What lies does ponyboy say to randy why do you think he does this?

In "The Outsiders," Ponyboy lies to Randy by telling him that he doesn't care about the upcoming rumble and that the gang's rivalry doesn't matter to him. He likely does this to protect himself emotionally and to maintain a sense of bravado in a difficult situation. By downplaying his feelings, Ponyboy tries to shield himself from the pain of the ongoing conflict and the looming consequences of violence. This reflects his internal struggle between the harsh realities of his life and his desire for peace and understanding.