Carlo Penco

[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 "Wittgenstein in relation to his times" Von Wright1 poses a dilemma regarding the relationship between three wittgensteinian tenets: (i) the view that individual's beliefs and thoughts are entrenched in accepted language games and socially sanctioned forms of life (ii) the view that "philosophical problems are disquietudes of the mind caused by some malfunctioning in the language games, and hence in the way of life of the community". (iii) the "rejection of the scientific-technological civilisation of industrialised societies". The dilemma is the following: is Wittgenstein's rejection of technological civilisation strictly linked to his general view of philosophy? Or is it "only contingently - that is for historical and psychological reasons, connected with the other two in Wittgenstein's thought"? Von Wright argues, even with some doubts, for a strong link between Wittgenstein's rejection of technological society and his general approach to philosophy; the argument is as follows: "because of the interlocking of language and ways of life, a disorder in the former reflects disorder in the latter. If philosophical problems are symptomatic of language, producing malignant outgrowths which obscure our thinking, then there must be a cancer in the Lebensweise, in the way of life itself" (p.119). The argument seems to be not compelling; among some of the main philosophical problems Wittgenstein is willing to "cure" there are misunderstandings lying in the history of our language much time before our technological civilisation (Wittgenstein refers to Augustine and Plato as suffering these disorder of language). We should generalise the criticism to technological society to the effect of enclosing ancient Greece. In this way the criticism seems to loose all its polemical vein, becoming a generic criticism of the structures of western thought since Greece. But probably this was the point Wittgenstein wanted to make in his criticism of the idea of progress and technological civilisation. I will argue therefore for the second horn of the dilemma, relying on another kind of de facto argument: contemporary technological civilisation is embodying some of Wittgenstein's main ideas (we might also note that these ideas are among the strongest points Wittgenstein gives against Greek classical tradition in philosophy)..

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

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.

This volume contains essays that explore explicit and implicit communication through linguistic research. Taking as a framework Paul Grice's theories on "what is said," the contributors explore a number of areas, including: the boundary between semantics and pragmatics; the concept of implicit communication; the idea of the logical form of our assertions; the notion of conventional meaning; the phenomenon of deixis, which refers to when an utterance require context in order to be understood fully; the treatment of definite descriptions; and the different kinds of pragmatic processes.

This paper is devoted to discuss a general tendency in contextualism which is known as "radical contextualism". 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. I stress some similarities between Wittgenstein's thought and Multi Context theories in artificial inteligence. In the last part I give some argument against a rigid interpretation of "local holism": I claim the need to give restrictions to local holim and to develop a study of the connections between "default" properties and high level rules which are studied in Multi−Context theories.

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)

Context is a concept used by philosophers and scientists with many different definitions. Since Dummett we speak of "context principle" in Frege and Wittgenstein: "an expression has a meaning only in the context of a sentence". The context principle finds an extension in some of Wittgenstein's ideas, especially in his famous passage where he says that "to understand a sentence is to understand a language". Given that Wittgenstein believes that "the" language does not exist but only language games exist, we should conclude that he is speaking of the need to consider any sentence always in the context of a language game1. This general attitude is certainly attuned with the contemporary tendency to place contextual restrictions to the interpretations of our sentences. However we find so many kinds and forms of restrictions that this general attitude is not enough to give us a viable tool to find an order in the web of so many different theories of context. To look for an order or, at least a clarification, we may start with two contrasting paradigms of theories: the "objective" theory of contexts, where context is a set of features of the world, and the "subjective" theories of context, where context is the cognitive background of a speaker or agent in respect to a situation2. We have here not only two different ways of using the term "context" but also two different conceptions of semantics and philosophy. The different conceptions are normally associated, respectively, with the classical paradigm of model theoretic semantics (Kaplan, Lewis Stalnaker) on one hand and with the A.I. paradigm (McCarthy, Buvac, Giunchiglia) on the other hand. For sake of simplicity I will restrict my attention3 mainly to Kaplan 1989 and to McCarthy 1993 and Giunchiglia 1993. The two different conceptions can be summarised with the following schema: a) context as: set of features of the world..