which stain does not belong to the group?

Coincidence Photoseries with questions • Studium Generale Vlaardingen (NL) • 2004

in which mood are people when they decide to spit out their gum?

how precise can people determine the place where their gum comes down?

where will the next chewing gum land?

is there a reason only one of these tiles has a gum stain?

would you say that these gum stains form a beautiful composition?

is there a connection between these stains?