What message is diamond trying to convey with his focus on the conflict of the maori-moriori people?

Diamond highlights the contrasting outcomes for the Maori and Moriori people to illustrate the impact of different societal structures on their development. He uses this example to emphasize how cultural practices and social organization can influence a group's success or failure in sustaining a society. By drawing attention to the Maori's dominance over the Moriori, Diamond underscores the role of geographic and historical factors in shaping civilizations.