We could say we want the Web to reflect a vision of the world where everything is done democratically. To do that we get computers to talk with each other in such a way as to promote that ideal.
The Semantic Web is not a separate Web but an extension of the current one in which information is given well-defined meaning better enabling computers and people to work in cooperation.
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It appears that the media filters we carry in our heads are like computers: they've been forced to get faster in order to keep up with the demands our high-speed society puts on them.