with discuss all of this brian chappatta, who wrote so eloquently about all of this. what is sparking this? is there talks of bubbles, worries about financial stability? >> when you start to see fed officials come out a little bit they otherwisean would, he started see undertones of bitcoin surging, tesla surging, the bubble talk is pervasive right now throughout market. but there also forecasting a much better growth outlook for 2021, seeing the back half of the year being strong. that is why a lot of these officials are calling on the idea of tapering their purchases. they are getting the markets see theble, we start to labor market improve and growth take off, you should not expect 80 million in treasuries and 40 billion of nbs every month going forward. romaine: the bubble aspect, if that is true, why is there concern now. monthsn't there concern or years ago? brian: the one thing that jerome powell has made clear is that they don't have a set asset price target where they say, this is too high. but when you look at the indexes , whether it is bloomberg or sachs,s