Carlo Penco

In this paper I shall deal with the role of "understanding a thought" in the debate on the definition of the content of an assertion. I shall present a well known tension in Frege's writings, between a cognitive and semantic notion of sense. This tension is at the source of some of the major contemporary discussions, mainly because of the negative influence of Wittgenstein's Tractatus, which did not give in-depth consideration to the tension found in Frege. However many contemporary authors, after the first attempt by Carnap himself, have tried to make room both for a cognitive and semantic aspect of meaning. I claim that at least some of these attempts (Dummett, Perry and Chalmers) are seriously flawed, mainly due to the difficulty in making a proper connection between the two different conceptions of sense. I shall outline an alternative project, which takes into consideration Frege's requirements on antipsychologism and of the objectivity of thought, while maintaining a close connection between the two aspects of sense

The aim of this collection of papers is to present different philosophical perspectives on the mental, exploring questions about how to define, explain and understand the various kinds of mental acts and processes, and exhibiting, in particular, the contrast between naturalistic and non-naturalistic approaches. There is a long tradition in philosophy of clarifying concepts such as those of thinking, knowing and believing. The task of clarifying these concepts has become ever more important with the major developments that have taken place over the last century in the human and cognitive sciences - most notably, psychology, sociology, linguistics, neurophysiology, AI, and cognitive science itself. In all these sciences, there is a need to delineate the domain of the mental and to elucidate the key concepts and underlying assumptions. This need is widely recognized, but approaches and answers vary significantly. Some stress the representational features involved in most of our mental processes, others the inferential dimension; some stress the necessity of using empirical data, others the need to refine ideas before pursuing and drawing on empirical research. The papers collected in this volume are grouped into four parts, on language and thought, on knowledge, belief and action, on intentionality, and on naturalism. The volume will be welcomed by all those engaged and interested in debates about the mental in philosophy and the human and cognitive sciences. Table of Contents PART I: LANGUAGE AND THOUGHT Andrew Woodfield, Public Words Considered as Vehicles of Thinking Andrea Bianchi, Speaking and Thinking (Or: A More Kaplanian Way to a Unified Account of Language and Thought) Stefano Predelli, The Strange Case of the Missing Constituent PART II: KNOWLEDGE, BELIEF AND ACTION Pascal Engel, Taking Seriously Knowledge as a Mental State Carlo Gabbani, Epistemology and the Eliminative Stance Jennifer Hornsby, Knowledge, Belief and Reasons for Acting Wolfgang Kunne, Some Varieties of Deception PART III: INTENTIONALITY Sandro Nannini, Intentionality Naturalised Elisabetta Sacchi, Thought and Thinking: the Ontological Ground of Intentionality Elisabeth Pacherie, Is Collective Intentionality Really Primitive? PART IV: NATURALISM Marcello Frixione, Do Concepts exist? A Naturalistic Point of View Tim Crane, Cosmic Hermeneutics vs. Emergence: the Challenge of the Explanatory Gap Achim Stephan and Robert C. Richardson, What Physicalism Should Provide Us With Mario De Caro, The Claims of Naturalism

The paper "Does Epistemological Holism lead to Meaning – Holism" (Cozzo, 2002) touches one of the main problems of a molecularist theory of meaning: how to restrict the class of inferences connected with a word, in order to define the sense of the word. I will discuss the starting point of this approach, mainly the pre-theoretical criterion against meaning holism: meaning holism, following a well-known argument by Dummett, reduces communication to a mystery. However there is a strong background assumption of this argument: communication is sharing the same meanings. Accepting this assumption without acknowledging it makes the entire proposal more problematic than it appears at first sight. In what follows I will try to clarify the possibility of a different reaction to meaning holism, putting forward some distinctions which come to light when the above stated assumption is made explicit. Then, some other comments will follow on the difficulty of avoiding extreme meaning holism, even within Cozzo's elegant attempt to implement a molecularist vision; in the end, his notion of the sense of a word will appear to be difficult to define, if these holistic aspects of language take the space they deserve even in his theory. I conclude with two remarks regarding two relevant requirements for a theory of meaning (conservativeness and harmony)

This paper is a comparison of Kripke’s and Künne’s interpretations of Frege’s theory of indexicals, especially concerning Frege’s remarks on time as “part of the expression of thought”. I analyze the most contrasting features of Kripke’s and Künne’s interpretations of Frege’s remarks on indexicals. Subsequently, I try to identify a common ground between Kripke’s and Künne’s interpretations, and hint at a possible convergence between those two views, stressing the importance given by Frege to nonverbal signs in defining the content of thought. I conclude by indicating a possible direction for further research.

In this paper, I will discuss a well-known oscillation in Frege’s conception of sense. My point is only partially concerned with his two different criteria of sense identity, and touches upon a more specific point: what happens if we apply Frege’s intuitive criterion for the difference of thoughts to logically equivalent sentences? I will try to make a schematic argument here that will preempt any endeavor to make Frege more coherent than he really is. In sections A and B, I will present two alternative Fregean ways to treat the sense of logically equivalent sentences. Frege really oscillated between two alternative conceptions of sense, and his inability to detect the contrast between the two alternative conceptions is partly due to his strong conception of rationality. To apply the criterion of difference of thoughts to logical matters, we may also use a weak notion of rationality, or at least a notion of rationality of human agents, with limited computational resources. The distinctions towards which Frege was striving are better understood nowadays from the point of view of the treatment of limited rationality, which imposes itself even in logical matters.

