#economics 如果一个国家的经济发展到了一定水平，就不会愿意打仗 --> 经济全球化能带来永久的和平 **The Dell Theory**:  No two countries that are both part of a major global supply chain, like Dell's, will ever fight a war against each other as long as they are both part of the same global supply chain. ("The World is Flat") **["The MacDonald Theory"](https://www.nytimes.com/1996/12/08/opinion/foreign-affairs-big-mac-i.html)**: No two countries that both have a McDonald's have ever fought a war against each other.