I didn't mean to offend, but I think it is fair to state that the social right in most countries gravitate towards ideas about ethnic purity and cultural homogeneity. The thing that annoyed me the most about Putnam is that he seems to entertain the idea that diversity is "bad". IMO he should be using these findings to suggest educational programs teach people about tolerance. Just because humans are evolutionarily programmed to use phenotypes as cues for social kinship, it doesn't mean that we can't create a world that accepts and embraces diversity. Our evolutionary history has left us with a lot of genetic baggage that we must overcome by embracing inclusive cultural attitudes and ingraining the notion that we are one species; not several divided races and ethnicities.