Well it's pretty obvious given the context of my original comment. Capitalism has lifted more people out of poverty than any other system of government in the history of the world. The United States, which employs many capitalistic principles became a world super power because of it. It led to the technological revolutions that we've experience and many of the modern conveniences that we have now are because of capitalism. We also have the luxury off affording said conveniences because of the economic system that we live under.
And Cannibalism keeps a tribe well fed without having to go out and expend energy and risk on hunting.