[jacobwilliamroy]

I agree in the real world, I can send a swab of spit to 23andme and get a guess as to where my ancestors were. I could also send a swab of spit to ancestry.com and get a completely different guess. These services are not precise, and even if they were, race and ancestry are not tightly coupled. Race is phenotypes, color of skin, shape of nose. Gene expression is a crapshoot, with the number of genotypes often dwarfing the number of phenotypes, racial features can skip generations or disappear entirely. My grandfather had white skin, a sharp nose, yet none of these features were passed on to me. Ancestry (genetics) and race (gene expression) are not tightly coupled.

I do think that ancestry can provide valuable insights into one's self, however I'm still not sold on the necessity or reality of race. Ancestry is not written on a person's face.