"Ask any archivist — or most anyone for that matter — what the importance of historical materials held by archives is and they will likely tell you that it is so large it is immeasurable, assuming that that is true and flattering. True, yes, to a degree, but definitely not flattering. In fact, that is one of the big problems with archives — that their value or impact is not directly measurable. We try to measure, and, despite the strength of the adverbs we use (very, extremely, critically, etc.), the measurement is soft because it lacks numbers."
http://www.avpreserve.com/blog/how-do-archives-measure-up/ (via missrumphiusproject)