That is really nice to hear. I especially enjoyed those posts. One of my sisters gave that book to me for Christmas one year.

Together with your paradigm, the political history of the U.S. is pretty well explained for me. All that is left is the role of beliefs (which for indivduals are of course related to our psychologies), which can trump, if you will, the (other) effects of culture--even culture that effectively is the product of DNA.