I’ve written about default assumptions before: how for example people in different parts of the English-speaking world have different assumptions about what they’ll get when they order “tea” or a “burger.” In the southern United States, the subcategory of “iced tea” has become the default, while in the northern US it’s “hot tea,” and in England it’s “hot tea with milk.” But even though iced tea is the default “tea” in the South, everyone there