Each person's ego can be calibrated as to its level of consciousness. Each level represents a strata or level analogous to the light spectrum. To people in the yellow range, everything looks yellow; in the blue range, everything seems blue. The human mind tends to dissociate from levels that are too unlike its own. this tends to fragment society into classes. Each class has its characteristic language, style, vernacular, customs, occupational standards, acceptable behaviors, and norms. There is a tendency to disparage the other classes or their styles or modes of behavior. There is also denial of the reality of other ways of thinking or proceeding...