Much of our understanding of the brain is changing rapidly. Some people say we have learned more about the human brain in the last 5 years than the last 5,000 years. There is still much to learn.
I believe that understanding how to fix or prevent the illness of Schizophrenia is so difficult to understand that we will travel in time and space before we really understand how the human brain works in its entirety. I am not convinced society will last long enough for that to come true. I would hope to be proved wrong though.
I also worry about what evil could occur in a society with the technology and understanding to be able to accomplish this. Many of the things that are designed to help a small part of society can be detrimental to most of society. This is evident with computers which have immensely empowered or at least have the potential to empower many people with diverse disabilities.
But our over reliance on computers and or inability to defend our wealth that we store in this technology could make it easy to lose our entire technological and social base. If and when this happens modern medicine and psychology could disappear and this would be a grave loss for the weakest part of the population. Everything has a cost.