That's a problem of attitude, not genetics. A person born in Korea can become American, British, Swedish, Singaporean, Brazilian, etc. There's no fundamental re

That's a problem of attitude, not genetics. A person born in Korea can become American, British, Swedish, Singaporean, Brazilian, etc. There's no fundamental reason why it wouldn't work the other way if Koreans wanted their society to be open to newcomers. With shrinking population they may want to have that national conversation eventually. Anyway, when you bring in young single people, the primary cultural diffusion is through their eventual children. They will be Korean in a way that the immigrant parent might never personally feel.