Shriram Krishnamurthi wrote at 03/05/2011 01:35 PM:
Best summary of the problem with the Semantic Web: "People are lazy and they lie". (I heard that from Peter Norvig, who was Baraphrasing Cory Doctorow.)
My original thesis topic (circa '98) intended to address these problems. I don't recall anyone saying Semantic Web then, but logical reasoning/inference and semantic information retrieval from the Web was on a few people's minds. (Sadly, a key committee member could not be convinced that this was worth pursuing, and I had to mothball it.)
Also, in addition to the ambiguous "people lie," I'd add "ontological/knowledge engineering is hard." I think that malice and incompetence should be considered two separate problems that don't necessarily have exactly the same solution.
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