[nugget]

I used to believe everything you’ve stated until I dove into the twin studies, and more recently the GWAS data from Europe. Read the literature yourself with an open mind and you may be surprised. Ironically, as society has become more environmentally equal, ie the decline of lead, pollution, and clinical malnourishment, Nature has pulled even further ahead of Nurture, because it’s much easier to remove IQ points than to add them.