Online research in philosophy

This collection of essays by eminent philosopher Fred Dretske brings together work on the theory of knowledge and philosophy of mind spanning thirty years. The two areas combine to lay the groundwork for a naturalistic philosophy of mind. The fifteen essays focus on perception, knowledge, and consciousness. Together, they show the interconnectedness of Dretske's work in epistemology and his more contemporary ideas on philosophy of mind, shedding light on the links which can be made between the two. The first section of the book argues the point that knowledge consists of beliefs with the right objective connection to facts; two essays discuss this conception of knowledge's implications for naturalism. The next section articulates a view of perception, attempting to distinguish conceptual states from phenomenal states. A naturalized philosophy of mind, and thus a naturalized epistemology, is articulated in the third section. This collection will be a valuable resource for a wide range of philosophers and their students, and will also be of interest to cognitive scientists, psychologists, and philosophers of biology.

In his book Naturalizing the Mind, Fred Dretske, among other things, gives what he thinks is a naturalist account of what he calls introspective knowledge.1 I shall not quarrel with his labels; I shall quarrel with what he tries to sell by using them. For him, introspective knowledge is “the mind’s direct knowledge of itself”,2 and he concentrates on knowledge of one’s own current mental occurrences, especially those which belong to the realm of sensory perception. An example he discusses is the knowledge somebody has who looks at something and sees it as blue, and thereby knows that he is, as Dretske puts it, “representing” it as blue. I shall stick to this example. Harvey is looking at my shirt, and he thereby comes to know that he is representing it as blue. Dretske wants to answer the question: What is really happening when Harvey acquires this piece of introspective knowledge? Let me first give, in a very rough way, what I take to be Dretske’s basic idea. Introspective knowledge is not acquired by anything like looking inside oneself. One looks in the same direction as one does when one is acquiring “extraspective” knowledge. Harvey doesn’t first look at my shirt, saying “Uhuh, this shirt looks blue, but now I’d like to find out how I am representing it”, and then turns to look at something else in order to find out what the colour is he is representing the shirt to have. Harvey only looks at the shirt, when he acquires this item of introspective knowledge. In looking at that shirt, he acquires all the information he needs for acquiring the knowledge about himself that he is representing it as blue. The eyes’ job is done. The rest is exploiting that very information, not acquiring any new information.

Fred Dretske asserts that the conscious or phenomenal experiences associated with our perceptual states—e.g. the qualitative or subjective features involved in visual or auditory states—are identical to properties that things have according to our representations of them. This is Dretske's version of the currently popular representational theory of consciousness . After explicating the core of Dretske's representational thesis, I offer two criticisms. I suggest that Dretske's view fails to apply to a broad range of mental phenomena that have rather distinctive subjective or qualitative features. I also suggest that Dretske's view, in identifying conscious experiences with features of our perceptual states, casts its aim too low. It deflates further than it should and, in consequence, fails to capture what are arguably some of the most important phenomena associated with our conscious lives.

No contemporary philosopher has tried harder to demystify the mind than Fred Dretske. But how to demystify it without eviscerating it? Can consciousness be explained? Many philosophers think that no matter how detailed and systematic our knowledge becomes of how the brain works and how it subserves mental functions, there will always remain an "explanatory gap." Call it a brute fact or call it a mystery, trying to explain consciousness, they think, is as futile as trying to explain why there is something rather than nothing. Dretske is not exercised by the explanatory gap-he'd rather exorcise it. He thinks we can get all the explanation we need by understanding what consciousness does. Consciousness is at bottom sensory experience and what it does, essentially, is to represent the world. Explaining consciousness, therefore, comes down to understanding the representational character of experience.

In this provocative book, Fred Dretske argues that to achieve an understanding of the mind it is not enough to understand the biological machinery by means of...