Apples and oranges
If you can't see the obvious explanation for that contradiction, you are in denial.
I was able to have input at a different site when this thread was pulled earlier, and I will repeat just one of two thoughts here.
It has been demonstrated ad nauseam that closed societies tend to degenerate biologically. Even Caucasians.
The most dynamic and inventive societies are genetically heterogeneous. Why must we accept that African tribal societies (closed, by definition) are immune to that biological discovery?
(I was called a racist and neo-nazi enabler for pointing that out (in between a whole lot of cursing).)
I hope Free Republic represents a more informed and rational population.
I will leave it at that.
I never said anything about any explanation, let alone whether I could see it or not.
Since I never said anything about any explanation, how can you tell I am “in denial” about it?
All I did was report a number.
The expression “apples and oranges” means that someone is asserting some sort of similarity between two classes of things when those two classes are in fact radically dissimilar.
I wasn’t asserting any similarity or comparison at all. American Blacks and African Blacks have different median IQ’s. If I was comparing them at all, I was asserting that they are different.