Today Car discusses what many economists believe that international demand for dollars (in the form of our debt such as Treasury Bills) allows the United States to maintain huge trade deficits, without fear of major US currency devaluation. But what were seeing now in this next downtown could be a paradigm shift. Quantitative easing and low — even negative — interest rates, which have become a way for central banks to prop up asset markets across the globe are at great risk. According to Ray Dalio: More specifically, central bank policies will push short-term and long-term real and…