二、公平交易

YiLin Yuanchuang ban - - 智商黑洞 -

大明和小美各出相同的钱买糖果后,大明跟小美说:“这个糖果一个10元,因为你比我多吃两个,所以待会儿你要给我20元。”这场交易乍见之下,似乎公平,但实际如何呢?

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