The fetus would probably not have3 survived. You can't just make the brain bigger and expect everything else to work out. Example problems: skull too small, eye

The fetus would probably not have3 survived. You can't just make the brain bigger and expect everything else to work out. Example problems: skull too small, eyes and everything around the brain would have to be reconfigured, heart/blood supply would have to be reconfigured, etc etc. Some examples of how this goes wrong in humans (graphic): https://en.wikipedia.org/wiki/Anencephaly https://en.wikipedia.org/wiki/Anencephaly