It would be interesting to overlay it with the S&P index. I won't be surprised if it shows a low correlation with the actual market performance. ( By looking at the chart for 2007,2008 and beginning of 2009 the low reading indicating low probability of crash would make more sense)
As long as 2 sides of transaction trust the 3rd party - the trustee, in case of bitcoin it's a mathematical protocol - I see no reason why it should not work.
What was Obama's contribution? The economic growth was anemic. And then dems complained about rising gap btw the rich and the poor. As for the stock market relative to gold it's was going nowhere.