What do you think about economists, who study the theories of economics and brag about being vast in the study of economics, yet doesn't help or contribute sufficiently to control or stop world economic meltdown?
What meltdown? The global economy is growing, global poverty is declining, developing countries are developing. We just recently had a global pandemic and we handled it quite well, it didn't become a Great Depression 2.0.
So far all the dooming about the repeat of 2008 crisis has been proven wrong. This of course doesn't mean that there will never be a crisis, but to say that the field of economics is useless and yielded no results sounds absurd to me. Today's economy seems more resilient because the hard lessons of crashes were learned.