> The early environmental deficit appears to be ameliorated with time and
> exposure to more environment.
Not exactly. Children do not chose their parents/schools/environment. But adults are free to seek out an environment that suits them. Thus they eventually go in the direction they were genetically disposed to go in the first place.
I.E. they become the type of person they were genetically meant to be.
And if I had my way, the education system, would focus on helping children discover what their natural inclinations and interest are, and pair them up with a mentor who would help them develop those inclinations.