Someone’s finally done it, and it’s our own Emily St. John Mandel, to boot: over at FiveThirtyEight, Mandel crunches the numbers on books with the word “girl” in the title, concluding that we may not have reached peak girl yet. (Also 65% of the time, the girl in question is actually a woman.) Nonetheless, if you’re looking to go rogue, check out our guide about how to title every book you ever write.