This book provides real stories about the South Korean semiconductor community. It explores the lives and careers of six influential semiconductor engineers who all studied at Korea Advanced Institute of Science and Technology (KAIST) under the mentorship of Dr. Kim Choong-Ki, the most influential semiconductor professor in South Korea during the last quarter of the twentieth century. Kim’s students became known as “Kim’s Mafia” because of the important positions they went on to hold in industry, government, and academia.