Science tells us that "species" as a term is highly overrated and grossly misunderstood. But by no definition are different kinds of humans anywhere near to being different species. You might describe them as different varieties, at most.
This is the type of meaningless, muddying-the-waters handwave I was talking about. It doesn't matter what you call the different animal group: species, haplogroup, ethnicity, race, "bunch of people who vaguely stayed in this geographic area for this length of time." At the end of the day you have a group of animals to which a different selection pressure was applied over tens of thousands of years, which results in different traits.
Unless of course, man is some kind of magical animal where populations can be separated by 50,000 years plus, and yet have the only changes be cosmetic. How did that happen? Was it God?
The things about them that needed to change will have changed. The things that didn't mostly won't.
Intelligence is good for you no matter what your situation, and strength and speed don't preclude intelligence.
Intelligence being good for you is not the same as stupidity being bad for you. We generally talk about selection pressure working against a trait, not for it. A seasonal climate with harsh winters that needs to be prepared for selects against those who cannot engage in long term planning. In a temperate or tropical setting with food available year-round low intelligence isn't selected against.
Also, stupid people have intelligent children, and vice versa.
What is regression to the mean.
For instance, in the United States the average IQ for blacks is 85, 92 for Latinos, 100 for whites, 108 for asians, and 115 for Ashkenazi Jews. This correlates very well to income levels for each group.
Correlation, he said, is not causation. That's a sophomoric error.
But correlation is required for causation. Are you suggesting intelligence is irrelevant to income-earning potential for most people?
Is this just a kiddie troll?
There's that ad hominem. Please argue science instead of your politics.