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Scout is reflecting on her father's wisdom as she stands on the Radley porch near the end of the novel. She reflects on Atticus's statement that,
"You never really understand a person until you consider things from his point of view, until you climb in his skin and walk around in it."
By the end of the novel, she has caught on. Instead of screaming or acting shocked at Boo Radley, she gives him a friendly smile and simply says, "Hey Boo." She escorts him home not as a side-show entertainment but as a friend.