It's been a while since I've worked in a DDC library, so I don't remember many specific numbers. But I've retained quite a bit of LC.
The librarians should know better than to reveal their contempt to patrons. That's basic. It's occasionally understandable, but concealing it is essential professional practice.
That said, patrons often ask to be pointed in the general direction of things that don't exist in a library collection. Ask a practical matter, "Where is your science fiction section?" can't be answered in an LC library. But a good reference librarian knows how to handle these situations.
http://xkcd.com/479/
http://www.equestriadaily.com/2011/09/how-to-submit-to-equestria-daily.html
The bakery went out of business.
Still, I had never heard of the term "catty corner" until I was 27.
(Though the latter may surprise some readers.)
The librarians should know better than to reveal their contempt to patrons. That's basic. It's occasionally understandable, but concealing it is essential professional practice.
That said, patrons often ask to be pointed in the general direction of things that don't exist in a library collection. Ask a practical matter, "Where is your science fiction section?" can't be answered in an LC library. But a good reference librarian knows how to handle these situations.
Bring it.