The second principle is did the distribution arise from the operation of free consent, people buying and trading on the market?

第二条原则，财富的分配是否,基于自由达成的交易，基于自由市场的买卖？

耶鲁公开课 - 公正课程节选

Now we need to think about a model of the stock market And the model we're going to use is based on what's called the Efficient Market Hypothesis.

现在需要想一想一个股市的模型是怎样的,我们要用的模型是,基于有效率市场假说的。

麻省理工公开课 - 计算机科学及编程导论课程节选