How does the novel The Boy in the Striped Pajamas support a theme of discovery?

In "The Boy in the Striped Pajamas," the theme of discovery is illustrated through the innocent friendship between Bruno, a young boy, and Shmuel, a Jewish boy in a concentration camp. As Bruno explores his new surroundings, he uncovers the harsh realities of the Holocaust, challenging his naive understanding of the world. This journey of discovery reveals the stark contrasts between their lives and ultimately highlights the tragic consequences of prejudice and ignorance. Bruno's innocent quest for friendship serves as a poignant reminder of the innocence lost amidst the horrors of war.