Nor do I. I was mainly stating that I think the absence of slavery is needed. You need the motivation to get more efficient labor and the laborers themselves ca

Nor do I. I was mainly stating that I think the absence of slavery is needed. You need the motivation to get more efficient labor and the laborers themselves can earn money and innovative. A slave with innovative ideas probably had the idea whipped out of them for trying to work less hard. Obviously not the only factor, but it would seem a logical story to me.