The view of economists who point to anegative feedback loop, a vicious cycle where tight credit conditions weaken the economy which furter deteriorate the condition of financial markets and banks resulting in even more depressed economic activity. The collapse in consumer lending in October for instance leading to a collapse in the automobile markets resulting in more layoffs and plant closures which in turn exacerbate the economic condition and reduce consumer spending even more. The housing market is a key to all this as the root of the credit market problems of banks have to do with mortgage securities that have soured as house prices went down and foreclosures losses rose. With a drop in consumer spending and increase in umemployment as a result of the tight or nonexistent credit the housing prices are further depressed, resulting in a virtual collapse in credit, as happened in October with issuance of securities backed by consumer debt drying up for lack of buyers. The government steps in to unclog credit markets but housing price decline is still underway as these measures like the Fed's decision to buy $600 billion in Fannie and Freddie securities do not change the fundamental mechanism of dropping prices, as homeowners under water or potential buyers facing layoffs or no access to mortgage credit shy away from the market. ...