I just saw this post being almost closed and I saw the comment of @TalFishman which made me wondering what kind of Q&A site we were looking to create.
I haven't seen people using the RoR either, but is it a good enough reason to say that it is of topic. After all, the book it was taken from has been widely used (I've seen it on several desks) and the question is hence decent.
Are we looking to discard an over-simplistic questions in order to make the site only good for experts or do we want beginners to also be able to take part?
I guess beginners should still be welcome, and people who want to take part only in advanced discussion can filter the tags they're interested in.
I know that the FAQ says that you should be a professional or academics to ask a question, but I wonder if, especially at the beginning, we should allow such question, maybe with some strict tagging like "beginner"...