So as far as the consumers are concerned, these two products are perfect substitutes.

对于消费者而言,这两种商品是完全替代品

耶鲁公开课 - 博弈论课程节选

And I'm gonna invite you to think about which of these two resulting in products is me?

我想启发你们去思考,到底哪个理论能产生同一个我？

耶鲁公开课 - 死亡课程节选

We say two of these trials will come for real, so if you buy the products, you pay us, we will ship the product to you, otherwise you keep the money.

我们告知受试者试验中有两种商品是真实的，所以如果受试者想要购买的话，就可以付钱给我们，我们把商品寄送过去，否则钱就是受试者的。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选