Posted on 05/23/2003 3:59:51 PM PDT by unspun
| The Absurdity of 'Thinking in Language' | |||||
| This paper has been read to the University of Southern California philosophy group and the Boston 1972 meeting of the American Philosophical Association, as well as to the Houston meeting of the Southwestern Philosophical Society. Appeared in The Southwestern Journal of Philosophy, IV(1973), pp. 125-132. Numbers in "<>" refer to this journal. | |||||
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Only in my dreams. That is one of the qualitative differences between dreaming and waking consciousness -- my dreams, anyway, seem to have neither past nor future tense. I can sometimes, however, when waking, remember several minutes of a dream event.
The next logical step would be a theory regarding the bio-physical mechanism of function, which is always IMHO prejudiced by whether one sees the brain function as self-contained or as a communication apparatus for a non-spatial, non-temporal and non-corporeal consciousness.
I doubt if either prejudice could be falsified because achieving self awareness in strong A.I. would not ipso facto prove what is happening biologically or dimensionally. That is, a successful model does not the original make.
Penrose proceeds under the first prejudice theorizing the bio-physics of the brain as self-containing consciousness but prejudices that strong A.I. cannot be achieved because of non-computables. I dont really see that either depends on the other and dont understand why he would create such a snare. Im not sure about Cricks position on A.I. but he is so far prejudiced to self-containment that he says the soul is the manifestation of the bio-physics of the brain. I leave Walker up to Phaedrus or betty boop to summarize.
Fascinating musings, all of them!
Platonist that I am, I have the second prejudice which sees the brain as the communication apparatus for a non-spatial, non-temporal and non-corporeal consciousness. I look for support in my view indirectly from quantum field theory and string theory.
But I wasn't conscious that I'd been doing this kind of symbolic processing, until I woke up and recalled the dream. I've actually gained some insights in this way. I wish I knew how I could harness this potential for dream states at will! I'd have a reason to sleep more. :^)
But I merely report. I don't really know what this means.
Your's is the typical answer I get to that question. Instead of telling my what you mean by consciousness, you explain how you think it works. You begin:
My sole assumption is that the human mind is essentially finite state....
A little further along you use the term that is common to all such explanations that indicates that what is being talked about is not consciousness at all, "self-awareness."
Concsiousness may rightly be called, "awareness," but there is no necessity for that awareness be able to recognize a self, a thing impossible, in fact, until one has a fairly will developed set of concepts.
The consciousness I am talking about is the direct perception of things, like colors, and smells, vertigo, and music. My kitty is capable of this kind of consciousness, and my kitty does not even know she is a "self" much less is she aware of it.
I am not interested in "how it works," but what we mean when we use the word. When I see a patch of red, and you see a patch of red, we may agree to call it red, but the actual conscious experience each of us had might be entirely different. You might actually experience as red, what I experience as blue. It would make not difference, as long as we agreed on what to call it, what our subjective experience was.
That is the consciousness I am talking about. The actual experience of color, taste, smell, and touch for example. Two things about consciousness are very important, and completely ignored by those who believe it can be created. One is, it is totally subjective and whatever one experiences consciously cannot be demonstrated to anyone else. I can say, this taste just like strawberry, and you can taste it, and declare the same thing. And the particular esthers that constitute that "flavor" can be identified, and the portion of the brain that reacts to the particular olefactory data can be identified, but that actual experience of tasting strawberry cannot be identified or demonstrated by anyone to anyone else. Your taste of strawberry might by my taste of chocolate.
The other peculiarity of consciousness that is usually ignored is that there is only one. It is the same consciousness that tastes all flavors, hears all sounds, feels all sensations, and also thinks.
They are not separate events processed as bits of data at all. Take a musical chord, for example. It is comprised of several notes played simultaneously. There is no electrical, mathematical, or mechanical way to process sound (signal) information without "separating" (signal analysis) the components of the signal. Perception does just the opposite. It integrates an almost incomprehendable quantity of data into single percepts, and several percepts are simultaneously perceived. The same consciousness that hears the music, tastes the coke, and reads the book at the same time, not as separate events in a processor, but a single thing.
That is what I mean by consciousness. Even if it were possible to produce consciousness at the lowest possible level, it could never be known. Because, even if a "machine" did it, it would still be non-demonstrable.
Hank
You are wrong. These very things are dealt with in the same conceptual framework I already put forth. If one understands that framework, one also sees where this trivially falls out of it.
You see, my answer doesn't just "explain how it works", it also defines what it is. Maybe you don't see that, but a lucid and complete explanation of the matter is a fairly lengthy exposition. In the face of limited time to talk about it here, I throw down the important points and hope that people grok it enough to derive the rest. After a number of years discussing things like this, I can say with certainty that this is rarely the case.
Another problem in these discussions (more others than you actually), is that many people involved are walking collections of other people's opinion that they defer to. This is an insubstantial basis of argumentation, and while the points sound good (because someone very smart created them), it is obvious to me at least that they people using those points don't truly understand the full scope of those points.
