One of the very best books I have read. Sheds a bright light on the origines of the economy and the fairy tales that surround it. Brillant! I love the anthropologist perspective; the way debt has evolved through small family clans to modern society. I have to admit that, having researched the "economist" ways of managing natural resources and the "unlimited growth" paradigm (in a finite world, this is quite a bite to chew for an engineer), my understanding is that the economy has very little place for actually putting theories to the test... In science, theories are thought up, tested in practice and if they fail, well you've learned something! In economy it seems to me the theory just has to make sense.. and there it is, it must be that way things work... And just look at how it "works"!
This is a very nice complement to any research on the "mechanics" of economy that, in the end, are quite drab readings, and usually offer an incomplete perspective since the basic nature of economy is in fact social(no I'm not a socialist!!) through human exchange. I highly recommend this reading to anyone curious of how our world works... Also read Zarlenga.
BTW, nothing particularely marxiste, communist (except the fact the we, as humans do share "common" riches... and no I'm not a communist for using the word common!), this is a perticular and interesting view and has been cited in a white paper by economists from the IMF (... damn commies!) ;)