The Radley game shows that the children are still just being playful but also irresponsible and inconsiderate. They look upon the Radleys in the same way many in Maycomb do: as if they are less than human. The children don't consider if the Radleys might be listening and therefore, they don't consider if their feelings may be hurt. One of the major themes of the novel is putting yourself in other people's shoes. Methodically, Atticus teaches the children this in a Socratic way, meaning that he gives them lessons with enough information that they come to the truth by themselves. At the end of chapter 4, Scout notes she doesn't want to play the game anymore because she is obedient to Atticus and because when she fell out of the tire, she heard laughter coming from inside the Radley house. This indicates that she still has fear of Boo but it might also indicate a moment of maturation where she feels sympathy for Boo Radley.