i just really wonder, are you selling bookingses, or is this -- books, or is this a serious economic thesis? >> let me take the three questions in turn. so with genetic selection, like, if all you are doing is selecting between embryos, complications related to ep igenetics need to the not -- need not bother you. i mate be you'd only -- it may be you'd only capture a part, but you could get some of the way to enhancing the genetic predisposition to intelligence. if you develop more advanced genetic technologies where you could also say i understand how methlation works and engineer that, then maybe you could get farther. even without making an assumption about that, you could still be confident you would get part of the way. with regard to henry markham's project, i said nothing, and i have really no opinion about whether that's worth while or not. i just point out that at some point with advancing technologies in these different fields, it lookslike -- [inaudible] -- it looks like it should succeed. that's consistent with it being a complete waste of money to try to do it anytime so