I have contradictory messages about the impact of a weakening dollar on the economy and markets. On the one hand, US goods become cheaper for foreignor countries or alternatively, they can charge higher prices and reap greater profits--the dollar serves basically as a credit note which the foreign country who accepts the dollar can only cash in by using them ultimately by buying American goods or holding up the American real estate market. Worse case scenario, if some foreign countries stop accepting the American dollars that will stabilize the trade deficit--i.e. there becomes a theoretical limit. On the other hand, everyone seems to be righfully concerned. Who can explain?