So... I don't think there's a universal "underlying problem." Everything has a context. Mobilising the capacity of an economy is, IMO, a macroeconomic question.

So... I don't think there's a universal "underlying problem." Everything has a context. Mobilising the capacity of an economy is, IMO, a macroeconomic question. Besides being big and involving the whole economy, macroeconomics is almost synonymous with monetary economics... the economics of money. So, I don't think you can seperate it from tax and monetary policy.