In Post 2.2, the difficulty in obtaining clear data on the number of bilinguals in different countries is discussed. Two examples are given. In the first, the United States, which does not address bilingualism as such in its census or annual surveys, asks three language questions that allow one to obtain a fairly good estimation of the number of bilinguals. In the second, it is shown how Switzerland has a more restrictive view of bilingualism. This impacts the number of bilinguals the census reports on.