1) glycemic index 2) the unbelievable number of calories you can get before triggering a satiety signal 3) the social norm of scientifically huge portions. My

1) glycemic index 2) the unbelievable number of calories you can get before triggering a satiety signal 3) the social norm of scientifically huge portions. My wife and I have gotten the point of ordering a single entree and splitting it, sometimes we can get away with a single appetizer. 4) Two billion people in Asia do eat a lot of rice. They also do more physical work and probably don't eat as much rice per serving as Americans. 5) I should also add corn to the list.