Karen Coyle (again) has written a great post on the subject of the Dewey Decimial Classification system, the Library of Congress Classification system, and Library of Congress Subject Headings.
She highlights what, to my view, is one of the major problems with all three of them : they are too complex for their own good. To structure classification and subject information in a straightforward, scalable manner is a daunting challenge. That we don’t have this structure is hurting us, and this will only get more prominent as time goes on.
