This really gets to the heart of the matter. Harvard wants to increase its prestige, and it does so by having future CEOs, Senators, and Presidents go to Harvar

This really gets to the heart of the matter. Harvard wants to increase its prestige, and it does so by having future CEOs, Senators, and Presidents go to Harvard. But the distribution of potential leaders of society is not equal to the distribution of top GPA/test scores. Should Obama have been passed over from Harvard Law for someone with a higher GPA (or GW Bush for Yale)? If you want to argue that Harvard should only use the grades/test scores metric, you have to argue for it, as it is not self-evident.