In order to introduce a change to a dynamic functioning system, be it biological. chemical or even mechanical the person being responsible for it needs to properly envision all of it (as a diagram, model, computer program, etc.,) and to learn from his way of seeing it HOW IT WORKS.
Unless this has been achieved the results are likely to be disastrous as shown in the example given above. In the case of our social system of macroeconomics, politicians take no notice of trying to understand the workings of the system, and even their experts in the treasury or other national think-tanks seem to have only a partial understanding about it. So it should be no surprise that our national economy lurches from crisis to crisis. This is amplified when speculators and monopolists dishonestly find new and better ways of gaining more than a fair share of the national bounty associated with social relationships in business and commerce.
A proper explanation of how our social system works has only recently become available and unlike the humanistic approach of the universities, this one is based on cold logic and engineering principles, for taking far-reaching axioms, making sensible assumptions, setting suitable definitions and developing accurate analysis. It has at last achieved the aim of many economists, who dared to express it, of making our subject a true science to replace the pseudo-science with which badly educated economists have been struggling to teach and apply over the past century or more.
It was written by myself and is titled: “Consequential Macroeconomics” and can be obtained for free from: email@example.com as an e-copy (book). Be aware that this is not easy stuff to accept, considering how badly the thinking process of most economists has been distorted over the past few years. In fact the results of my work were initially a shock to me too! But it is the basic and logical truth. Do not read when in socks unless they are well attached.