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The Big Mac index;Calories and currencies 巨无霸指数;货币卡路里 What burgernomics says about five years of turmoil 汉堡经济学解读危机五年 Our Big Mac index is back. Normally a beefy bundle of exchange rate fun, this year it ismarking a sombre anniversary: five years since global money-markets seized up in thesummer of 2007. What does burgernomics reveal about today s exchange rates, and aboutthe impact that five years of distress, from credit crunch to euro crisis, have had oncurrencies? 《经济学人》的巨无霸指数又回来啦!与往常拿厚厚一叠汇率开玩笑不同，今年是为了黯然纪念2007年夏全球金融市场失灵五周年。汉堡经济学该如何解读现今的汇率形势，以及五年混乱从信贷紧缩到欧元危机对货币的影响? The Big Mac index is The Economist s burger-based measure of whether currencies are over-or undervalued. The recipe comes from the theory of purchasing-power parity, which saysthat exchange rates should eventually adjust to make the price of a basket of goods thesame in each country. Our basket contains just one item: the Big Mac hamburger, which ispretty much the same around the world. 巨无霸指数是《经济学人》以汉堡价格为基础来衡量一国货币是否被高估或低估。其理论依据是购买力评价学说，该学说认为应使汇率最终调整到使各国一篮子商品的价格相同。《经济学人》的篮子里只有一样商品：巨无霸汉堡，该商品在全世界卖的几乎是一样的。 | 
