As it happens, we are quite well aware of the origin of a group belief. For instance, the history of baseball in the USA is a kind of contemporary myth whose origin, however, is not mysterious. In the US there is a place called the Hall of Fame dedicated to the great figures in baseball history. The spot can be found in Cooperstown, a small American town in the middle of New York state, that is otherwise totally unremarkable. Why was a building put up there to celebrate the sport that is so emblematic of the United States? Simply because the famous baseball is supposed to have been invented there by one Abner Doubleday in 1839. The date is precise but the myth of origins associated with it is no less so. In the early 19th century Doubleday is alleged to have interrupted some children playing marbles behind the shop belonging to the town's tailor. Then he is supposed to have started to teach them the rules of a new, more exciting game which he had just invented (if we adhere to this myth of origins) and which he proposed to call ‘baseball’. So he marked out a small-scale field on the ground: the first game of this typically American sport could now begin.