Why do they leave the kitchen sink running when they gho to bed in the last night of the world written by Ray Bradbury?

In Ray Bradbury's story, the characters leave the kitchen sink running on the last night of the world as a symbolic act of surreal acceptance, acknowledging the impending end of the world. It signifies a sense of resignation and the insignificance of everyday tasks in the face of a cataclysmic event. The continuous running of the sink water creates a poignant moment that reflects the characters' emotional state and the surreal atmosphere of the story.