Trust the science unless you don't like the outcome?  There's clearly a connection between intelligence and genetics just as there is a connection between athletic ability and genetics.  How much?  We don't know and there is no willingness to find out.  Nature vs. nurture.  Nobody wants to research it.  Who can blame them?,(reply>), So Haier says on the question about what research supports that notion. That there is little to none. He also says clearly that it is just his personal belief and that he has no clue about genetics. So what do you know that he does not?