 Style, according to Granger, is a way of imposing structure to an experience. Experience must be taken here to go beyond empirical experience. In general the kind of experience the mathematician appeals to is not empirical. From this experience come the “intuitive” components that are structured in mathematical activity. But one should not think that there is an “intuition” to which, as it were externally, one then applies a form. The mathematical activity gives rise at the same time to form and content within the background of a certain experience.