Symbols and Computation A Critique of the Computational Theory of Mind
- Steven Horst
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Over the past several decades, the philosophical community has witnessed the emergence of an important new paradigm for understanding the mind.1 The paradigm is that of machine computation, and its influence has been felt not only in philosophy, but also in all of the empirical disciplines devoted to the study of cognition. Of the several strategies for applying the resources provided by computer and cognitive science to the philosophy of mind, the one that has gained the most attention from philosophers has been the ‘Computational Theory of Mind’ (CTM). CTM was first articulated by Hilary Putnam (1960, 1961), but finds perhaps its most consistent and enduring advocate in Jerry Fodor (1975, 1980, 1981, 1987, 1990, 1994). It is this theory, and not any broader interpretations of what it would be for the mind to be a computer, that I wish to address in this paper. What I shall argue here is that the notion of ‘symbolic representation’ employed by CTM is fundamentally unsuited to providing an explanation of the intentionality of mental states (a major goal of CTM), and that this result undercuts a second major goal of CTM, sometimes refered to as the ‘vindication of intentional psychology.’ This line of argument is related to the discussions of ‘derived intentionality’ by Searle (1980, 1983, 1984) and Sayre (1986, 1987). But whereas those discussions seem to be concerned with the causal dependence of familiar sorts of symbolic representation upon meaning-bestowing acts, my claim is rather that there is not one but several notions of ‘meaning’ to be had, and that the notions that are applicable to symbols are conceptually dependent upon the notion that is applicable to mental states in the fashion that Aristotle refered to as paronymy. That is, an analysis of the notions of ‘meaning’ applicable to symbols reveals that they contain presuppositions about meaningful mental states, much as Aristotle's analysis of the sense of ‘healthy’ that is applied to foods reveals that it means ‘conducive to having a healthy body,’ and hence any attempt to explain ‘mental semantics’ in terms of the semantics of symbols is doomed to circularity and regress. I shall argue, however, that this does not have the consequence that computationalism is bankrupt as a paradigm for cognitive science, as it is possible to reconstruct CTM in a fashion that avoids these difficulties and makes it a viable research framework for psychology, albeit at the cost of losing its claims to explain intentionality and to vindicate intentional psychology. I have argued elsewhere (Horst, 1996) that local special sciences such as psychology do not require vindication in the form of demonstrating their reducibility to more fundamental theories, and hence failure to make good on these philosophical promises need not compromise the broad range of work in empirical cognitive science motivated by the computer paradigm in ways that do not depend on these problematic treatments of symbols.
- Block, N. (1986), ‘Advertisement for a Semantics for Psychology’, Midwest Studies in Philosophy 10, pp. 615–678.
- Cummins, R. (1983), The Nature of Psychological Explanation, Cambridge, MA: MIT Press/Bradford Books.
- Cummins R. (1989), Meaning and Mental Representation, Cambridge, MA: MIT Press/Bradford Books.
- Dennett, D. (1987), ‘Evolution, Error, and Intentionality’, in D. Dennett, ed., The Intentional Stance, Cambridge, MA: MIT Press.
- Dretske, F. (1981), Knowledge and the Flow of Information, Cambridge, MA: MIT Press/Bradford Books.
- Dretske, F. (1986), ‘Misrepresentation’, in R. Bodgan, ed., Belief, Oxford University Press.
- Dretske, F. (1988), Explaining Behavior, Cambridge, MA: MIT Press/Bradford Books.
- Field, H. (1978), ‘Mental Representation’, Erkentniss 13, pp. 9–61.
- Fodor, J. (1975), The Language of Thought, New York: Thomas Crowell.
- Fodor, J. (1980), ‘Methodological Solipsism Considered as a Research Strategy in Cognitive Science’, Behavioral and Brain Sciences 3 (1980), pp. 63–73.
- Fodor, J. (1981), Representations, Cambridge, MA: Bradford Books/MIT Press.
- Fodor, J. (1987), Psychosemantics, Cambridge, MA: Bradford Books.
- Fodor, J. (1990), A Theory of Content and Other Essays, Cambridge, MA: Bradford Books, MIT Press.
- Fodor, J. (1994), The Elm and the Expert, Cambridge, MA: Bradford Books, MIT Press.
- Haugeland, J, ed. (1981), Mind Design, Cambridge, MA: MIT Press/Bradford Books.
- Horst, S. (1990), Symbols, Computation and Intentionality: A Critique of the Computational Theory of Mind. Doctoral Dissertation, University of Notre Dame.
- Horst, S. (1992), ‘Notions of ‘Representation’ and the Diverging Interests of Philosophy and Empirical Science’, Proceedings of the 1992 Conference on Representation at SUNY Buffalo.
- Horst, S. (1996), Symbols, Computation and Intentionality: A Critique of the Computational Theory of Mind. Los Angeles: University of California Press.
- Loar, B. ‘Conceptual Role and Truth Conditions’, Notre Dame Journal of Formal Logic 23, pp. 272–283.
- Millikan, R. (1984), Language, Thought and other Biological Categories, Cambridge, MA: MIT Press.
- Millikan, R. (1986), ‘Thoughts Without Laws: Cognitive Science Without Content’, Philosophical Review 95, pp. 47–80.
- Papineau, D. (1985), ‘Representation and Explanation’, Philosophy of Science 51, pp. 550–572.
- Putnam, H. (1960), ‘Minds and Machines’, in S. Hook, ed., Dimensions of Mind, New York: New York University Press.
- Putnam, S. (1961), ‘Brains and Behavior’, originally read as part of the program of the American Association for the Advancement of Science, Section L, December, 1961, printed in N. Block, ed., Readings in the Philosophy of Psychology, Cambridge, MA: Harvard University Press, 1980.
- Pylyshyn, Z. (1980), ‘Computation and Cognition: Issues in the Foundation of Cognitive Science’, The Behavioral and Brain Sciences 3, pp. 111–32.
- Sayre, K. (1986), ‘Intentionality and Information Processing’ Behavioral and Brain Sciences 9, No. 1 (1986).
- Sayre, K. (1987), ‘Cognitive Science and the Problem of Semantic Content’, Synthese 70, pp. 247–269.
- Searle, J. (1980), ‘Minds, Brains and Programs’, Behavioral and Brain Sciences 3, pp. 417–424.
- Searle, J. (1983), Intentionality, Cambridge, England: Cambridge University Press.
- Searle, J. (1984), Minds, Brains and Science, Cambridge, MA: Harvard University Press.
- Schiffer, S. (1972), Meaning, Oxford, England: Clarendon Press.
- Stich, S. (1983), From Folk Psychology to Cognitive Science, Cambridge, MA: MIT Press.
- Symbols and Computation A Critique of the Computational Theory of Mind
Minds and Machines
Volume 9, Issue 3 , pp 347-381
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- Steven Horst (1)
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- 1. Wesleyan University, USA