It is tempting to believe that we live in a time uniquely saturated with images. And indeed, the numbers are staggering: Instagrammers upload about 95 million photos and videos every day. A quarter of Americans use the app, and the vast majority of them are under 40. Because Instagram skews so much younger than Facebook or Twitter, it is where “tastemakers” and “influencers” now live online, and where their audiences spend hours each day making and absorbing visual content. But so much of what seems bleeding edge may well be old hat; the trends, behaviors, and modes of perception and living that so many op-ed columnists and TED-talk gurus attribute to smartphones and other technological advances are rooted in the much older aesthetic of the picturesque.