Field glasses allowed us to distinguish small groups at various places, probably soldiers.
Within the Hasidic world, one can distinguish different Hasidic groups by subtle differences in dress.
Lines distinguishing different groups and generations could not be completely erased by the building of a sense of common commitment and endeavour.
We can therefore distinguish groups with similar market capacity, and these can be termed 'classes'.
In general, seven categories are used to distinguish groups in the class structure:
It is a valuable concept in the genomic era where "phenes" or "traits" (symptoms) are used to distinguish groups with genetic disorders.
This additional insight may be used to enhance communication with group members, make sense of group members' decisions, and distinguish groups from one another, among other things.
Another frequent application of the term is to distinguish political groups in areas of mixed religious backgrounds.
Energy issues touch everybody and it is therefore hard to distinguish clear groups with differing perceptions.