modularity is deathpic.twitter.com/82z52vJBsg
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@vgr in the sense of separate groupings? Alexander thinks boundaries are non-segmentary (at least US) http://www.rudi.net/books/201 (& that's good)
@sarahdoingthing No, it's a sociological concept. Durkheim I think. Arab tribes are segmentary (modular). Agri-civilizations are not.
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