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Jeff Greif wrote: > The unfortunate problem with RDDL and all the alternatives except (1) is > that you cannot tell without looking whether there will be something at an > NS URI, and if there is, whether you need to know about it. Suppose you simply decide never to dereference a URI regardless of what it looks like. How does the existence of a document which _can_ be dereferenced affect your life? As has already been said, you can always use google. Indeed a tenet of the RDF framework is that URIs are opaque. One derives the properties of a resource by what is said "about" the resource, not by dereferencing its URI. One never _has_ to dereference a URI to use RDF. Nor does one have to dereference a namespace URI _ever_ if all one want to do is use XML namespaces as a way to disambiguate element names. What could you "need to know about"? Jonathan
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