I would not call it ignorance. I would call it innocence. I have a niece who is eight years old and already the boys in her class have, on their cell phones, the kind of videos that in my childhood one could only get by going to the shadiest neighborhood in town, into a little hole-in-the-wall shop, back to the counter and whispering in the attendant's ear; and he would scowl, and say, "Oh, all right, you rotten perv-rt," and show you the way to the shelf in the cellar where that sort of thing was kept.

I'm pretty sure I was a happier schoolchild than she is, and I suspect the boys in my time were happier than her better-informed boy classmates are too.