. >> however look at it, harvard economist howard rogoff, co-author of the new york times best seller this time is different. eight centuries of financial folly. he joins us from watertown, massachusetts. good friend of mine. ken, what do you marine, public relations move? >> they said they were going to do it and it would have confused the heck out of people if they didn't do it. you said ali it's a modest like. if you are buying a car you borrow $10,000. this is going to add $2 a month to your payment. i don't really think you know that's going to be decisive for very many people. but if something goes wrong in the u.s. economy, there's a flu epidemic and it's a cold winter and people don't get as many jobs, the fed will own it and i think that's where they're being very cautious. because the interest rate is still very, very low. >> it's been a long time since you've had good -- you can dispute whether it's good for everybody but we've had measurable growth for america. and the fed, they are running out of tools. if you got zero interest rates, you can't stimulate the economy that