If you want a central banker to choke on his croissant, read him this quote from socio-historian Immanuel Wallerstein: "Countries (have lost the ability) to control what happens to them in the ongoing life of the modern world-system."
Stated another way, Wallerstein is asking: what do central banks no longer control?
Central banks still claim absolute control over their currency, interest rates,what's legal/outlawed in their financial systems, and so on.
Wallerstein is suggesting that era has ended and central banks are losing control of the value of their currency, their role in the global economy and the social discontent that is the ripening harvest of central bank policies that have greatly enriched the rich at the expense of everyone else.
This matters because instability in a nation's currency quickly spreads to the economy and then to society: as a currency depreciates, the value of everyone's money declines, i.e. the purchasing power of their money is diminished.