Amen. I'll add my own thought: the notions of "use case" and "functional requirement" are most powerful and meaningful when they are centered on _patron_ uses and requirements for functions exercised by _patrons_ (as opposed to _librarians_, using the term broadly: I mean to distinguish between those who are served and those who serve). It is not very clear to me by what process ideas about patron uses and requirements have informed the construction of Bibframe. --- A. Soroka The University of Virginia Library On Jun 25, 2014, at 10:34 AM, Karen Coyle <[log in to unmask]> wrote: > Nowhere, however, do a see a serious discussion in the library data creation community of use cases and functional requirements. (And, believe me, FRBR does not provide this.) Many of the elements that have been added to MARC over the years (after taking many hours of discussion within the MARC committee) rarely appear in actual library data. Yet more continue to be added. Where are we headed? Why? What is the result we seek?