In the visual arts, for example, we speak of clean lines, clean edges, muddy color, neat construction, and cluttered space. Of course, the lines in a visual work are not literally clean: literal cleanliness has to do with the features of the work qua physical object. A painting is literally clean if it is free of dirt, dust, food particles, and such. Thomas Leddy
In 2014 I asked friends and family to sweep their kitchen floors and give me their dirt. Below are excerpts from the Dirt World exhibition and accompanying book Other people's dirt that accompanied the show.