Abstract
Vanda Broughton, editor with Jack Mills of BC2, describes in this interview the story of Bliss Classification revision after 1977 and recent evolutions of BC2 scheme and indexing tools in web context (thesauri, classifications, ontologies, taxonomies...). Thesaurus and classification schemes are regarded as similar kinds of tool, because facet analysis principles could be used to construct both types of vocabulary. Broughton suggests that many computer scientists are now far more aware of the theoretical issues related to good information architecture and librarians should speak to them in their own language, maintaining a bridge between intellectual, practical and technical aspects of cataloguing and indexing, and ensuring that all these aspects are kept in balance. Even in digital and hybrid libraries the principles of indexing and of constructing vocabularies remain true, and although the environment is very different, the fundamental theory that was developed in the mid twentieth century continues to provide us with a very sound basis for managing information.