just as we know that Anglo-Saxon, Slavic and Germanic tribes were once considered to be the dumbest by the Islamic golden age.

The time of the Islamic Golden Age (falsely called Islamic in my view) was also the Golden Age of Anglo-Saxon culture, so this was very much unmerited. But there is one Islamic commentator who said that the more north you go in Europe, the paler they get, and also the dumber they get.

What this shows, however, is that no race is inherently superior consistently, or that even smaller subsections under race have vastly different results due to better practices over generations.

Let us hope so, because if racial inequalities are permanent, then almost every Western country is going to be in a state of perpetual racial strife and civil war.

There is a slight difference though between people in tribal societies being stupid and today. Of course, if a people lives in condition of pure savagery, then the intellectual achievements are not going to be impressive. But when you have all the opportunities in the world, and still score so low, then that becomes more troubling.