Linguistics, or the study of language, is today’s topic, expressed in four buildings: On the left, traditional languages are used to express a four square plan (top), and a nine square plan (bottom), with floor plans on the left and ceiling plans on the right. On the right, modernist languages express the same four square (top) and nine (bottom), with symmetrical plans on the left and directionally symmetrical plans on the right – mainly because modernist ceiling plans are far less interesting to draw. . . A section and elevation lie beneath.