I spent some time this week trawling through customer reviews on Amazon and Goodreads, in order to look for trends — paying particular attention to the scathing one-star reviews that inevitably warn all other readers against buying or reading the disliked book. Starred reviews affix to all works of literature a kind of efficiency rating, which over time average out to a meaningless valuation somewhere between the middle threes and the low fours. King Lear is valued at 3.87; Paradise Lost at 3.74; The Divine Comedy at 4.0. Although there is a great deal of variation in the five-star reviews, the one-star reviews are overwhelmingly alike, even across genres and styles of literature. I noticed the recurrence of three principal objections: (1) this book was confusing; (2) this book was boring; and (3) this book was badly written.