I was bitching about this to my mother last night, and she, having read at least a couple of my books in the AA stage, has experienced some of my margin notes. Her favorite was the succinct, "Fuckwit," which followed upon the correction of "well-lighted" to "well-lit" less than a page after a Hemingway reference. Then there was the one who removed my hyphens in words like "extra-long", making it "extralong", which, well, just WTF?
Mostly, copy editors are godsends. This one, in fact, pointed out at least five things that were very good catches and which I was happy to be able to fix. It's just sometimes, NGAAHGH!
Back on my head.