You are being overly pedantic and arguing for the sake of arguing. The rhetorical language you are using "might make more sense" and "easily verify" is demeaning and insulting and doesn't add to the discussion.

311 is the first course of the major and is also by the sample of folks in the reddit discussion also the hardest, covering the most advanced material in the shortest amount of time. It is a weeder course for the major. The 100 level classes are open to everyone.