"You really can't do anything when you have a virus that doesn't grow well except trying to wiggle it around to get it grow better."

VOA: standard.2010.04.29

Well because you can, because it's less expensive to do so than it is elsewhere in the world and people naturally like sweet tastes.

一是因为你能做到,二是因为这么做的成本比在其他国家低,更何况人们天生喜欢甜味

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选