If you eat something and get fat, you should be responsible for it. I think that is the attitude of the great majority of Americans, that you should be responsible for what you eat.
"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.