A tool I really like to use to gauge public sentiment. Google Trends
We clearly see a rising trend in the search term "buy gold" and the two huge spikes both came during major financial crisis. One in 2008 during Hank's TARP debacle and again in 2011 during the Debt Ceiling Limit debacle.
Public interest will be fun to watch as the "bubble" forms over the next decade.
PS "buy gold" still pales in comparison to searches for "Justin Beiber". LOL It also lags "buy bonds". So just where is the Gold bubble now? Long, long ways off is my guess.