Crises come quickly because nobody likes to dump until they absolutely have to. That is, when everyone else is dumping. Markets thus exhibit self-organising criticality.
Endogeneity doesn't help, either. Wall Street doesn't react because it assumes Congress isn't insane. Congress doesn't believe it's insane because "the Dow is down barely a point from a month ago!"
Marc Faber, Jim Rogers, Kyle Bass, Peter Schiff, list goes on and on.
Hoarding gold since 2005 and tell you one thing - just can't wait.
Edit: I don't think that defaulting on or debt wouldn't lead to catastrophic consequences. Nor am I an economist.
I don't want to burst your bubble, but if things go tits up, it will affect the demand of useless shiny metals and as a consequence, their value. If I were you, I would hoard toilet paper. Historically, for some reason, when the shit hits the fan, there is never enough toilet paper around to wipe up the mess.
US Treasuries at the most expensive price point for the past 300 years. That's for you, if you're looking for bubbles.
If: labor + energy to extract gold > gold price
we have a bubble?
;-) LOL
That said, gold's price is determined by supply and demand, just like for any other good. Certainly part of the price is supply, which is determined to some extent by mining costs, but there is also the demand side of the equation. You will find demand for precious metals greatly diminished during a recession or any kind of economic hardship. They are a luxury good. Toilet paper, on the other hand, is an inferior good whose price will not be affected by any economic hardship. In fact, it may even increase during such a crisis.
Buy toilet paper.
So, I'd say, it's more like poor will be using cigarettes, alcohol, etc. to trade just to survive while wealthy will use gold and silver as the currency. Because if you're this guard in Aushwitz, how do you know if Germnay wins the war. Or the US? You don't. That's why you'll prefer currency gold to national currencies.
Essentially, volatile events are not evenly spaced-- volatility tends to cluster around events.
The probability of the critical point being tripped could be heteroscedastically distributed. But that's not the same thing as saying the market judgement is endogenous to its prediction.