three realistic gold targets: $6,000 $7,000 , page-10

I think Exters pyramid is somewhat out, 4 trillion seems very low.

This is a chart showing the net debt of just 7 economies:

Economic Indicator Listing in Year 2009

Total Government Gross Debt (National Currency)
Canada	CAD	1,260.47 Billion
France	EUR	1,487.33 Billion
Germany	EUR	1,745.22 Billion
Italy	EUR	1,761.19 Billion
Japan	JPY	1,032,388.53 Billion
United Kingdom	GBP	951.527 Billion
United States	US$	11,863.19 Billion

If $1 tillion is 1,000 billion then the US alone owes 11 trillion, added together there's at least $20 trillion just there. Add to that again the value of the currencies in circulation and the numbers get substantially higher.