How does Granger establish Montag's importance to the group's mission, even though Montag lacks academic training?

In Ray Bradbury's "Fahrenheit 451," Captain Beatty, not Granger, is the character who recognizes Montag's importance to the group's mission despite his lack of academic training. Beatty acknowledges Montag's unique perspective and ability to connect with emotions, intuition, and the human experience, which sets him apart from the intellectually trained individuals in their dystopian society. Montag's personal journey and his internal struggles become a valuable asset to the group seeking to preserve knowledge and humanity. Beatty sees Montag as a potential ally in challenging the oppressive regime, making his role crucial to the group's mission.