And "what is theory for and where does it come from?"

并且“理论的目的和它的来源是什么？”

youdao

He has a theory of love that argues that it's made up of three components: intimacy, passion, and commitment, or what is sometimes called decision commitment.

他有一个关于爱的理论，认为它由三个部分组成：亲密、激情和承诺，或有时称为决策承诺。

youdao

What finance theory is based on — and much of economics is based on — the idea that people want to maximize the expected utility of their wealth.

金融学理论建立在，并且很多经济学的都是建立在，人们希望能使自己对，财富的期望效用最大化这一基础上。

youdao

"Well,there are three basic paths they can go through. The first one is the Standard Model, which is basically the theory of what we know now.

VOA: standard.2010.03.05

That is to say, theory has certain ambitions to a totalization of what can be thought that resembles or rivals philosophy.

也就是说，理论探讨的问题,与哲学相似或相媲美,而且倾向于把它完整化。

耶鲁公开课 - 文学理论导论课程节选

That is to say, what we're taking up this week, is as much really the history of criticism as literary theory.

也就是说，我们这周要讲的，与其说是文学理论，不如说是文学评论的历史。

耶鲁公开课 - 文学理论导论课程节选

What we are looking at here is not what theory says ought to happen: this is what actually does happen out in the real world.

FORBES: Why Keynesianism Doesn't Work: Part II

To understand what the theory is doing, as Mr Rabin and Mr Thaler explain, you need to follow along with some arithmetic.

ECONOMIST: Economics focus

Instead of simply asking what another party is planning to do, game theory encourages managers to ask what is in the other's best interest.

ECONOMIST: Movers and shakers