David Weinberger Good Quotations

If explicit metadata is a real problem, it raises problems that just can't be solved. It's not that we're not good at it; it's the problems cannot be solved because we're not going to agree about these deep questions of how we organize.

In the university library, we know when a book has been used in a class or put on reserve... or while it was out, did somebody call it back in. It turns out to be a pretty good indicator of how relevant the work is at that time.