> History has shown time and again that massive inequality is a huge barrier to maximizing the productivity of all of a society's members. Has it? Restricting

> History has shown time and again that massive inequality is a huge barrier to maximizing the productivity of all of a society's members. Has it? Restricting what opportunities individual people are permitted to follow would I assume both reduce productivity and increase inequality, but that doesn't have the inequality being the cause of the lower than theoretically possible productivity.