This is not true though it is often repeated. US issued notes are good and represent among the most stable assets on the earth. If a population of people perceive something to be of worth-- then it is. The dollar and the US economy which it represents has been a strong investment since WWII. The best estimates are that it will continue to be a great investment-- increasing in size from 13 trillion dollars to 20 trillion dollars by 2020. The European economy will decline in relative size. China and India will have increasing economies.
In the 1980s, people said the very same thing in relation to Japanese financing of US debt. Guess who was right?
Buy gold if you want, because enough people "perceive" a panic-- they will indeed buy up the price. Gold is not however the economic panacea its proponents suggest. The US economy is a good investment.
Thanks. I'm not that good with economics. But I do think gold has its place by virtue of being a valuable mineral.