As Ellen was running away from Espinoza she programmed her clothes to look like the brick wall that was behind her. Espinoza was able to see her because her hair was a different color then the brick wall.
"Relativity", 1953 (lithograph) by M.C. Escher This is perhaps Escher's best-known print on the theme of relativity. It also is a fine example of Escher's focus on unusual, and often conflicting, points of view.