Carlo Penco

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).

Riassunto: in queste note presentouna breve panoramica della scienza cognitiva, che costituisce a tutt'oggi, a più di vent'anni dalla sua nascita, un coacervo di novità rilevanti nell'ambito della ricerca interdisciplinare. Dopo una prima presentazione generale (§1), traccio una breve storia della disciplina (§2) per passare poi a descrivere nel § 3 uno dei nuclei di fondo della scienza cognitiva: il funzionalismo e l'idea di mente come sistema di rappresentazioni o mappe cognitive. Nel § 4. accenno ad alcune tensioni interne alla scienza cognitiva. Essa è tuttora un campo disciplinare con forti contrasti sui paradigmi da seguire nella descrizione dell'architettura della mente. Una sfida recente è venuta dalla robotica "situata" e dalla tesi che occorre fare a meno delle rappresentazioni mentali nella costruzione di robot intelligenti. Nel § 5 discuto questa sfida mostrando che, nonostante l'entusiasmo suscitato dai primi successi della nuova robotica, il cardine della scienza cognitiva resta solido, anche se bisognoso di completamento. Nella conclusione, al § 6, tocco di sfuggita il tema della coscienza dei sistemi intelligenti (umani e artificiali) e invito a cercare strade per affrontare i problemi che si porranno alle nuove generazioni di studiosi, ormai al di là della frattura tra cultura umanistica e scientifica, frattura che forse trova in Italia uno degli ultimi ambienti in cui sopravvivere.

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.

Questa conferenza offre una presentazione semplificata del concetto di contesto nella filosofia analitica,in particolare nella filosofia del linguaggio. E' semplificata perché tralascia una serie di discussioni rilevanti per fermarsi alle grandi linee che segnano l'emergenza del concetto di contesto in filosofia del linguaggio. Inoltre mi concentro su un aspetto particolare del dibattito: la linea di confine tra pragmatia e semantica e il ruolo che il concetto di contesto ha in questo dibattito, cercando di evidenziare i punti di disaccordo tra le parti in causa. Nel primo paragrafo riprendo brevemente alcune idee di Frege, mostrando come aiutano a individuare una tripartizione abbastanza standard del concetto di contesto. Nel secondo paragrafo riespongo una tripartizione fatta da John Perry, cercando di "generalizzare" quello che Perry chiama "contesto postsemantico". Nella serie di esempi che seguono, mostro dove si situa il punto di discrimine tra la teorie più vicine alla semantica tradizionale e le teorie contestualiste radicali, che danno maggior rilevanza agli aspetti cognitivi rispetto a quelli semantici. Riprendo quindi in generale le due strategie alternative che si contrappongono sul modo di considerare i rapporti tra semantica e pragmatica. Nell'ultimo paragrafo provo a indicare quali sono i principali problemi dell'assunzione di una prospettiva radicalmente contestualista.

This paper tries to give some substance to local holism, a picture that seems to fit Wittgenstein’s analysis of the working of language. In the first part I state the well-known paradox of semantic holism, as discussed in philosophy of language: if meaning is holistic there is no possibility to share any meaning. In the second part I present the different answers to this paradox, from atomism to different forms of holism. In the third part I give a criticism of the traditional interpretation of Wittgenstein as a supporter of global holism. As an alternative lecture I will suggest some lines of Wittgenstein's thought leading towards a definition of local holism. Eventually I will show connections with ideas developed in Multi Context theories in artificial intelligence, which help to show a possible direction of inquiry about restrictions on locality.

In this paper [submitted in 2008] I discuss the relation between truth and assertion. But the paper was never published, because the journal did not start (I don't know whether it started with another name and I wish all the best for this enterprise). After a while, I realized that what I had written was unclear and I tried to re-write with more details for "Agora filosofica". In this new paper I discuss in detail Kripke's example presented as a case against Donnellan's distinction, and I claim that one of the two dialogues breaks Grice's Cooperation principle (and,in general, the charity principle).

One particular topic in the literature on Frege’s conception of sense relates to two apparently contradictory theses held by Frege: the isomorphism of thought and language on one hand and the expressibility of a thought by different sentences on the other. I will divide the paper into five sections. In (1) I introduce the problem of the tension in Frege’s thought. In (2) I discuss the main attempts to resolve the conflict between Frege’s two contradictory claims, showing what is wrong with some of them. In (3), I analyze where, in Frege’s writings and discussions on sense identity, one can find grounds for two different conceptions of sense. In (4) I show how the two contradictory theses held by Frege are connected with different concerns, compelling Frege to a constant oscillation in terminology. In (5) I summarize two further reasons that prevented Frege from making the distinction between two conceptions of sense clear: (i) the antipsychologism problem and (ii) the overlap of traditions in German literature contemporary to Frege about the concept of value. I conclude with a hint for a reconstruction of the Fregean notion of ‘thought’ which resolves the contradiction between his two theses.

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

In this paper I apply a well known tension between cognitive and semantic aspects in Frege’s notion of sense to his treatment of indexicals. I first discusses Burge’s attack against the identification of sense and meaning, and Kripke’s answer supporting such identification. After showing different problems for both interpreters, the author claims that the tension in Frege’s conception of sense (semantic and cognitive) accounts for some shortcomings of both views, and that considering the tension helps in understanding apparently contradictory Fregean claims about sameness of sense of sentences with indexicals. I conclude that the Fregean notion of sense, also in its cognitive aspect, cannot be reduced to linguistic meaning, and that the Fregean tension between two notions of sense may also explain the discussion Frege gives on the indexical “I”, proposing to develop a picture of indexicals as hidden complex demonstratives, as originally suggested by Burge.