I am a retired engineer with a long experience in mechanical and dynamic problems and their solution. I have had an interest in our social system of macroeconomics since my student days. I am the author of a 310--page e-book that resulted from my part-time research over many years. It is the first (and apparently only) explanation that is logically and truly scientific, because past explanations have always been based on intuition not logic. They always have been classified by the experts as it being a pseudo-science, but at last we can discover how it is more specific and accurate (and of what it really comprises and how it actually works), if and when we think about it in

a less obvious but more practical way.