Hank, you are out of your depth here. As a point of fact, mammalian hearing does the rough equivalent of a Fourier transform on the front-end, and it is the spectral components that are individually sent (in parallel) over the nerves to the aural cortex in the brain. Human brains only really process phase (between ears) and magnitude on the spectral data. (This is also how cochlear implants work. They replace the part of the body that does the spectral separation by doing an electronic spectral transform and feeding the respective spectral components to the individual nerves directly.)
It is an interesting point of trivia that bats, dolphins, dogs, humans, and all other mammals have the exact same hearing hardware. The only difference is the quantity and quality of processing that occurs in their respective aural cortices. As a second point of trivia, humans can do moderately competent echo-location, but our species does not fully exploit it due to reliance on our strong visual capabilities.
Perception does just the opposite. It integrates an almost incomprehendable quantity of data into single percepts, and several percepts are simultaneously perceived. The same consciousness that hears the music, tastes the coke, and reads the book at the same time, not as separate events in a processor, but a single thing.
Definitely wrong conceptually. Our brain does not receive integrated data and I don't know of anybody working in neural sciences that would subscribe to this. It is well-known that our sensory front-ends transform the signal into very simple linear data, with more complex patterns being inferred from the large quantity of simple data streams.
Your sense of complex things is actually your brain selectively integrating a large quantity of very simple data streams. The front-end "de-integrates" sensory data into a bunch of one-dimensional spectral streams that get sent to the brain, the brain then discards some of the data and processes it for higher-order patterns in the respective cortices, and the brain re-integrates what is left in a continuously variable fashion depending on the circumstances. It is a lossy but very efficient process. It is also how brains process their sensory data.
Well sure, just like a radio tuner, and it's analog too, but that has nothing at all to do with what I am talking about.
This is my last shot. Assuming you understand how the retina's cones work, you do understand that the nerve "data" that responds to magneta is only data. But what you see consciously, that color you call "magenta" (or purplish pink) [think of how that color looks, not the processing that is going on] what is that. Nothing you have described even approximates what you or I mean when we say, "this is blue" and are thinking of what the color is to our conscious perception.
It is the actual conscious experience you have omitted in everything you have described, because it cannot be described. But you know when you see blue, whether because you are looking at something blue, or pressing on your eyeballs, or looking at a white wall after looking for a long time at an orange spot, or only imagining the color, that color as you subjectively consciously experience it cannot be "explained" by any physical event of any kind.
(There is nothing mystical about this. It is merely an aspect of the nature of life itself, which would require another discussion altogether.)
I suspect that you may not be able to comprehend what I am referring to. I have almost reached the place in my life where I believe the behaviorists are correct about some large portion of humanity and that they really are not conscious in the same way as others, and that they are only behaving (and speaking) as though they were.
I mean, maybe you really do not have a direct conscious experience of the color blue. That would certainly explain why what I am talking about would be a mystery to you, and would certainly not be your fault. On the other hand, if you really do have the conscious experience, you could not possibly mistake it for any physical phenomenon, because, even if it were one, why and how would it be a blue one?
Hank
Actually, it is related and I understand precisely what you are talking about far better than you imagine, so bear with me. There are so many threads going right now I don't know whether I explained the fundamentals required to get from where I was to where you are on this particular thread, but I have put all the pieces out there in some fashion. The pieces just have to be put together. I don't want to spend too much time on this because I really DO have a lot of work to do. :-)
"Blueness" corresponds to a unique state in the context of our minds (obvious corollary: there is no objective concept of "blueness"). However, there is an equivalent state in any reasonably good finite state implementation of a mind, whether in silicon or in biological wetware. Of interest is that the experience is essentially unique to every mind, ignoring the trivial cases, which aren't conscious in any meaningful sense anyway. One could argue that humans are slightly more complicated in this regard because we are born with color biasing ("biasing" being another topic that I definitely haven't discussed, but which is related to both emotions and goal systems) whereas an artificial system would develop biasing without the paleo bootstrap code (the bootstrap not being necessary in the theoretical case, but very useful in nature).
I suspect that you may not be able to comprehend what I am referring to.
You are talking about qualia. It is a very old argument for me, one that I have hammered out with many bright minds for years, and it never fails to pop up because people just love the topic and most haven't seen a really rigorous discussion of it. The short answer is that qualia is a necessary property of any FSM (but not infinite systems), but doesn't even become worth studying until you have some semblence of consciousness. Even then, qualia is not particularly meaningful or important. Rather it is a factor that has to be taken into consideration because it causes biasing (or perhaps IS a form of biasing) that can impact strict rationality in a system. It is an artifact of how data interacts with the current state of your mind, such that you can't observe something without the act of observation biasing your experience of that thing.
