew wearisome—in fact I began to feel as if I was being talked down to in the final chapter. Surely a reader of this book does not need to be convinced that “modern life would be impossible without the methods and products of the chemical industry” . Similarly, there is little to be gained, in my opinion, from offering quasi‐moral judgments on the failures or otherwise of the chemical industry or from telling us in the manner of a school textbook that “chemists have endeavored to improve the quality of water supply” . Chemists, I suspect, have done what they were told and paid to do. We know that the chemical industry has been a polluter and has attempted to recycle its waste products for economic and political reasons. What is of interest are the technical and socioeconomic determinants of this. We get a good deal of the former but rather little of the latter. This is disappointing when one knows that one of the authors, Sarah Wilmott, has written a sophisticated analysis of one aspect of this question, particularly emphasizing how the industry employed chemical knowledge to reconfigure the notion and legal positioning of chemical pollution . Of course it would be asking a lot to extend this type of empirically grounded analysis across the divisions and issues associated with the chemical industry.This then is a worthy book of reference that brings together good technical and synoptic accounts of many aspects of the British chemical industry in one location. However, it employs a cautious—if one were being brutal one might say pedestrian—historiography, and I did not feel that it broke new historical or conceptual ground. But perhaps it was never intended to. (shrink)

Insights into the history of chemistry Content Type Journal Article DOI 10.1007/s11016-010-9482-4 Authors Peter J. Ramberg, Truman State University, 100 E. Normal, Kirksville, MO 63501, USA Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.