Thomas Sowell said this quote
“ lthough the basic principles of economics are not very complicated, the very ease with which they can be learned also makes them easy to dismissed as simplistic by those who do not want to accept analyses which contradict their cherished beliefs. Evasions of the obvious are often far more complicated than the facts. Nor is it automatically true that complex effects must have complex causes. The ramifications of something very simple can become enormously complex. ”