“The gist of this article is that the criteria popularly employed to distinguish “race” or to categorize people according to “race” are as arbitrary and unscientific as categorizing people according to right-handedness, blood type, or their preferences in pizza toppings.”
Read The Bell Curve. It scientifically concludes otherwise.
I have read it - but if I were to argue in favor of the concept of "race" (i.e., that it is NOT 90% a mere construct), then I would cite data on the distribution of pigmentation, dolichocephaly / brachycephaly, blood types, etc. - long before I resorted to such debatable findings about I.Q.
Indeed, the Bell Curve is predicated on the concept of "race" - it assumes it a priori - and so to refer to it in this discussion is to commit the fallacy of petitio principii.
Regards,