Introduction to Sociology/Sociological Theory

In sociology, there are many theories. Two theories exist typically. 

One is a Structural-Functionalism, the other one, there is a Conflict Theory.

The function principle, we believe there is a side view positively the world in a group, and therefore, it will get a social class, depending on the capabilities of the individual.

However The conflict theory, tend to see the negative world. For example, I think the world is unfair and, when you got your own position even if the effort, and receive less compensation than his efforts.

I do not think one theory is correct. So, I think they will not be pursuing the theory of one.

I think that it can be applied to the two theories in the world. I think the most important thing is to correctly apply the theory of each other.

Two theories do not exist in the world that may be interested. I want to know not only the theory of both, also other theories. For sociology and was the idea while studying diligently for the theory, it must be tested for a number of theories. Thank you.