What does uncle Axel learn from David?

Uncle Axel learns about the depth of David's abilities and the complexities of their society's values regarding mutations. Through David's experiences, Axel gains insight into the fear and oppression that those with differences face. This understanding deepens his sense of empathy and reinforces his belief in the importance of individuality and freedom, contrasting with the rigid norms of their world. Ultimately, David's resilience inspires Axel to question the status quo and explore the implications of their society's treatment of deviations.