dr. colburn. how do i do what i need to do that's both efficient and effective? what drives me to do that? blue cross/blue shield knows my profile as well as every other insurer in oklahoma. they know whether i'm an efficient physician. they know whether i order excess tests. they actually have a profile -- every insurance company in this country knows everything about every doctor's purchasing habits. they actually measure each doctor by what it costs them to care for an identical diagnosis. one of the things that's happening to medicare patients, because doctors are opting out, the people who are not opting out of medicare are not the best physicians. the ones that are opting out are the wunones that don't need medicare patients. so market forces should reward doctors who are efficient, and get there. well, who knows that? medicare knows it, too, but you know it's anybody that wants to -- as long as you qualify for medicare, you're eligible, you're going to get paid. there's no market force on the quality of the physician, but there is, if i'm way outside for b