Why does dr. livesy narrate chapters 16 and 17 in treasure island?

Dr. Livesy narrates chapters 16 and 17 of "Treasure Island" to provide a different perspective on the unfolding events, particularly regarding the complexities of leadership and moral choices. His viewpoint adds depth to the narrative, emphasizing themes of loyalty, betrayal, and the consequences of greed. Furthermore, Livesy's rational and composed demeanor contrasts with the more chaotic experiences of other characters, offering readers a clearer understanding of the treacherous situation they face. This shift in narration enhances the storytelling by highlighting the stakes involved in their adventure.