alt Hacker News> IQ is almost entirely hereditary
Do you have a credible source? Average IQ being much lower in poor countries (85-90 in many African countries) is usually explained away as an education problem, rather than being "inferior genes". Of course I understand that this explanation might be more for social/political reasons than scientific ones, because the alternative is racism, but I was still under the impression that nobody knew how much genes vs the environment contribute to IQ. Yet your statement seems quite definitive.
There's no such thing as "average IQ by country" as a statistic accessible to researchers. The work to create it has never been done; the resources that claim to provide it are essentially fraudulent.