What does it mean to be normal? Normalcy as seen sociologically reflects the idea that majority of public have about things. But we have to keep in mind that the things that are considered normal now, once might be considered abnormal and vice versa.
So what we have here is evolution of some idea with time. These ideas are defined by the people and the contemporary society. But how do these ideas take shape? Is it really the decision of the majority? Or it is decision of some people in the society who really matter? When these people make a judgment the rest follow…
This seems plausible. With the given social structure we have ensured that more people have to think about two square meals than reflect about life and other things. So really only a very few people in any given society at any given time think. And it is these people who decide what is normal… They are the ones who formulate guidelines for being normal or abnormal…
And the rest of public will tend to follow them without reflecting about things themselves. This is true for all the social institutions that have existed for some time. Nobody questions the ideology, they only follow.
For example let us take an issue. It is not supposed to be good to be adulterous. Why? Who decides that adultery is not good? Many societies have the strongest punishment for the crime of adultery. But why it is considered a crime at all? By whose definition adultery is crime? Since our ancestors believed that it was a crime we also tend to think so. But has anybody tried to see the justification for this other than given by the ancestors. They just know it is not good. But why if somebody asks them, then what is the answer that they give? That its just not good thats all.