The title of the new book “Womenomics” rather blatantly plays on the best-selling “Freakonomics,” but it’s an old trick. “Capitalizing on popular titles has a long pedigree in the publishing industry. A well-turned phrase can give birth to dozens of offspring. Edward Gibbon’s monumental ‘History of the Decline and Fall of the Roman Empire,’ first published in 1776, has inspired variants for more than two centuries.”