Imagine: a New York Times without articles about retirement or a Health section, no Gail Collins, and Paul Krugman wearing a bandana and a cool pair of shades. Endless trend pieces about the death of chivalry and instead of a Metro section, just something called BKLN. The Style section grows three times as large, and covers the same young literary darlings multiple times per edition ("They're young, Ivy-bred, have read Baudrillard, and love cigarettes. Totally boss.")
If there is one thing that brings joy to my heart, it is charting the growth of newly invented genres. You can argue over whether trend pieces about "new adult" fiction or "baby boomer" literature are describing truly original developments or ginned-up marketing terms with no relation to measurable changes in book-buying practices (in fact, our very own Katie Baker has already done so in a very neat analysis). But at a certain point the distinction becomes meaningless; talk about "new adult" fiction long enough and Amazon will eventually dedicate a department to it.