Very interesting article. I learned some new aspects of the life of the Sumerians at their times. Maybe that we soon have the same economic experiences that they had regularly when debts had been on too high levels. So after thousands of years we are not very much smarter than they have been. Therefore it is time to learn more from past to have a better future. Especially in economics we would learn more from the Sumerians than they could learn from us. I think they would be very scared if they would see our culture in the year 2018.