The arc is one of the first primitive evolved tools with which men measured themselves in the relationship with the external world. Since it was used for a long time to hunt and to make war, it was, for sure, one of the fundamental inventions. It was developed in different forms, even if really similar between them and in distant places of the planet. The first representation of an arc is identified in an about thirty thousand years ago graffiti. Since the Paleolithic men used this tool as a hunting system to strike preys being able to maintain a safety distance. Learning its techniques is not simple, but it is surely fascinating.