^ Some say one century, some say two. However, I've always been intrigued by the Incas, and I've ofen wondered how mystical really were they. If we were to believe a very respectable gentleman, Bill Sullivan, the Inca Empire should never have existed and that its only purpose was to change its faith: according to a profecy of Wirracocha Inca in 1432 the Empire will be destroyed as a result of heavy raining. Now, Pachacuti Inca, Wirracocha's son, rejected his father's profecy, but also accepted it. And thus started secret ceremonies like capa cocha during the winter solstice, which involved human sacrifice, especially children. They thought that the childer's soul was pure, and they were the only ones who could travel to their ancestors and convince them to change their faith. ( or so I've heard )