gotten, than 4 third and 2,

三分之四和二
he would have chosen it.

他应该选它
And B, she would have chosen her thing if it was better than

她应该会选比三分之二
2 thirds and 2.

更好的选择
So clearly they must have been too expensive for those two to

很明显他们由于太贵而没选
choose because they were rationally choosing the right

因为他们理性地选择了正确
thing given what they could afford.

而且可以承受的
So then you just add the stuff up.

只要将所有这些加起来
You add and you find that total consumption value is bigger than

就会发现总消费值大于
total endowment value.

总禀赋
That's in the Fisher economy, but we've changed the Fisher

这就是Fisher经济但是由于加上了这个技术
economy because now we've added this technology which took away

令到一些初始商品被拿走并转为二次商品