Nel febbraio 1912 Wittgenstein venne ammesso al Trinity College con Russell come supervisor, e iniziò a seguire le lezioni di Moore. E’ probabile che leggesse il libretto di Moore, Ethics, pubblicato al suo arrivo a Cambridge, o che ritrovasse nelle lezioni di Moore alcune delle suggestioni presenti nel libro. Ma dopo il Tractatus Wittgenstein dedicò poco spazio alle riflessioni sull’etica e quel poco in un periodo ristretto di tempo, agli inizi degli anni ‘30, dalla Conferenza sull’etica2 alle lezioni del ’32-33. Alle lezioni del 32-33 assistettero sia Alice Ambrose che George E. Moore, che ci lascianpo diversi tipi di appunti:3 Ambrose riporta frasi di Wittgenstein, Moore presenta e rielabora le sue idee. Una lettura comparata di questi appunti dà un’idea abbastanza chiara di quanto Wittgenstein in quegli anni riuscisse a fondere le sue idee sui giudizi morali con le sue idee sulla grammatica filosofica che veniva elaborando nel Big Typescript.

[This is a larger version of the published article] In the discussion on semantic holism it has been claimed that A.I. is almost entirely holistic. In this paper I show that some of the main lines of research in symbolic artificial intelligence are not holistic; I will consider three classical cases: toy words, frames and contextual reasoning. I claim that these examples from A.I. can be interpreted as implementing molecularist intuitions about language. Eventually I suggest that some assumptions behind the discussion on holism should be re-interpreted, expecially the usual references to Frege and Wittgenstein.

In questo articolo parlo della influenza di Einstein su Wittgenstein a partire da alcuni problemi che si pongono all’olismo. L’olismo è stato spesso collegato a Wittgenstein, almeno in forma di “olismo locale”. L’olismo è però soggetto a due tipi di paradossi: il paradosso della comunicazione per l’olismo semantico e il paradosso del relativismo concettuale per l’olismo epistemologico. Dopo aver presentato brevemente i due paradossi, confronto le risposte di Davidson, in difesa dell’olismo, con quelle di Wittgenstein (o di tipo wittgensteiniano). Da questo confronto nasce un problema nell’interpretazione di Wittgenstein. Infatti, dalle sue risposte ai due paradossi emerge una tensione nella sua visione dei giochi linguistici e in particolare nei suoi esperimenti mentali, che sono stati tradizionalmente interpretati in modi contrapposti. La mia proposta è che una rilettura di alcune riflessioni di Wittgenstein su Einstein e la relatività può aiutare a cogliere meglio il significato di questa tensione.

On the basis of historical and textual evidence, this paper claims that after his Tractatus, Wittgenstein was actually influenced by Einstein's theory of relativity and, the similarity of Einstein's relativity theory helps to illuminate some aspects of Wittgenstein's work. These claims find support in remarkable quotations where Wittgenstein speaks approvingly of Einstein's relativity theory and in the way these quotations are embedded in Wittgenstein's texts. The profound connection between Wittgenstein and relativity theory concerns not only Wittgenstein's “verificationist” phase , but also Wittgenstein's later philosophy centred on the theme of rule‐following

A traditional argument is often used against Mill's theory of names (the meaning of a name is exhausted by its referent). Mill's theory implies transparency of proper names (coreferring proper names are substitutable salva veritate); but examples like Frege's and Quine's show that proper names are not transparent in belief contexts. This could be thought to be a reductio ad absurdum of Mill's theory. In " A puzzle about Belief" (1979; 1988) Kripke builds up an argument which aims to show that the same problems, given by the principle of transparency of proper names, can also be generated without the use of that principle, but with some weaker and more general principles, which seem to be difficult to reject. (see Donellan) Therefore, the traditional argument against Mill's theory does not work. If you want to reject Mill's theory with some reductio ad absurdum, you should reject two very intuitive and apparently valid principles. The well known puzzle is based on the assumption that our speaker is normal non omniscient, sincere, reflective and not conceptually confused. The two principles used are the Disquotational Principle (DP) and the Translation Principle (TP).

According to the Common Ground account proposed by Stalnaker, speakers involved in a verbal interaction have different propositional attitudes towards presuppositions. In this paper we propose an experimental study aimed at estimating the psychological plausibility of the Stalnakerian model. In particular, the goal of our experiment is to evaluate variations in accepting as appropriate a sentence that triggers a presupposition, where different attitudes are taken towards the presupposition required. The study conducted suggests that if a speaker has the attitude of belief towards the content of a presupposition, she may evaluate an utterance as more appropriate in a shorter time than in cases where she holds an attitude of presumption or of assumption. Therefore, data collected support the psychological soundness of what might be considered the main, but also most debated, theory of presupposition on the market.

In this paper we give some theoretical links between the wittgensteinian strategy of language-games and the strategy followed by students in Artificial Intelligence in the seventies. We refer also to the interpretation given by Dummett and Prawitz to the Wittgenstein's slogan of "meaning as use", showing the link of this ideas with the needs of Artificial Intelligence. We sustain that the concept of "procedure" as developed in early Artificial Intelligence is still one of the main attempt, realized in that field of research, to give a definition of meaning , which gives good hopes to be a suitable explicatum of the idea of "meaning as use".

In what follows I consider the apparent contrast between two kinds of theories of context: a theory of objective context - exemplified in the works of Kaplan and Lewis - and a theory of subjective context -exemplified in the works of McCarthy and Giunchiglia. I consider then some difficulties for the objective theory. I don't give any formalization; instead I give some theoretical points about the problem. A possible result could be the abandon of the double indexing for a development a multi-context theory (I give an example of a case). However other results could be possible and a challenge is posed to solve problems using the best results from each tradition of research.