mr. greenspan. but, bill, the real question i think the kind of elephant in the room, is qe working?nding trillions of dollars to buy up bond from the market, is it working to improve the economy? isn't that the real question at heart of all this? >> that's correct. but i view qe entirely different way. jump in rates last may and june show the way the fedorged qe is working is simply incorrect. qe is working as announcement about the funds rate policy. it's like ernest money or like what economists call a commitment mechanism. as long as qe is in place, the fed won't be raising rates. so they have create ad problem for themselves because they realized that central bank can't continue forever buying 85 billion. a month. it is just not working as advertised. doing something different that has create ad trap for themselves. david: and jon, bill has been very eloquent in written arguments against qe, as being a panacea, cure-all for the economy. the clear point he makes which is indisputable, the banks are stuffed with cash right now. so what good does it do for the economy to keep print