You haven't demonstrated at all why ignorance will stop people from being racist or sexist or thoughtless, so you haven't made the case you seem to think you have.
No, I'm saying that there is a demonstrated causal arrow from genes to intelligence. The evidence is less clear on the causality of social class and intelligence, however, so simply asserting it as a causative factor is…
You haven't demonstrated at all why ignorance will stop people from being racist or sexist or thoughtless, so you haven't made the case you seem to think you have.
No, I'm saying that there is a demonstrated causal arrow from genes to intelligence. The evidence is less clear on the causality of social class and intelligence, however, so simply asserting it as a causative factor is…