neighbours. In this multi-ethnic city, each co-residential group of between sixty and 100 people would have enjoyed two kinds of communal life. One was based on kinship, with family ties extending far beyond the apartment block and often beyond the city – ties which could have troublesome implications, as we’ll shortly see. The other was based more strictly on co-residence in apartments and neighbourhoods, often reinforced by shared craft specializations such as garment-making or obsidian-working.