Humans aren't so special. We are certainly constrained by the same things other mammals are. Well, it absolutely applies to us. Then comes the conclusion that perhaps has drawn the most interest to Krubitzer's work. Our future evolution, or more precisely our nervous system evolution, is highly constrained.
Evolution is a tinkerer.
But there are a limited collection of pieces and bits that it can make something with. I can't predict what's going to be selected for and selected against because I don't know what the future holds. But I can tell you how your brain might change. I can tell you what you won't lose. I guarantee it.