Strained Expression Credit: Isaac Cordal on Diminutos (via WaybackMachine) What am I looking at? This is a test for an urban installation projecting shadows with the city lighting, done by Isaac Cordal. The strained expression on the face was not an accident. Here is another of his tests, posted on his WordPress site. More optical illusions:Grid Illusion ShirtHow many?Giant lampsMonkey SelfieSmile!Ghost BoatHow many pipes?Impossible woodwork