This was a fun and fluffy book - part memoir, part history, part art. It talks about the author's experience diagramming sentences (which she considered a fun part of the school day) and her job as an editor. She talks about the history of sentence diagramming and what some writers (I can only remember Gertrude Stein) have said about grammar and sentence diagramming and whether or not it was likely that this or that author had learned it in school (based on years of popularity of diagramming and years the author was in grammar school). While she considers sentence diagramming a fun and worthwhile task, her opinion, and the seemingly unanimous opinion of the people whose opinions she reports, is that learning to diagram sentences does not improve your writing. Also, homeschoolers are mentioned as the main people who you'll find online talking about sentence diagramming. (Yay us!) The book is full of diagrammed sentences, some of them quite complex and lengthy.