Showing posts with label Semantic Web. Show all posts
Showing posts with label Semantic Web. Show all posts

Wednesday, June 10, 2009

August 08, 2006: Embracing Chaos

I would like to continue my reflections on Isaiah Berlin's Crooked Timber of Humanity, briefly alluded to yesterday. This time I would like to explore his idea that the conception of knowledge that came out of the Romantic Sturm und Drang movement in Germany is grounded in chaos, rather than order. Here is a relevant passage from Berlin (not as terse and therefore rather more typical than the one cited yesterday):
For Friedrich Schlegel and Novalis, for Wackenroder and Tieck and Chamisso, above all for E. T. A. Hoffmann, the tidy regularities of daily life are but a curtain to conceal the terrifying spectacle of true reality, which has no structure, but is a wild whirlpool, a perpetual tourbillon of the creative spirit which no system can capture: life and motion cannot be represented by immobile, lifeless concepts, nor the infinite and unbounded by the finite and the fixed. A finished work of art, a systematic treatise, are attempts to freeze the flowing stream of life; only fragments, intimations, broken glimpses can begin to convey the perpetual movement of reality. The prophet of Strum und Drang, Hamann, had said that the practical man was a somnambulist, secure and successful because he was blind; if he could see, he would go mad, for nature is ‘a wild dance’, and the irregulars of life – outlaws, beggars, vagabonds, the visionary, the sick, the abnormal – are closer to it than French philosophers, officials, scientists, sensible men, pillars of the enlightened bureaucracy: ‘The tree of knowledge has robbed us of the tree of life.’ The early German Romantic plays and novels are inspired by an attempt to expose the concept of a stable, intelligible structure of reality which calm observers describe, classify, dissect, predict, as a sham and a delusion, a mere curtain of appearances designed to protect those not sensitive or brave enough to face the truth from the terrifying chaos beneath the false order of bourgeois existence.
In twentieth-century America this spirit may best have been captured by Henry Miller (yes!), who, in Tropic of Capricorn, wrote, "Confusion is a word we have invented for an order which is not understood."

I have to insert a digression here. My first teaching job was at the Technion in Haifa. I began in the fall of 1971, and the first course I had to teach was in data structures. At the time the only source was Fundamental Algorithms, the first volume of Knuth's uncompleted project, Art of Computer Programming. This book was both too expensive and too locked into Knuth's own invented machine language to serve particularly well as a textbook, so I prepared my own notes to distribute to the students. However, I was inspired by Knuth's indulgence in literary quotations (as were many of my contemporaries); so I could not resist showing off my reading background. Therefore, I began my notes with the above quotation from Tropic of Capricorn, a book that did a lot to help me maintain my personal sense of identity and sanity during my first experience as an expatriate!

I think it is important to appreciate the significance of the Miller-Berlin perspective because we are seeing the anarchic nature of the Internet coming into confrontation with our "inescapable universal" (to borrow a phrase from Max Weber) fixation on bureaucratic organizational forms in the worlds of both work and government. After all, the Internet is probably the only successful anarchy the world has seen since the Ancient Greeks took it upon themselves to invent the concepts of government and politics; but we are so terrified by the prospect of "an order which is not understood" that we desperately try to impose it on the Internet, whether through the Semantic Web, "neutrality" regulation, or God-knows-what-else.

This is not to say that anarchy is not scary. Berlin is right: It takes bravery "to face the truth from the terrifying chaos beneath the false order of bourgeois existence." If it is any help, we can bear in mind the principle that the order is not so much false as it is subjective. One of the things that Jeff Hawkins did not seem to get in all of his waxing on intelligence is that our brains have a natural inclination to impose order on their stimuli. Gerald Edelman called this perceptual categorization and made it the foundation of his own attempts to model the nature of intelligence (which he has tried to substantiate with studies of "wet brain" behavior). What we fear, then, is not that we cannot grasp order in the midst of the confusion but that the order that I grasp may not (probably will not) be the same order that you grasp. Now back in the Sturm und Drang days, Fichte tried to teach us that we should not fear this, that it is through this I-you opposition that each of us develops our own self-awareness (and, while Edelman does not explicitly invoke Fichte, his model of consciousness is definitely sympathetic to Fichte's philosophy). Thus, we can understand the confusion; and, if we are bold enough to let our understanding confront the understandings of others, then we can only benefit from the growth of our own self-awareness. Given all the different ways in which both government and media seem hell-bent on cultivating a culture of fear, the last thing we need to do is waste our cycles on fear of anarchy.

One final point: The way in which Berlin characterizes the Strum und Drang conception of reality is very much verb-based, rather than noun-based. On the other hand the whole "culture of organization," which has invaded our educational system as much as the worlds of business and government, is, by its very nature, noun-based. We have to get beyond the myth we have cultivated that reasoning can only take place when we "freeze the flowing stream of life." Berlin demonstrated how to get beyond the myth in his "Political Judgement" essay. Perhaps it is time to unravel (with "burning patience," as Neruda put it) all of his elaborate sentence constructions and see what those sentences are actually structuring!

July 19, 2006: Two Cheers for Google (or Peter Norvig)!

