Nunchi is a guiding principle of Korean life, considered essential for survival, happiness and success. Roughly translating as self-awareness, Nunchi is the art of a reading a room and using that knowledge for the good of everyone in it. Korean-American author Euny Hong has written the ultimate guide to this secret skill, The Power of Nunchi. In today's show, she talks to Róisín about good and bad nunchi, the difference between nunchi and empathy, and how anyone can learn this superpower the Koreans see as an essential life skill.