It appears we are on the verge of the greatest deflation in world history. So far in this decade world liquidity has been on an inflationary bent. The mechanics of this are quite simple. Prior, the greenback was the only world reserve currency. Then the Euro showed, the first currency large enough to challenge the greenback since the demise of the pound sterling as world reserve in the 1920's and 30's.
So the world's Central Banks are moving to a "mixed basket". Primarily this means a Euro set of monopoly money has been thrown into the world money basket with the already existent greenback monopoly money.
So when in the past, there was a greenback dollar competing for goods on the world market. There is now a Euro dollar as well. The results are seen in world trade prices as they are bid up on scarce goods like oil.
This is all fine and well. Governments seldom complain about a bout of inflation.
But what happens if the greenback snuffs out? That is the greenback falls out of the world trade basket? Then the world is chasing the Euro alone. We then have the classic dollar shortage of deflation.
The only way the greenback could survive is if the plan started in mid 2004 was continued. That is raise the cash rate on the greenback 2% per annum until early next decade. Of course this would a dramatic curtailing of the easy life for the US, which has proved politcaly unpaletable.
So "helicopter Ben" halted the program early in 2006 and Fed is talking about lowering rates. The greenback is toast! It seems the Americans are so unwise as to think a bout of high interest rates are worse than their loss of the world printing press. They are very mistaken!
At some point in the near future the world will panic out of the greenback. The only thing that keeps the greenback going, is China and Opec buying excessive amounts of US T-bonds. They can't keep this up forever. And post Chinese olympics will see the practice come to an end.
Japan formerly the great backer of US T-bonds, ceased net purchases in mid 2004. Now the Japanese market is beginning to rid itself of the oversupply of T-bonds. This will be replicated everywhere else.
Post 2008 will see the greenback burn for a few years, until it is no more. Until the greenback is purely the domestic currency of the US, only kept alive internally by exchange controlls.
This thing has happened before. The 1920's saw the inflation created by the pound and the greenback together. Then beginning in early 1929 months before the Wall street crash, the pound began to wink out.
The greenback almost collapsed once before, in August 1979. Then the competitor was gold. Europe and Japan rescued the greenback back then. Otherwise we would have had the depression of the 1980's, rather than the recession!
One can conceive of the printing press staving of deflation. But what happens is one day the inflated product is rejected and ceases to be liquidity. Then you get the deflation!