Candace Lombardi provided a nice account of the exchange between Tim Berners-Lee and Peter Norvig (Google Director of Search) in today's CNET News.com. This is a case where I have to side with the Google supporters' comments. Here is my elaboration on one of those comments, edited to include a hyperlink, which CNET would not let me include:

What we are really talking about here is human nature; but that is still only part of the story. What most of the techno-centric community does not understand is that every technology artifact is based in three "worlds:" the objective, the subjective, and the social. (This is a generalization of Habermas' observation that all personal interactions take place in those three worlds simultaneously.) Berners-Lee would really like the World Wide Web to be strictly an artifact of the objective world, which may be all right if you are trying to write a doctoral thesis in artificial intelligence but does not wash if the Web lies at the heart of your business model. Norvig's rebuttal addressed issues in both the subjective and social worlds, and I doubt that anyone would dispute the fact that Google's success has as much to do with their successful management (even if intuitive) of the social world as with their efforts to build the best artifacts according to criteria of the objective world.

However, beyond the subjective and social flaws that Norvig identified, the fact is that the "semantic" infrastructure of the "Semantic Web" is equally flawed. As I have tried to argue, you cannot have an ontology that is not grounded in phenomenology. In Semantic Web language, this means that the objective nature of the RDF (Resource Description Framework) will always fall short of the demands of the subjective and social worlds.

So isn't history just repeating itself? Ten years ago we had the SGML advocates who were trying to push for the formal structuring of all content. The limited amount of support for that vision was quickly blown away by the advent of HTML, and the resulting rush to search engine technology demonstrated that structure was not as important as the SGML folks wanted to believe. Guess what? NOW it is not as important as the Semantic Web advocates want to believe!

Saturday, June 6, 2009

June 11, 2006: Hermeneutics 101

Having provided introductory outlines to phenomenology and Habermas' theory of communicative action, I figure I ought to do the same for hermeneutics, since I feel that this is another non-technical discipline that offers some critical "survival skills" for the Internet age. I must confess that I was led into this one by a conversation I had with a friend at PARC who made the pronouncement that it was time for us to stop wasting time on concepts that really had nothing to contribute, like hermeneutics. So if this particular introduction reads something like an apology, then that can be attributed to my personal past history!

Actually, one of the difficulties in introducing the concept of hermeneutics is that it seems to have meant many different things to different people. Therefore, I should being by stating up front that my own primary influence comes from the writings of Paul Ricœur, whose book on metaphor I discovered on a business trip to Basel and has had me hooked ever since. What has most interested me about Ricœur is that he took the traditional view of hermeneutics, as the study of methods for interpreting texts, and generalized it to the interpretation of meaningful actions. This puts him on the same field of interest as Habermas, who has had his own prolonged debate with Gadamer over hermeneutics. John Thompson's Critical Hermeneutics focuses explicitly in the intellectual relationship between Ricœur's phenomenological stance and Habermas' foundation in social theory (anchoring them both in Wittgenstein's ordinary language philosophy). This is what I mean when I say that any attempt to get a sense of the nature of hermeneutics quickly leads you into a vast Web of opposing opinions!

Ricœur's approach is basically a dialectical one. He begins with the exploration of two opposing concepts: explanation and understanding. From his point of view, "explanation" means "structural explanation," a syntactic perspective that can be generalized beyond the sentence to the broader scale of a paragraph or an entire work (if not an entire corpus). "Understanding," on the other hand, is concerned with interpretation and thus involves a semantic perspective. The opposition comes from the fact that, often, you cannot determine the syntactic structure of the text unless you know what it is trying to say; and you cannot interpret the text without knowing how it has been structured. (This was discovered "in the trenches" when Terry Winograd was doing his pioneering doctoral research on a computer system that understood natural language.) Ricœur proposed that hermenutic interpretation could only succeed through a Hegelian (Fichtean?) style synthesis of these two concepts, dealing with explanation and understanding as interrelated processes, each of which informs the other (which is one of the most important features of Winograd's SHRDLU system). This is why I clipped in the above diagram (which I discovered through an A9 image search, back when A9 was still using Google for image searches).

Why is this important? The primary reason is that computer science (or information technology) still tends to assume that intepretation is concerned strictly with the denotation of symbol structures, which is fine if you are writing a compiler or a system that interprets database queries but (as Winograd discovered) starts to break down when you more from formal languages to natural ones. So this takes us back to the debate over what we can realistically expect from the Semantic Web and whether or not we can call it "semantic" in any way that makes sense the the real world of how we all use the Internet (i.e. the world in which the Internet is used by ordinary people trying to get things done, for business or pleasure, as opposed to computer science students or professionals).

It is nice to see that Ricœur seems to have had a healthy appreciation of the pioneering work of C. S. Peirce on the interpretation of symbol structures. It is nice to reflect that, in one of his early essays ("Some Consequences of the Four Incapacities"), Peirce came up with the wonderful observation that "men and words reciprocally educate each other." I think this gets to the heart of the synthesis upon which Ricœur's approach to hermeneutics is based, and I think we can do worse than live by that insight.