I'm on version 18 or something of the short note. As I mentioned before, nearly every time I send Sam a new version, he writes back with things I should add. When I finished his last round of suggestions a few weeks ago, I really thought that was the end. What more could he possibly suggest that hasn't come up already?
Today he sent another suggestion for incorporating some data that would be useful if we had it for everything we're studying, but we don't, and I don't see a good way to incorporate it. I. just. want. to. be. finished. So I'm writing an email to explain why I don't think we should add those data (and suggest that if he does, that he add it himself since he's an author too). Gah.