Lately I've been skimming Cataloging Cultural Objects. So different from AACR2. We think in terms of author, title and subject access so easily. These folks are dealing with items with none of those properties. What is the title of a chair? Who is the author of that chair if the manufacturer is unknown? What is the chair about? I think every intro to cataloging course could benefit from doing a very brief comparison between CCO and AACR. The differences are enlightening.