Constantine the Great created the solidus, a gold coin that held its value well enough to be a monetary standard for seven hundred years. The Bretton Woods monetary system survived a quarter century. The U.S. dollar is worth maybe 5% of its 1900 value.
Yet like all great schemes it has its limits. "But now the world is losing faith, as well it might. It's not that the dollar is overvalued—economists at Deutsche Bank estimate it's 20% too cheap against the euro. The problem lies with its management. The greenback is a glorious old brand that's looking more and more like General Motors." Ouch! Take away my membership in the American Economics Association before you compare me to Rick Wagnoner!
The strength of the dollar is of both economic and geopolitical significance.
Our current international financial system has no anchor in the real economy. We have floating exchange rates that float whithersoever the whims of speculators send them. Wallace and Sargent demonstrated three decades ago that floating exchange rates have no equilibrium. The result is uncertainty in trade, profits for banks, and the diversion of many clever folk into speculation.





