RE: No doubt about it...I watched gold go from I think it was in around $150.00 -200/ oz go up to $870+ at the time I was not involved with the market but I did call it well I at that time told a few friends that if I had the money I would buy all the gold I could get my hands on then I said at $865 I would sell everything because it was over bought and couldn't keep going. Shortly after it came almost straight down. I watched the world evens at the time. there was a lot going on and It would take me a few days to relocate all the events that took place at that time to make the price climb the way it did. But rest assured the world is a different place and if I thought that it would go like it did I would not miss the boat the second time around. I had no cash then but I do now. I look for world events to make investments. Personally I like companies going bankrupt as they create the largest quick profits. What can I say I like the high risk high reward method.
As for what will replace the US dollar? Maybe the canadian dollar or maybe the euro. To be honest I don't really know, but if it was gold then it has to be stable.