It is not strange if a man reviles (degrades) a thing of which he has no knowledge, just as a wild hunter's wife throws away the pearl that is found in the head of an elephant, and picks up a gunj(a type of seed which poor tribals wear as ornaments).
"Ahu" are stone platforms on which many moai sit. There are 313 known ahu and 125 of these carry moai. The biggest, Ahu Tongariki is 220 m (720 ft), and had the most (15) and tallest moai.
Men make history and not the other way around. In periods where there is no leadership, society stands still. Progress occurs when courageous, skillful leaders seize the opportunity to change things for the better.