We think that we know a little bit about how to raise intelligence. Just turn down the suppression of early CNS growth. If you do that in one way the eyeball grows too big and you are nearsighted, which is highly correlated with intelligence.

That's interesting. I found a 2006 paper which argued that a genetic mutation is responsible for myopia, and that it also increases intelligence, but the specific gene and mechanism involved were apparently still unknown at that time. Has there been some more recent research results on this topic?