The reason a person who believes he sees a woman when in reality he is looking at a gourd is called crazy is because this is something beyond usual experience. However, when a person thinks his wife, who is enjoyed by many, to be an ever-faithful Penelope, he is not called insane at all, because people know that this is a common thing in marriage.
According to the book of Genesis, God created Eve from one of Adam’s ribs. As a result, Judeo-Christian tradition long held that men had one fewer rib than women. Despite the abundance of available evidence to the contrary, that belief survived for some fifteen hundred years, until the Flemish anatomist Andreas Vesalius, a pioneer of modern anatomy and a champion of medical dissection, finally showed otherwise.