While the whole ring-caste system of the city is kind of creepy and that, in its own way, it does carry a degree of symbolism. Think of the walls separating the different classes of people. The Earth itself is made up of various layers called strata, all containing different types of rock with distinctive traits according to their location and age. Heh, looks like that interest I took in geology a few years ago paid off.
Edited on 09/25/2006 3:50am