Both the stories, Stone Garden and Ocean's Disc, do not directly change or influence the story. Meeting Medusa and Hermes not killing Telemachus does not influence the stories, but rather give different views and event that could have been left out of the Odyssey by Hoemer. O Brother Where Art Thou changes the characters, the plot, and setting. It is set in a more modern time, compared to the Odyssey, and as events and plot points that changed considerably to fit the new setting.