Summary on Cynthia L. Selfe's "Lest we think.." -emily

In Cynthia L. Selfe's "Lest we think the revolution is a revolution", I see Selfe as trying to explain that our recent technology is shaping how our world revolves. How we portray ourselves, and how we are portrayed or viewed. That with our technology we, men, women, black, white, are able to be equal, although the advertisements show a difference in this. Through the advertisements Selfe shows, we are reminded of an old America. An America where gender roles exist, where color matters. Women are sought out to be the homemaker, the sex. Men are the hard workers, the breadwinners, anything that they want to be. Cynthia also points out that the technology we have today is allowing us more freedom. Maybe to break away from the "old America". Students learn just as well by computers than sitting in a classroom. There is just as much or more that we can gain from the use of a computer. To me Cynthia Selfe's article is mostly about the way we are seen through this "revolution" and how we have grown as a society but to what extent?

She claims on page 304, "that America is the land of opportunity for only some people". Her reasoning behind this is the history of slavery, the graduation rates compared between blacks, whites, and Hispanics, the fact of never having a woman president, and the high security + barbed wire fences over the Rio Grande.
But Why should this be the case? Why should these be the reasons for why America is the land of opportunity for only some people?