Everyone in the world shall under normal circumstances shall easily categorize itself as a "normal" which is a arbitrary frame of reference made for most people to be mutually compatible.
The knowledge of ones shortcoming has dual influences on a persons responses. The actions are further guided to protect the identity as a 'defective' and to develop other mechanism to compensate for the deficiency.
Thus the world has two kind of people normal and not so normal. The self recognition of being abnormal by the host categorizes it as a 'neurotic' if not he is a 'psychotic'.
As previously stated the right and wrong are guided by popular social acceptance, and most often a persons affinity to popular stuff is guided its intention to belong to the larger group. The other bunch of people categorized by the popular as the 'others' are the ones that oppose the popular. For example communist ideas might be considered neurotic in US same way as democratic idea is considered in China.
Thus every society has only two types of people; either 'psychotic' or 'neurotic' i.e. two groups of people one that knows that it is crazy and the other that does not (yet).
