Complex sentence: More practically, Socrates suggests that members of the lower classes could rise to the higher ruling class, and vice versa, if they had "gold" in their veins-a crude version of the concept of social mobility.
Split into simpler sentences: More practically, Socrates suggests that members of the lower classes could rise to the higher ruling class, and vice versa, if they had "gold" in their veins. It is a crude version of the concept of social mobility.