To understand the Fed actions one has to realize that there is now a rising probability of a “catastrophic” financial and economic outcome, i.e. a vicious circle where a deep recession makes the financial losses more severe and where, in turn, large and growing financial losses and a financial meltdown make the recession even more severe. The Fed is seriously worried about this vicious circle and about the risks of a systemic financial meltdown.

If you are looking for a good overview of the present financial troubles, this is a good place to start.

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