主题：集中居住是专业分工的前提 -- 彼得潘

集中居住是专业分工的前提.

专业分工是提高生产效率的前提.

见亚当 史密斯的 (国富论).

Tried to reply to a discussion in economics (http://www.cchere.net/thread/1519100/) and could not. Have to start a topic here.