will help you to buy an insurance policy from a private insurance company. that's not the promise of medicare. >> in terms of the economics of a voucher proposal like that, in human terms it's harm to imagine. i imagine myself 88 years old, and i'm going to get a coupon and shop on the private a coupo shop on the private market for insurance because i've got a discount coupon. maybe somebody will want it 0 pick me up to get private of insurance. it's hard to imagine on human terms. in economics terms, is there any reason to believe that putting people into the private market with some sort of government subsidy like that would be more efficient and bring down costs in a big is sense? >> this is amazing thing. this is a case where severitiatives and especially the extreme ones won't take no for an answer. we have lots of head to head comparisons of private insurance versus government programs. and the private insurance always ends up being more expensive. you can see that we've got medicare advantage running medicare through private