alter - dewey being tree like - these new identifiers allow us to cross category.

look at delicious tag habits for ex. - we tag according to the meaning we are trying to construct for ourselves as well as sharing w/ others

I think computers will replace books in school libraries. So I guess that means tagging will replace the headings. IMHO.

I believe the books will stay in the libraries, just more for recreational learning. I see research going online databases

Tagging is really cool. Love to tag in flickr and check mindset of others for matching tags