Man has always had the need to express himself artistically and visually. Going back 12,000 years, paintings inside caves depicted animals. Mammoths, deer-like creature in Europe, Guanacos in Argentina that hunter-gatherers stalked for food. Along with these images Cro-Magnon men and women used to take pigments of various colors and put them in their mouth. Then, place their hand against the wall and spit the pigment over the top leaving the silhouette (negative image) of the human hand painted on the wall. This is the world’s earliest stencil.