 Exploitation can be transactional or structural. In the former case, the unfairness is a property of a discrete transaction between two or more individuals. A sweatshop that pays low wages, for example, or a pharmaceutical research firm that tests drugs on poor subjects in the developing world, might be said to exploit others in this sense. But exploitation can also be structural—a property of institutions or systems in which the “rules of the game” unfairly benefit one group of people to the detriment of another. As we will see below, Karl Marx believed that the economic and political institutions of capitalism were exploitative in this sense. And some contemporary feminists have argued that the institution of traditional marriage is exploitative insofar as it preys upon and reinforces pernicious forms of inequality between men and women (Sample 2003: Ch. 4).