<human>:  Where does the title of the novel ‘Atlas Shrugged’ come from?
<bot>: Atlas Shrugged is a phrase that refers to the mythological Greek titan Atlas. Atlas was said to have carried the world on his shoulders for all of eternity. In Atlas Shrugged, the titan is replaced by a fictional character named John Galt. John Galt is a brilliant inventor who creates a new type of engine called the "Galt Engine" that makes the world’s oil and coal reserves useless. John Galt refuses to cooperate with the government and the economy collapses.