 There was greater fluidity than ever before as a result of the massively increased wealth among the middle class as a result of the Industrial Revolution, and this fluidity allowed the courtesan to flourish in the Regency era.The events portrayed in "Vanity Fair" are described by narration, but the narrator is uninterested in Sharp's thoughts, only her actions.For example, when she goes to bed wondering whether Jos will call on her the next morning, the very next sentence informs us that he did.