Why is advanced technology always in everyone’s vision of the future? Most people think that this belief originated during the Renaissance.(The Dark) The renaissance was a festive celebration that gave people hope, and pushed for technology; today the idea has encouraged people to test the very limits of what is possible. Who encouraged this renaissance the most? Well, many people say it was Leonardo da Vinci; specifically his painting, the Mona Lisa. The most exotic detail of the painting is her smile. The trick behind Mona Lisa’s mysterious quality seems to allude to the fact that she looks like she’s smiling, until the person looks down at the mouth, and then it appears to frown. Leo’s greatest feat was the illusionary smile of the Mona Lisa. he started creating it in 1503 and kept this up until 1519. Da Vinci analyzed human faces, watching the tendons that shape the mouth and with the science of human emotions, And he created a masterpiece that calls to and moves with human interactions. This made Da Vinci a pioneer of interactive art, paving the way to virtual reality.”When seen directly, soft layers of shading around the mouth make the expression appear neutral.” When viewed in peripheral vision, however, the same brush strokes merge and give the impression of a subtle smile. This optical illusion has puzzled people around the world for many years leading them to wonder how he got two expressions on one face. Many have long been intrigued by Leonardo da Vinci’s Mona Lisa and the mystery behind the subject’s odd expression.”The study, conducted by neuroscientists at the University of Freiburg, paired a black-and-white version of the Mona Lisa with eight manipulated versions of the image in which the angle of the mouth had been adjusted so that four looked sadder and the others happier.” (scientists) The copies and original were shown to the people at random, and the original painting looked happy about 97 percent of the time. So the Mona Lisa appears to have been painted happy, but the angle changes when the person moves their eyes down, causing them to believe that she is neutral.