I am willing to admit that I remain skeptical about the “one big pile” approach to next generation catalogs that is sweeping the library automation world. While I don’t agree that advanced relevance ranking techniques are ineffective on bibliographic records (go look, there is no literature that I can find on this topic…there’s tons on full-text, but nothing on surrogate record relevance), I wonder what happens when the catalog becomes more than it used to be. If a relevance algorithm is based on whether or not a library holds a title, what happens when an article is thrown in the …