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?
Economist can only do the much they can do. There is no world order yet so every country is in charge of their economy, and the head of the country makes the hard decision many of which are motivated by the advice he gets from those that surrounds him.
The government appointments individuals to advice them in various sector and if they gave the economy role to a substandard individual then the country may not grow. The countries with good economy worked for it starting from the government economy enhancing plans and programs and also their relationship with the human resources the country has.