In recent years, conceptual categories have been studied intensively and in great detail in a number of the cognitive sciences – especially anthropology, linguistics, and psychology. The evidence that has accumulated is in conflict with the objectivist view of mind. Conceptual categories are, on the whole, very different from what the objectivist view requires of them. That evidence suggests a very different view, not only of categories, but of human reason in general. (George Lakoff)