In the era of Warren Buffett's life, the United States witnessed the launch of the first Sputnik by the Soviet Union, experienced the social unrest of the 1960s, was plunged into the Vietnam War in the 1970s, triggered the collapse of the Bretton Woods system, was powerless to face the aggressive expansion of the communist Soviet Union, and had no choice but to extend an olive branch to Beijing. ...... Each of these events created huge waves in American society, shaking people's faith again and again, and even some of the so-called social elites began to question the system: the market economy is no longer working, and the Soviet-style planned economy is the hope for mankind ......