You can always protect yourself by buying forex. I'm not basing this on any analysis or anything but I'm just pointing out that if/when things REALLY start going down the $hitter, you can load the boat with the Australian dollar or other currency such as the Swiss Franc for example. That's what I'm probably going to do. I'll buy a strong currency against the U.S. dollar and leverage the $hit out of it. LOL
Yes, if things get bad enough and If gold goes to $5000 an oz the dollar will be wiped off the face of the earth. The current reserve currency will be replaced by a world fiat currency, which will allow for even easier consolidation of wealth. As Marx says capital does not recognize borders. This is why the entire system needs to be re thought. I strongly recommend picking up the book The Value of Nothing by Raj Patel. It intelligibly attacks the current financial crisis from its' source- the belief in the existence of "free" markets and the illusion that said markets know and can efficiently relate real value and price. He also provides practical, democratic alternatives to our corrupt system with real time examples.