“Print-gallery” by Escher is a correct Yin-Yang Symbol!!!

That picture is quiete amazing indeed. I was looking at a movie on Varela (one of the inventors of the autopoiesis concept, recently died of cancer). He loved Esher, and especially this picture as in it you cannot divide the observer by the observer. He was a smart Scientist, and a deep Buddhist (at least according to his interview) Very near the Dalai Lama, who was present also for some interviews in the movie. All very interesting. The movie is called ‘what is life’, and is essentially a series of interviews