Yes, the Fed can influence the intermediate future, although we are long past the point where we can avoid drinking poison. The best the Fed can do now is choose the poison. Bernanke has decided to choose the inflation/worthless dollar poison as opposed to the hard landing/deep recession/deflationary poison.
The real problem on the horizon that the Fed will not be able to do shit about is the unwinding of those hundreds of trillions of dollars worth of derivatives, much of which were likely erroneously valued and uncollateralized. When that happens, the Great Depression will look like a god damn speed bump. Put your money under your mattress. You'll lose it if you have it anywhere else.
Anything the Fed does now is just like putting a band-aid on your little boo-boo, while some fucker is standing behind you, about to swing a machete at your neck.
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"Offer them what they secretly want and they of course immediately become panic-stricken."