@thor

IQ is still relatively new from evolutionary point of view I guess. And maybe not the best trait for evolution too.

What we observe as periodic cycles of great progress and equally dumb regress of human societies could be simple regression to the mean.

The thing is that for a long time we haven't been living by plain rules of evolution, so what you do with your life is largely (but not completely obviously) your choice today, which is a great achievement already.