>> well, the score problem which is stanley kaplan's high school version and sell them learning and many other lending institutions are all claiming to teach the s.a.t. judging by this data here, they have not succeeded. and they have enormous incentive with the money back guarantee to improve those scores. >> erased a great issue. let me put it another way. what do we really need to do to raise the scores? i think you talked about raising the iq and charles murray. of course i want to stay away from that issue and decline but i told him frankly that i couldn't do it because i thought he didn't observe the distinction that psychologists observed between fluid and crystallized intelligence. that is behind your normal inborn sort of abilities and your achieved abilities after you are educated. and knowledge makes you smarter. that's an interestingly documented fact so that you get smarter when you know more and charles murray didn't take that into account. and so, there's this problem with murray's analysis, let's not worry our heads about this. but how do you change that? you have a more