Rules for art
In perspective drawing, the viewer's eye-level is the horizon.
Piet Mondrian, p. 226
Does art even have any laws?
Painting is as much about learning how to see as it is about eating pencils (body proportions for human figure drawing). Drawing picture the autobiographical memory.
“In science, new knowledge builds on and refines the old. In art, according to common caricature, the new eclipses the old and rewrites all the rules”
Interpretation of art guidelines is subjective, once in a while we could bend the rules. Humor have a beautiful theoretical answer.