People often get this wrong. The goal of economics is not to fix economic systems, any more than the goal of psychology is to make the human mind perfect, or th

People often get this wrong. The goal of economics is not to fix economic systems, any more than the goal of psychology is to make the human mind perfect, or the goal of political science is to guarantee that your candidate wins every election. What these all have in common is they are merely descriptive sciences, not engineered solutions to specific problems. Understanding how something works currently, is not the same as having the tools to make it work better. To use a similar example to the one you gave - the common cold is one of the most common and well-studied illnesses known to man, but there is no vaccine for it. Lazy scientists? No, it's just that not every problem has an easy solution.