it's an interesting thing, alan krueger and i did a study on this, and over a decade probably half ofmericans would at some point use the tax credit. one thing about in the country is there are certain things that people may initially think are for other people, but did they find over time they can be very helpful to them and their families as well. so i think when you have over 100 million people getting protection of preexisting conditions, i think when you have people under 26 on their parents coverage, and when people are seen, the stories of people unexpectedly were diagnosed with cancer were able to get affordable treatment it wouldn't have been able to, i think simply saying we're going to repeal it is going to be less and less tenable. so that's my first response. in terms of the challenges of implementation, one of the things i think that everyone, if they are being fair, has to recognize is the simple victim, that hard things are hard. but very positive, great change can be hard but it doesn't mean it's not positive and good for our country. look at the status quo. is the st