After the verbal explanation of the model (definition), he tries to find out what the model and the target kind share in common (sameness) and what differentiates them (difference). Through this comparison, and after having been aware of the different kinds and sub-kinds, he can classify sophistry also among the other branches of the ‘tree’ of division of expertise as follows: "1. production, hunting by persuasion and money-earning, 2.acquisition, soul wholesaling, 3. soul retailing, retailing things that others make, 4. soul retailing, retailing things that he makes himself, 5. possession taking, competition, money-making expertise in debating."