Black Self Interest

Adam Smith ,regarded in academic circles as the founding father of economic thinking, stressed the magic of self-interest as the key to the division of labor. Others after him such as Frederic Bastiat and Ayn Rand continued the theme. In essence the theory is that if everyone acts in his or her self interest everyone benefits. Self interest meaning that individuals made those decisions and took those actions that most benefited themselves.
In my opinion, the most succint and complete (and therefore most economical) written expose to expound this is "I Pencil."
The magic trick is that by one person producing the best product that he can produce by innovation and another doing the same everyone benefits from higher quality goods and the resulting competition. In essence, the desire for material wealth properly channeled through a constructed social system produces prosperity.
In reality, economic history is riddled with examples of lust for material items causing great destruction or in economic parlance unintended and intended consequences.
Whatever. This is the generally accepted philosophy of capitalist economies and the actors within them. For the sake of brevity and a desire to give the subject its just due I am leaving Black Game Theory for a seperate post.
Where then is Black Self Interest? Is the black consumer acting rationally? What is black self interest?
Like the Hippocratic oath, first do no harm, to yourself that is.