If you lived in a world divided into levels based on "cognitive efficiency," would you choose to climb to the top, or protect those souls judged to be "abnormal" by the system?
Lin Chuan is a technician at the basic executive level, living in a "cognitively stratified society" in the mid-22nd century. Human beings are divided into three major layers by the system based on thinking efficiency: gray (execution), blue (professional), and gold (coordination). Low-level people live under an information filter and think the world is so simple.