The value of that short tennis court sized cube is about $1.8 trillion. This compares to the US government’s sovereign debt of $6.9 trillion, which until 1971 was part-backed by gold. The US Gold Reserve is just over 8,000 tons - which is about 6% of the total gold ever mined. It is worth about $100 billion, or 1.5% of the US national debt.

$1.8 trillion is about one fourteenth of the paper based international bond markets, which themselves, at about $26 trillion, are about two thirds composed of western government sovereign debt almost all of which has appeared, co-incidentally, since 1971 and the declared supremacy of paper money, which was what allowed governments to borrow without caution. The total gold content of the world would pay - at current values - about 7% of the international bond market's sovereign debt.  But of course 75% of the world's gold is not available to governments - being held privately as jewelry, bullion and coin.  In fact only about 30,000 tons, about 1% of the world's sovereign debt is what is held in central bank gold reserves.

Meanwhile the entire gold stock of the world - including the privately held bulk - is much less than one half of one percent of the underwritten risk in the global financial derivatives markets.

The world has placed absolute trust in paper currency denominated assets. Investors have shunned gold for about twenty years while the notional value of paper based financial assets has exploded.