We linger unregenerately in Plato’s cave, still reveling, our age-old habit, in mere image of the truth. But being educated by photographs isn’t like being educated by older, more crafted images. For one thing, there are a great many more images around claiming our attention. Daguerre started the inventory, with faces, and since then just about everything has been photographed; or so it seems. This very instability of the photographing eye changes the terms of confinement in the cave, our world. In teaching us a new visual code, photographs alter and enlarge our notions of what is worth looking at and what we have a right to observe. The most grandiose result of the photographic enterprise is to give us the sense that we can hold the whole world in our heads – as anthology of images.