>> medich here is the program for the poor in this country, -- medicaid is the program for the poor iny, and keep very poor and likely the mothers and the children. it is very unusual that a single adult would be eligible for medicaid in this country. it is primarily moms and their kids. greta: so we are taking care of the very poor. they are ok. and then we are taking care of the oldest. so the ones we have to take care of our the 18 to 25, the invincibles, and then the older people, 45 to 65, those people. how many are in the 45 to 65 group? >> the 50 to 65 age group is approximately 25% of the total number of uninsured. that is a chunk. greta: so those are people who need it. efficiency in a big part of this problem? >> yes, an enormous part of this problem. it is hard to believe, but in the united states of america, which do not necessarily get the best care. if you look at what we spend per capita, which is way more than anywhere else in the industrial world, whether you're talking about more obesity rates, other things, there is efficiency, duplication, how many times you go to t