In Chapter 5 of "Lord of the Flies," Ralph struggles with the growing division among the boys, particularly as Jack leads some of them away from the main group. When Jack and his followers leave to hunt and paint their faces, Ralph chooses not to call them back for several reasons.
Firstly, Ralph is trying to maintain a sense of order and authority, but he doesn't want to appear authoritarian or desperate. He hopes that Jack's actions might eventually lead the boys back to the values of civilization, as he believes in the importance of rescue and maintaining the signal fire.
Secondly, Ralph feels a sense of powerlessness. The dynamics among the boys are shifting, and Jack's growing allure and charisma are pulling them away. Ralph recognizes that calling them back might only provoke further rebellion and division, solidifying Jack's stance as a rival leader rather than restoring unity.
Lastly, Ralph's hesitation can also reflect his internal conflict and growing sense of isolation. He is aware that adhering strictly to rules and order is increasingly at odds with the impulses and desires of the other boys, who are attracted to Jack's freedom and the thrill of hunting.
In essence, Ralph's decision not to call the boys back stem from a mixture of strategic thinking, a desire to avoid confrontation, and a deepening realization of his diminishing control over the group.