&gt; It&#x27;s almost entirely nurture<p>It might depend on what variables you&#x27;re referring to, but according to some famous studies done on identical twins separated at birth; intelligence and personality are about 70% genetic and 30% environment. While these studies conclusively suggest that it&#x27;s actually &#x27;almost entirely nature&#x27;, I agree that the potential 30% disadvantage is something that can and should be fixed.