This would only be true if affirmative action were carried to the point where the percentage of black students in the elite schools exceeded the percentage of blacks in the general population. I don't have the numbers handy, but I did go to grad school at an Ivy, not terribly long ago, and that does not match my recollection of the racial make-up there. The undergraduate ranks seemed to be dominated by rich white kids.
but I did go to grad school at an Ivy, not terribly long ago, and that does not match my recollection of the racial make-up there.
Yes, affirmative action isn't used for grad school in STEM fields (at least for now).
Suppose I told you that I knew for a fact that the following statements were true:
You’d think I was crazy, right?
Now suppose it were the year 1901, and you had to choose between believing those statements I have just offered, and believing statements like the following:
Based on a comment of Robin Hanson’s: “I wonder if one could describe in enough detail a fictional story of an alternative reality, a reality that our ancestors could not distinguish from the truth, in order to make it very clear how surprising the truth turned out to be.”1
1Source: http://lesswrong.com/lw/j0/making_history_available/ewg.