anatomy. Therefore, we cannot "tell" that mathematics is "out there" without relying on conceptual metaphors rooted in our biology. This claim bothers those who believe that there really is a way we could "tell". The falsifiability of this claim is perhaps the central problem in the cognitive science of mathematics, a field that attempts to establish a foundation ontology based on the human cognitive and scientific process. Political significance and involvement Lakoff has publicly expressed some of his political views and his ideas about the conceptual structures that he views as central to understanding the political process. He almost always discusses the former in terms of the latter. Moral Politics (1996, revisited in 2002) gives book-length consideration to the conceptual metaphors that Lakoff sees as present in the minds of American "liberals" and "conservatives". The book is a blend of cognitive science and political analysis. Lakoff makes an attempt to keep his personal views confined to the last third of the book, where he explicitly argues for the superiority of the liberal vision. Lakoff argues that the differences in opinions between liberals and conservatives follow from the fact that they subscribe with different strength to two different central metaphors about the relationship of the state to its citizens. Both, he claims, see governance through metaphors of the family. Conservatives would subscribe more strongly and more often to a model that he calls the "strict father model" and has a family structured around a strong, dominant "father" (government), and assumes that the "children" (citizens) need to be disciplined to be made into responsible "adults" (morality, self-financing). Once the "children" are "adults", though, the "father" should not interfere with their lives: the government should stay out of the business of those in society who have proved their responsibility. In contrast, Lakoff argues that liberals place more support in a model of the family, which he calls the "nurturant parent model", based on "nurturant values", where both "mothers" and "fathers" work to keep the essentially good "children" away from "corrupting influences" (pollution, social injustice, poverty, etc.). Lakoff says that most people have a blend of both metaphors applied at different times, and that political speech works primarily by invoking these metaphors and urging the subscription of one over the other. Lakoff further argues that one of the reasons liberals have had difficulty since the 1980s is that they have not been as aware