No, I'm pretty sure I understand precisely what qualia is and therefore why it is important. The difference is that the mystery of it disappeared a while ago for me so I don't think about it. I consider what you are talking about to be a side-effect, whereas I am more concerned with the the fundamental things that create and allow for that side-effect in the first place.
Concerning the issue Hank raised, the different subjective conscious reactions we would surely have walking through an art museum is an example that sticks in my mind.
I realize that you do not consider qualia to be particularly meaningful, important or mysterious because your endeavor is in the front-end and qualia ought to accrue along the way.
However, to the rest of us out here the subject is rather engaging, so for other Freepers and Lurkers who may be interested in the subject of qualia heres a good starting point and an excerpt:
Feelings and experiences vary widely. For example, I run my fingers over sandpaper, smell a skunk, feel a sharp pain in my finger, seem to see bright purple, become extremely angry. In each of these cases, I am the subject of a mental state with a very distinctive subjective character. There is something it is like for me to undergo each state, some phenomenology that it has. Philosophers often use the term qualia (singular quale) to refer to the introspectively accessible, phenomenal aspects of our mental lives. In this standard, broad sense of the term, it is difficult to deny that there are qualia. Disagreement typically centers on which mental states have qualia, whether qualia are intrinsic qualities of their bearers, and how qualia relate to the physical world both inside and outside the head. The status of qualia is hotly debated in philosophy largely because it is central to a proper understanding of the nature of consciousness. Qualia are at the very heart of the mind-body problem . Representationalists about qualia are typically also externalists about representational content. On this view, what a given experience represents is metaphysically determined at least, in part, by factors in the external environment. Thus, it is usually held, microphysical twins can differ with respect to the representational contents of their experiences. If these differences in content are of the right sort then, according to the wide representationalist, microphysical twins cannot fail to differ with respect to the phenomenal character of their experiences. What makes for a difference in representational content in microphysical duplicates is some external difference, some connection between the subjects and items in their respective environments. The generic connection is sometimes called tracking, though there is no general agreement as to in what exactly tracking consists.
On wide representationalism, qualia (like meanings) ain't in the head. The classic, Cartesian-based picture of experience and its relation to the world is thus turned upside down. Qualia are not intrinsic qualities of inner ideas of which their subjects are directly aware, qualities that are necessarily shared by internal duplicates however different their environments may be. Rather, they are representational contents certain inner states possess, contents whose nature is fixed at least in part by certain external relations between individuals and their environments.
Representationalism, as I have presented it so far, is an identity thesis with respect to qualia: qualia are supposedly one and the same as certain representational contents. Sometimes it is held instead that qualia are one and the same as certain representational properties of experiences; and sometimes it is is argued that these representational properties are themselves irreducible (Siewert 1998). There is also a weaker version of representationalism, according to which it is metaphysically necessary that experiences exactly alike with respect to their representational contents are exactly alike with respect to their qualia. Obviously, this supervenience thesis leaves open the further question as to the essential nature of qualia
I have no proof either way, but intuitively, base on living mosst of my life with cats and dogs, I think you are quite wrong about this. What differs between animal consciousness and human consciousness is not self-awareness of the present, but the ability to place oneself between the past and the future. This seems directly related to language and syntax functions, and seems to be diminished in people with normal brains who do not learn language.
I've lived most of my life with cats and dogs as well (and many other animals -- I grew up way out in the sticks), so we're even here. I think your assertion here is stretched past the breaking point because it is based on a really superficial analysis of what the internal mental state of animals is or isn't.
I would anecdotally assert that at least some smarter domesticated animals such as cats and dogs show clear evidence of having a sense of history and the past. It is easy to come up with examples of this if you've owned animals. To give an example, when I was very young we got two kittens (siblings actually) that lived with us out in the country and were apparently very close to each other their entire lives. Anyway, at the age of 14 one of them died of a stroke and was buried out by one of the fields. His brother went to that spot and cried for days. It permanently changed the personality of the remaining cat, who would frequently go out and just sit on the spot where we had buried his brother for years until the day my parents moved. Those two cats were about the smartest we ever owned, but there were many cases where it was apparent that these two had both quite a long memory and a sense of history. They weren't people, but they weren't automatons either. (Incidentally, the other brother died at the age of 21 or 22, and amazingly old age for any cat.)
As for the future, I would assert that if you look at the human race just by observing their behaviors and without any communication or real context, there is little evidence that we engage in thought about the future beyond the foraging, family-building, nesting, and other behaviors that other higher animals exhibit. I am quite sure we actually do think deeper thoughts about the future than other animals, but it is not particularly evident solely in our behavior. I would say that most higher animals clearly have some sense of the future, though obviously not anything close to what humans are capable of. I would agree that the lack of complex language ability seriously limits their capacity in this regard.
But to assert that animals do or don't have any cognizance of the past or future in some kind of boolean sense doesn't seem to hold water, or at the very least is not particularly supportable. I would agree that they have much less capacity than humans in this regard, but it is a gradient, not a boolean proposition.
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