what does that mean?

people from the midwest and south are largely not represented in sv companies. sv has done a great job at basically hiring the same type of person over and over. I believe this is mostly because of their preference for a narrow set of universities, among other things.

It's more of a gap between the educated in the useful fields vs everyone else. And it's not going anywhere. The people who don't have the capacity to learn complex and useful things are left behind in our quickly accelerating world.