The farther the dollar's value drops, of course, the greater sense of urgency to unload U.S. notes, but Baumohl says good old economic fundamentals should keep the asset shuffling from escalating into a stampede. "Europe is headed into a slowdown this spring. That means more interest rate cuts are likely on the way," he says. "And rate cuts weaken currencies." The euro, in other words, isn't quite as good a bet as the buck right now, and that should keep Monday's trading day from turning into a nightmare for investors. But with the economies of Europe behind it, the euro is a coin to be reckoned with. Starting Monday, the financial world will never be the same.