The Hunter-Gatherer Age, which follows the First Revolution of Speech, is the beginning of specialization.
During that Age, specialization is mainly related to sex. Men go hunting, women do gathering close to the shelter. But among the men and also among the women, specialization must also have started to appear, based on the skills and capabilities.
Specialization will increase through all the successive Revolutions and Ages.
What will the Fourth Revolution add in terms of specialization? What if, each of us becomes a specialist in it’s own right? 6 billion special people?