✖ Via
Josef Koudelka, “The Urge to See”, Prague, August 22, 1968.
“Visual techniques for depicting quantities include direct labels (for example, the numerically labeled grids of statistical graphics […]); encoding (color scales); and self-representating scales (objects of known size appearing in an image). Using all these methods, Josef Koudelka’s haunting and vehement photograph, The Urge to See, testifies to the empty streets during the 1968 Soviet invasion of Czechoslovakia that ended the Prague Spring of democratic reform. In the foreground, a watch documents the hour (direct label), as the shadows and gray light hint at the time of day (encoding), while in the distance Soviet tanks surround the national museum (self-representing scales, as many familiar objects in perspective demarcate the street and the photographer’s location)”. (Edward R. Tufte, Visual Explanations, Cheshire: Graphics Press LLC, 1997, p. 13).