as a bunch of simultaneous equations.

写出均衡的表达式
So what are all the equilibrium equations going to be,

所有的均衡方程式将会成为什么
and that's what's going to be our model of what happens in the world.

这就是我们用来描述世界规律的模型
Are there any questions?

有问题吗
How are you all doing here?

都听得懂吗
Is this painfully repetitive of what you know.

重复你们掌握的知识是不是很痛苦啊
I need some feedback here.

给我点回应啊
How many of you haven't seen this before?

多少人以前没学过这个
Everybody's seen this before?

每个人都学过吗
What about all these people who e-mailed me

那些给我发邮件的人呢
and said they were scientists and philosophers and psychologists

他们说是理工科以及哲学和心理学专业的
and they wanted to take economics the first day.

他们第一天想上一下经济学