With introduction and the addition of a cheat sheet whose purpose it to enable you to get the gist of what is going on and can also be used to help you find roughly where that part is that you need for your assignment that's probably due in about 20 minutes and you can't afford another bad grade because you are about tofail this course that will allow you to become anything you want to be, so long as it is an English teacher or a jaded librarian. The idea is to offer a little cynicism to all that genius and to give you a few laughs while you get to experience some of the ugliest machinations ever put to parchment.