Slavery is also a great example of partnership (a stable relationship backed by shackles and violence), division of labor (I sit around; you work!) and increasi

Slavery is also a great example of partnership (a stable relationship backed by shackles and violence), division of labor (I sit around; you work!) and increasing returns to expertise (I can do more due to having better living conditions and more friends and connections than you, slave). I don't get your point here.