来自《耶鲁大学开放课程：金融理论 第1集 第1集》

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  He said, "Well, look at housing prices,"
  他说 我们要观察房地产价格
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  the Case Shiller Housing Index.
  据此他开发了凯斯席勒房价指数
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  So he's also famous because he had the idea of collecting
  他同时因开创性的统计房价
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  housing prices.
  而出名
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  So it's quite amazing, every town has to record,
  每一个地区按照法律规定
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  by law you have to record in the town directory,
  都要在地方志上记录房价
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  and they're often on the internet, what the price is of
  数据在互联网上也随处可见
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  every sale of every house.
  每所房子的成交记录都有保存 相当惊人
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  So everybody has it and it's all publicly available on the
  每个人至少是大部分人
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  internet, or most of it is publicly available on the
  都可以在网络上
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  internet.
  找到这些数据
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  And nobody thought to gather all this information together
  但是没有人想到收集这些数据