Mainstream academic economists believe that we advance economics by "testing" theories. Austrian economists believe economics is about understanding human action and does not have to be subjected to constant tests.
Massive "fiscal stimulus" programs by European governments failed to reduce unemployment. The latest buzzword from the Continent is the "entrepreneurial state," based upon the delusion that government spending and regulation are responsible for wealth creation by private entrepreneurs.
With the approval of Biden's infrastructure bill, it now turns out the US government is even in control of a "kill switch" that could disable your car if you are deemed "impaired."