Thank you for this detailed assessment. It would seem that part of the misunderstanding is that facts are sometimes conflated with opinion. My responses in this thread have focused on the history of scientific racism (eugenics, which I note was debunked) and the prevailing scientific view of the past century about the impossibility of getting scientists to agree on specific genetic categories of ethnicities. For example, you can indeed use genetic clusters to determine the percentage of caucasian or african, but this isn't the problem. The problem is working with the social construct of race. For example, who will arrange the agreement on the specific genetic percentages of caucasian or other supposedly "white" ethnicities that would determine a person is "white"? Scientists do not agree on how this could be done. See for example the links I posted in this thread:

https://pubmed.ncbi.nlm.nih.gov/1738862/

https://pubmed.ncbi.nlm.nih.gov/26270337/

https://abcnews.go.com/Technology/story?id=98485&page=1

These are not my opinions. I am merely noting what's in the scientific research. DAR (and right-wing propagandists) can take up their interests in re-starting scientific racism with the scientific research papers.

My view is that we should understand the limitations of science for determining ethnicities and of social constructs like racism. My personal opinion is that we should not work so hard to try to put people in categories, especially because of the ways in which those categories are inevitably misused for unethical purposes. If one wants to argue for the scientific foundation of racism, the responsibility is on that person to provide facts for that argument (rather than opinions), and where possible, note the purpose of the necessity of re-starting eugenics (which was appropriately abandoned in the early 20th century).

One of the reasons I return to Saidit is to see if there are any interesting debates, especialy regarding factual errors. If there are no debates I won't return. On some days it's rather quiet.