With detailed critiques, Peter Slezak shows that Searle’s Chinese Room Argument, Kripke’s theory of proper names, Davidson’s semantics of natural language and Kosslyn’s theory of visual imagery rely on what is intuitively meaningful to us rather than what follows from the theory. Slezak offers a novel solution to the elusive logic of the Cogito argument, showing it to be akin to the Liar Paradox. Since Descartes’ perplexity is our own, this shows how the subjective certainty of consciousness and the mind-body problem can arise for a physical system. An intelligent computer would think that it isn’t one.
Peter Slezak is honorary associate professor of philosophy at the University of New South Wales.