The problem with racism is the confusion of correlation and causation. To state that “blacks score lower in IQ” is to imply that being in the Venn Diagram circle “black” automatically lines you up with a “lower IQ circle.” But, besides the sheer difficulty of defining racial categories in the first place, this ignores that there are other factors in which you can group people which will cause those circles to line-up far more accurately. Particularly ones based on environmental pressure of a person’s ancestors. If a group is put into a position with forced manual labor without self-determination or decision-making, the genes that make you more physically capable will tend to cause longer survival and thus more reproduction and spreading of those genes in comparison to ones that aid mental calculation.
The same is true on the other side of the spectrum if you are are forced into a situation where mental calculation is emphasized, such as rice farming or financial work.
To group these characteristics by “race” is to imply an incorrect source. Decisions made based on these incorrect assumptions cause very bad things to happen.
Hi Azathoth,
If you google “Does Race Exist” you’ll get a number of results from Nova, Scientific American and other sources that describe this with much more detail than I could in my available time.