" Economists sometimes joke that if a man marries his housekeeper, the GDP of the country declines. If, on the other hand, he sends his mother to an old-age home, it increases again. In addition to the joke saying a lot about the perception of gender roles among economists, it also shows how the same kind of work can be counted or not counted as part of the GDP. "

― Katrine Marçal , Who Cooked Adam Smith's Dinner? A Story About Women and Economics