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The Pareto principle (also known as the 80/20 rule, the law of the vital few and the principle of factor sparsity[1][2]) states that for many outcomes, roughly 80% of consequences come from 20% of causes (the "vital few").[1]

Liu Cixin is a Chinese computer engineer and science fiction writer. He is a nine-time winner of China's Galaxy Award and has also received the 2015 Hugo Award for his novel The Three-Body Problem as well as the 2017 Locus Award for Death's End. He is also a winner of the Chinese Nebula Award. In English translations of his works, his name is given as Cixin Liu. He is a member of China Science Writers Association and the vice president of Shanxi Writers Association. He is sometimes called "Da Liu" by his fellow science fiction writers in China.

Cognitive biases are systematic patterns of deviation from norm and/or rationality in judgment. They are often studied in psychology, sociology and behavioral economics.[1]