Natika Newton

John Searle has argued that one can imagine embodying a machine running any computer program without understanding the symbols, and hence that purely computational processes do not yield understanding. The disagreement this argument has generated stems, I hold, from ambiguity in talk of 'understanding'. The concept is analysed as a relation between subjects and symbols having two components: a formal and an intentional. The central question, then becomes whether a machine could possess the intentional component with or without the formal component. I argue that the intentional state of a symbol's being meaningful to a subject is a functionally definable relation between the symbol and certain past and present states of the subject, and that a machine could bear this relation to a symbol. I sketch a machine which could be said to possess, in primitive form, the intentional component of understanding. Even if the machine, in lacking consciousness, lacks full understanding, it contributes to a theory of understanding and constitutes a counterexample to the Chinese Room argument.

A dynamic model of brain mechanisms of consciousness and emotion offers more comprehensive and coherent solutions than the traditional Cartesian model to many traditional puzzles in philosophy of mind. One of these is self-awareness: how is it possible for a conscious being to be reflexively aware of its own consciousness? In this chapter I discuss specific ways this question can be treated using a dynamic model. The discussion has two parts. First, I propose, in general terms, a way in which familiar aspects of conscious emotional states can be viewed as elements of a dynamical system. Second, I show how, on this model, one can be consciously aware of one’s own emotions.

The notion of introspection is unparsimonious and unnecessary to explain the experiential grounding of our mentalistic concepts. Instead, we can look at subtle proprioceptive experiences, such as the experience of agency in planning motor acts, which may be explained in part by the phenomenon of collateral discharge or efference copy. Proprioceptive sensations experienced during perceptual and motor activity may account for everything that has traditionally been attributed to a special mental activity called “introspection.”.

In this paper I sketch an account of (a) the origin of the terms and concepts of folk psychology, and (b) the true nature of mental states. I argue that folk psychology is built on metaphors for the functioning physical body, and that mental states are neurological traces which serve as schematic ‘mental images’ of those same functions. Special attention is paid to the folk psychology of self-consciousness. In particular, I argue that the notion of introspection is mistaken, and I criticize recent claims of Patricia and Paul Churchland on this subject. I conclude by discussingrecent empirical evidence in support of my approach

The sensorimotor theory of cognition holds that human cognition, along with that of other animals, is determined by sensorimotor structures rather than by uniquely human linguistic structures. The theory has been offered to explain the use of bodily terminology in nonphysical contexts, and to recognize the role of experienced embodiment in cognition. This paper defends a version of the theory which specifies that reasoning makes use of mental models constructed by means of action-planning mechanisms. Evidence is offered from cognitive psychology, the neurosciences, and work in primatology and evolutionary theory. Further scientific and philosophical advantages of the theory are discussed: the theory is more parsimonious than its rival, and it offers better accounts of intrinsic intentionality and consciousness. The paper concludes with observations concerning the role of language in thought.

How can symbols have meaning for a subject? Foundations of Understanding argues that this is the key question to ask about intentionality, or meaningful thought. It thus offers an alternative to currently popular linguistic models of intentionality, whose inadequacies are examined: the goal should be to explain, not how symbols, mental or otherwise, can refer to or mean states of affairs in the external world, but how they can mean something to us, the users. The essence of intentionality is shown to be conscious understanding, the roots of which lie in experiences of embodiment and goal-directed action. A developmental path is traced from a foundation of conscious understanding in the ability to perform basic actions, through the understanding of the concept of an objective, external world, to the understanding of language and abstract symbols. The work is interdisciplinary: data from the neurosciences and cognitive psychology, and the perspectives of phenomenologists such as Merleau-Ponty, are combined with traditional philosophical analysis. The book includes a chapter on the nature of conscious qualitative experience and its neural correlates. (Series A)"