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-- "Bernanke is simply swappping one asset for another that's already on the books. No new "money" is being created in the process."
When Bernanke 'increases the balance sheet' he isn't swapping an existing asset for mortgages (over one trillion dollars worth purchased so far) or treasuries (600+ billion planned), he is swapping dollars that were never saved or acquired by anyone, but that were 'printed'. This is exactly what he said he would do.
From the horse's mouth:
"Since the beginning of the financial market turmoil in August 2007, the Federal Reserve's balance sheet has grown in size and has changed in composition. Total assets of the Federal Reserve have increased significantly from $869 billion on August 8, 2007, to well over $2 trillion." - www.federalreserve.gov/monetarypolicy/bst_recenttrends.htm
"Today an ounce of gold sells for $300, more or less. Now suppose that a modern alchemist solves his subject's oldest problem by finding a way to produce unlimited amounts of new gold at essentially no cost. Moreover, his invention is widely publicized and scientifically verified, and he announces his intention to begin massive production of gold within days. What would happen to the price of gold? Presumably, the potentially unlimited supply of cheap gold would cause the market price of gold to plummet. Indeed, if the market for gold is to any degree efficient, the price of gold would collapse immediately after the announcement of the invention, before the alchemist had produced and marketed a single ounce of yellow metal.
What has this got to do with monetary policy? Like gold, U.S. dollars have value only to the extent that they are strictly limited in supply. But the U.S. government has a technology, called a printing press (or, today, its electronic equivalent), that allows it to produce as many U.S. dollars as it wishes at essentially no cost. By increasing the number of U.S. dollars in circulation, or even by credibly threatening to do so, the U.S. government can also reduce the value of a dollar in terms of goods and services, which is equivalent to raising the prices in dollars of those goods and services. We conclude that, under a paper-money system, a determined government can always generate higher spending and hence positive inflation.
Of course, the U.S. government is not going to print money and distribute it willy-nilly (although as we will see later, there are practical policies that approximate this behavior).8 Normally, money is injected into the economy through asset purchases by the Federal Reserve. To stimulate aggregate spending when short-term interest rates have reached zero, the Fed must expand the scale of its asset purchases or, possibly, expand the menu of assets that it buys. Alternatively, the Fed could find other ways of injecting money into the system--for example, by making low-interest-rate loans to banks or cooperating with the fiscal authorities. Each method of adding money to the economy has advantages and drawbacks, both technical and economic. One important concern in practice is that calibrating the economic effects of nonstandard means of injecting money may be difficult, given our relative lack of experience with such policies. Thus, as I have stressed already, prevention of deflation remains preferable to having to cure it. If we do fall into deflation, however, we can take comfort that the logic of the printing press example must assert itself, and sufficient injections of money will ultimately always reverse a deflation." - Remarks by Governor Ben S. Bernanke before the National Economists Club, Washington, D.C. November 21, 2002 www.federalreserve.gov/BOARDDOCS/SPEECHES/2002/20021121/default.htm
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