INNOVATION AND INEQUALITY IN A SMALL WORLD
构建了一个多国经济增长理论，通过知识交换网络解释世界不平等先升后降的趋势，并展示小世界网络如何导致各国增长绩效的多样性和技术领先国的更替。
Abstract We present a multicountry theory of economic growth and R&D‐driven technological progress in which countries are connected by a network of knowledge exchange. Technological progress in any country depends on the state of technology in the countries it exchanges knowledge with. The diffusion of knowledge throughout the world explains a period of increasing world inequality, followed by decreasing relative inequality. Knowledge diffusion through a small world network produces an extraordinary diversity of country growth performances, including the overtaking of individual countries and the replacement of the technologically leading country in the course of world development.