I don't like being lectured. Never have. And that's exactly how I feel when someone uses the second person "you" (or worse, you "understood").
You know what I mean, right? When you're reading along and suddenly out of the blue, the writer says "When you read Hawthorne, you know he will use obvious symbols" or something like that. Then you can feel your hackles start to rise and you grab that pen of some other color than red, and you circle every occurrence of "you." You emphatically write in the margin, "Avoid using second person in formal writing."
(See what I did? I used it. As an illustration only, mind you...)
So imagine my surprise when I turn to the story I'm teaching this week (which is on the syllabus I borrowed in large part from our resident professor and have fallen behind in re-planning) and it's written in the imperative. The "you, understood" second person.
Talk about feeling like nails grating on a chalkboard. EEEEEEEEEEEEEEE!
Since I've gotten onto my students already for using that in their essays, I can't wait to hear what they have to say about this story.