Quote (JessiWan @ Mar 1 2023 02:52am)
Note I didn't ask, "is intelligence heritable". Because I already know that it's heritable. The only question is to what degree.
Personally I believe that intelligence has an overwhelming biological basis. In other words, how smart you are is largely determined by your genes. Your parents could try to enrich your environment as you grew up, but it won't make you smarter. It will only make you more knowledgeable, or more worldly, or better at taking tests. However your actual intelligence won't become higher to any noticeable degree.
What follows from this is that there are some people who are naturally stupid. And it's because their genes bestow lower than average level of intelligence on them. And if these people somehow manage to procreate and pass on their genes despite their stupidity, then you will have kids who are stupid too. And when you do this for enough generations, and I mean many, many, many generations, then you will wind up with a stupid human population group.
And races are population groups. So, what does this tell us?
I am extremely sure that intelligence is VERY heritable and what you describe is very true and to some degree true already. Its proven that people have more kids the lesser their IQ is and that the peak of human intelligence is already past us.
Theres a funny movie about that topic. Its called idiocracy and its of course an immense exaggeration, but its basically exactly about that. Worth a watch for sure :-)