Online research in philosophy

This paper concerns two points of intersection between de se attitudes and the study of natural language: attitude ascription and communication. I first survey some recent work on the semantics of de se attitude ascriptions, with particular attention to ascriptions that are true only if the subject of the ascription has the appropriate de se attitude. I then examine – and attempt to solve – some problems concerning the role of de se attitudes in linguistic communication.

Some twenty years ago, semanticists of natural language came to be overwhelmed by the problem of semantic analysis of belief sentences (and sentences reporting other kinds of propositional attitudes): the trouble was that sentences of the shapes X believes that A and X believes that B appeared to be able to have different truth values even in cases when A and B shared the same intension, i.e. were, from the viewpoint of intensional semantics, synonymous 1 . Thus, taking intensional semantics for granted, belief sentences appeared to violate the principle of intersubstitutivity of synonyms. The verdict of the gurus of intensional semantics was that hence intensional semantics is inadequate, or at least insufficient for the purposes of analysis of propositional attitudes; and that we need a kind of a ‘hyperintensional semantics’.

If there is a dogma in the contemporary philosophy of the cognitive mind, it must be the notion that cognition is semantic causation or, differently put, that it is semantics that runs the psyche. This is what the notion of psychosemantics and (often) intentionality are all about. Another dogma, less widespread than the first but almost equally potent, is that common sense psychology is the implicit theory of psychosemantics. The two dogmas are jointly encapsulated in the following axiom. Mental attitudes such as beliefs and desires have essentially semantic contents, or are semantically evaluable. (This is why they are called propositional attitudes.) Mental attitudes have causal powers in virtue of their semantic properties. The content of an attitude has causal powers qua semantic, or more exactly in virtue of its syntactic structure which reflects relevant semantic properties and relations. (Propositions attitudinized cause in virtue of their semantically sensitive syntax.) It is the fact that mental attitudes cause in virtue of being semantic that explains why the cognitive mind is essentially semantic and why common sense psychology is implicitly true of the semantic mind.

During the past couple of decades, philosophy of mind--with its siblings, philosophy of psychology and cognitive science--has been one of the most exciting areas of philosophy. Yet, in that time, I have come to think that there is a deep flaw in the basic conception of its object of study--a deep flaw in its conception of the so-called propositional attitudes, like belief, desire, and intention. Taking belief as the fundamental propositional attitude, scientifically-minded philosophers hold that beliefs, if there are any, are brain states. I call this conception of belief.

It is argued that a second-order belief to the effect that I now have some particular propositional attitude is always true (Incorrigibility). This is not because we possess an infallible cognitive faculty of introspection, but because that x believes that he himself now has attitude A to proposition P entails that x has A to P. Incorrigibility applies only to second-order beliefs and not to mere linguistic avowals of attitudes. This view combines a necessary asymmetry between 1st and 3rd person ascriptions with Objectivism about the propositional attitudes. The epistemic justification of second-order beliefs is shown to be a further question.

In this article I will develop the first steps of a wholly general theory of how indexical and reflexive pronouns function in propositional attitude ascriptions. This will involve a theory of ascriptions of de se beliefs and de se utterances, which can probably be also generalized so as to apply to ascriptions of other attitudes. It will also involve a theory about the ascriptions of beliefs or other attitudes a person has at a time about what happens then (attitudes de praesente, as they are sometimes called) and the beliefs of a person concerning the one whom he is addressing (which I might call beliefs de recipiente) etc.. The most distinctive aspect of the theory will be that I will argue that many phenomena associated with such ascriptions that are nowadays most often viewed as pragmatic are semantic. I will use a system of symbolic logic to formalize such ascriptions. I will start from David Kaplan’s Logic of Demonstratives and generalize it into a logic I call Doxastic Logic of Demonstratives, DLD. Crucial to the semantics of the logic will be an exact definition of the adjustments of a character from one context to another.

An ascent routine (AR) allows a speaker to self-ascribe a given propositional attitude (PA) by redeploying the process that generates a corresponding lower level utterance. Thus, we may report on our beliefs about the weather by reporting (under certain constraints) on the weather. The chief criticism of my AR account of self-ascription, by Alvin Goldman and others, is that it covers few if any PA's other than belief and offers no account of how we can attain reliability in identifying our attitude as belief, desire, hope, etc., without presupposing some sort of recognition process. The criticism can be answered, but only by giving up a tacit—and wholly unnecessary—assumption that has influenced discussions of ascent routines. Abandoning the assumption allows a different account of ARs that avoids the criticism and even provides an algorithm for finding a corresponding lower level utterance for any PA. The account I give is supported by research on children's first uses of a propositional attitude vocabulary.

This book makes a stimulating contribution to the philosophy of language and philosophy of mind. It begins with a spirited defense of the view that propositions are structured and that propositional structure is "psychologically real." The author then develops a subtle view of propositions and attitude ascription. The view is worked out in detail with attention to such topics as the semantics of conversations, iterated attitude ascriptions, and the role of propositions as bearers of truth. Along the way important issues in the philosophy of mind are addressed.

Sentences attributing beliefs, doubts, wants, and the like (propositional attitudes, in Russell's terminology) have posed a major problem for semantics. Recently the pragmatic description of language has become more systematic. I shall discuss the formalization of pragmatics, and propose an analysis of belief attribution that avoids some main problems apparently inherent in the semantic approach.