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https://eureka.ykyuen.info/2010/09/22/%e8%b6%85%e7%88%86%e8%98%8b%e6%9e%9c%e6%a9%98%e5%ad%90%e7%b6%93%e6%bf%9f%e5%ad%b8-super-freakonomics/
超爆蘋果橘子經濟學 - Super Freakonomics