I have a lower intellect and I am cognitively deficient and because of this life has been a real struggle to navigate and I do think that the G Factor definitely exists, I have noticed it within families but personally I think that environmental factors especially lead and the way that we consume food, social deprivation and epigenetics coupled with foetal development is probably the biggest factor and these environmental factors especially (just in my opinion) is that heavy metals causing Autism and ADHD etc which seems to be to some degree correlated with higher intelligence has resulted in a lot of these disparities throughout society. Even though I have a low iq and would love a pill to make me smarter I do worry about messing about with this because humanity seems to really miss the mark when it comes to finding balance and doing what's right for our species as a whole and throughout history nefarious individuals take what should be used for good and turn it into something quite dangerous sometimes. So I have my reservations but I stay optimistic about the future. I've found this interview incredibly interesting.