Before photography went digital and camera phones accompanied people most everywhere, Pierre Bourdieu observed in 1965 that photography had become a "middle-brow art". "How and why," he asked, "is the practice of photography predisposed to a diffusion so wide that there are few households, at least in towns, which do not possess a camera?". Novel at the time, the question has been superseded today. Estimates indicate that 1.27 trillion new photographs will be taken in 2017. That amounts to an ambient (...) symphony of over forty thousand clicking shutters per second. That means the human population will take three times more photographs in one year than there are stars in the Milky Way.... (shrink)