This is one of the most entertaining threads I have read on Autocat! I would just like to point out that *when* (not if) everything becomes digital, any book will be able to have multiple class numbers.
Naturally, in Web2.0 catalogs, our users will be able to add their tags, arrange things and so on, and in these sorts of areas of political and moral divide, it may be educational to see how the general public tags these materials. I looked it up on LibraryThing and found the tags rather tame so far:
but the conversations have a bit more:
The tags at amazon.com are more partisan, some I would not want to repeat on this list:
At amazonUK, there is much less:
At amazonCanada, there is some more partisanship,
but here is a cataloging problem: most user tags are associated with differing versions that haven’t been released yet, e.g. the CD:
The reason I bring this up is because I feel that whatever catalogs we come up with, we are witnessing a new function of the catalog. Catalogers will probably be the ones to deal with managing this somehow, both from the point of view of relevance and civility, also to make sure that tags permeate to all the different versions, all the while balancing this with the concerns
of users and free speech.
I have no idea how to solve any of this, just pointing out some considerations as we march into a new world of information.