“In New York, you can talk to anyone about anything at any time and have a conversation so long you’ll fall a little bit in love with that person, and then never see them again,” she told me. It now feels strange to her that in Korea, if you try to strike up a conversation with someone you have not been introduced to, people look at you as they would at a large rat, but if even the flimsiest of introductions is made by the most peripheral of acquaintances, they fuss over you like a long-lost sibling.