The way we stock our grocery stores with the expectation that a third of the food will just go to waste is unbelievably unsustainable, but it's a hell of a marketing gimmick. Feasts and cornucopias and all of that used to be special because they were rare - but in America we show you that image over and over until it becomes your expectation, and not surprisingly Americans wind up consuming way more than other cultures do as a result.