ã¨ããNBERè«æãä¸ãã£ã¦ããï¼ungatedçï¼ãåé¡ã¯ãAre Big Cities Important for Economic Growth?ãã§ãèè ã¯Matthew Turnerï¼ãã©ã¦ã³å¤§ï¼ãDavid N. Weilï¼åï¼ã 以ä¸ã¯ãã®è¦æ¨ã Cities are often described as engines of economic growth. We assess this statement quantitatively. We focus on two mechanisms: a static agglomeration effect that makes production in bigger cities more efficient, and a dynamic effect whereby urban scale impacts the prod
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