一穷国和穷人不同于富国和富人，不仅因为他们缺少资本，而且因为他们缺少知识。发展中国家既可以从国外获取知识，也可以在国内创造自己的知识。４０年前，加纳和韩国的人均收入基本上是相同的；到９０年代初，韩国的人均收入已经比加纳高出６倍。有些人认为，造成这一差距中 A poor and poor people are different from rich and wealthy people not only because they lack capital but also because they lack knowledge. Developing countries can both acquire knowledge from abroad and create their own knowledge in the country. 40 years ago, the per capita income in Ghana and South Korea was basically the same; by the early 1990s, South Korea had 6 times more per capita income than Ghana. Some people think that caused this gap