Everyone has seen them, those little marks in the sidewalk - footprints, cat tracks, leaves - left from someone or something pressing into wet concrete. Not the intentional ones, but the ones that seem so natural they could only have happened as the result of an accident – a fortuitous mishap. Leaving something interesting and often times beautiful in the place of something as commonplace as a city sidewalk; making an impression on the world, one imprint at a time.