In "The Lightning Thief" by Rick Riordan, a moment occurs where Annabeth reflects on the River Styx, highlighting her feelings about its state. Charon, the ferryman, interjects, providing a sardonic commentary on the river's condition. He notes that for centuries, humans have discarded their hopes, dreams, and unfulfilled wishes into the river, leading to its pollution. Charon's perspective serves as a critique of humanity's careless disposal of intangible desires, equating it to poor waste management. This exchange underscores the theme of consequence in the human experience, illustrating how our actions can impact even the realms beyond life.