There are economic theories, but there is also applied economics, isn't it?
For most people it is the application of economics to real world issues and problems that matters.
Perhaps, the important point is to understand and know how to apply economics, its different theories and models to explain and solve real problems. That is not easy, though. Many economists can't do it well.

Yes, anyway, it do help us to understand the economic world.

高手，直接英语对话！学习是为了培养能力，很多东西。

联系实际自然有用了啊！

学会了一点——跳出琐碎现象，观察现象背后的规律。能站在高一点的视角观察事物。