经济学给生活带来的小小改变，I Love Microeconomics

Back when I was a freshman in college, I sat through the first microeconomics lesson with excitement. 

It was so useless yet so useful, too.

Useless, in the sense that the knowledge of microeconomics certainly doesn't directly help me land a job;

Useful, in the sense that it could potentially change the lens through which we see every decision we need to make in life. 

Let's see what it has to offer. Yay!