- And what do you do? - I ignore the biggest bubbles in history, ma'am...

So, like the Queen asked, why didn't anyone see it coming?

"At every stage," replied Professor Luis Garicano, showing Her Majesty the LSE's new £71 million ($140m) faculty building in November 2008, "someone was relying on somebody else and everyone thought they were doing the right thing."

The British press snarled and barked at his sorry excuse for an answer. But given a few days - and then a few months, and then a few years - the economics profession finally got its explanation together...

"The simple response is that many people did see it coming."
~ Prof.Garicano, defending himself in The Guardian a week later

"Many people did foresee the crisis...but nobody wanted to believe [it]."
~ Open letter to the Queen, summarizing a Royal Academy seminar of experts, July2009

"The answer is extremely simple: no-one believed it could happen."
~ Mervyn King, governor of the Bank of England, BBC Today lecture, July 2012 (no doubt reprising his own 2009 audience withHer Majesty)

So many people, such simplicity! But oh, so much disbelief too!

Contrary to what celebrity-economists would have you think, most people did in fact see the crash coming. Ask anyone you know. I promise they'll say they knew what was coming. It's just that, well, they didn't do anything about it. It wouldn't have been a crash if they had. Because they would have got out of the way, or - if they had any say in the matter - they would have done something (raising interest rates, trading more cautiously, reining back lending standards) to stall the bubble long in advance.

But contrary to the professionals again, a few people most definitely did believe it would happen. What else do you think drove the 150% rise in gold and silver investing prices in the half-decade before Northern Rock blew up? Reviewing global finance in the August 2007 edition of his Gloom, Boom & Doom newsletter, Marc Faber - a long-time advocate of buying gold - listed 13 clear warnings of trouble ahead, starting with the 2001-2006 period.

"Ultra-expansionary US monetary policies," wrote Faber of Alan Greenspan's response to the Tech Stock Bust, "with artificially low interest rates lead to bubbles all over the world and in every imaginable asset class.

"First Warning: The price of gold more than doubles..."

That red line marks the credit crunch of 9 August 2007, which all too rapidly for the all-knowing disbelievers became the Northern Rock bank run of 14 September. Over the preceding half-decade gold and silver had doubled in price. Over the following 5 years, they've both gone on to triple again.

So being early was smart - or lucky...or just doom-n-gloomy...depending on whether or not you got in. But buying even as the crisis broke has seen gold and silver investing deliver as expected, albeit with ugly swings in the meantime just to keep new buyers on their toes.

"I realised early in 2007 that the economy was going south," writes John, a BullionVault user since September 2007. "I had an endowment that was going sour, so I cashed it in and bought my gold."

Phillip, who also began buying gold when Northern Rock hit the headlines - 5 years ago this Thursday - says that "The high level of personal and public debt had concerned me since 2004, and I realised that there was only one solution: money printing and currency devaluation. But it was only in 2007 that I found BullionVault and saw how simple it could be to own gold."

"Given what's happened in the last 5 years," adds Armand, a British user of BullionVault since September 2007 who now lives in Spain, "I'm surprised more individual investors haven't bought bullion as a direct result of the crisis.

"I'm not a doomer, it's a question of confidence. To me, owning gold and silver is the only option in a financial environment heading for collapse in one of two ways: rapid, unexpected hyperinflation, or a long, drawn-out decline."

Now, that kind of gloom might sound all too common today. Newspapers and their comments section are after all full of savers moaning about zero interest rates, politicians panicking over money-printing, and economists and investment strategists fretting about hyperinflation. But look again at the first 5 years of this financial crisis. How many of the new know-it-alls - who now say they saw it coming - have actually done something about it, and chosen to buy gold or silver, the best-performing asset class by a country mile since 2007's credit crunch began?

Sure, precious metals might be edging into the presidential debate. But amongst investors and savers, they remain very much a minority sport. No doubt because, quite simply, no one really foresees the crisis continuing. And amongst those who do, no one believes it. Not enough to take action.

To quote The Economist magazine's Free Exchange blog, 11 September 2012:

"We have learned that in most situations central banks are more than capable of controlling inflation on their own. Markets [today] show no sign of a fear of looming high inflation."

Phew! That's alright then. Economists and the financial markets don't believe there's a problem.