There is another thing with those traits that we so easily observe in each other that I think is worthwhile to consider, and that is that, in a very literal sense, they're really on the surface of our bodies.
그런데 이와같이 우리들이 눈으로 보고 금방 알아볼 수 있는 유전적 특징은 문자그대로 피부 한꺼풀에 그친다는 것이죠.