[Out_of_Characte]

Biological evolution is also impossible to measure on small timescales. that does not mean it does not exist, clearly it exists. It has an exponential effect on the future. I think we fully agree on this definition.

>as people and societies become wealthier and better educated (both correlated with intelligence), their reproduction rates drop precipitously.

There is also the unmistakeable influence of evolutionary psychology on people throughout human history, that seems to have accelerated. When people decide to have fewer kids, especially the more affluent ones, doesnt yet point to any biological influence. Other than the correlation between wealth, IQ and genetics. I dont think there are any risks of a reduction of intelligence through evolution. The world population reduction we're seeing might accelerate it instead.