在我看来，妒忌是一种消极有害的情绪，常见于那些心胸狭隘、视经济活动为一种零和博弈的人。
It strikes me as a negative, destructive emotion, usually possessed by small-minded individuals who see economics as a zero-sum equation.
1928年，即纳什出生的那一年，冯·诺依曼概述了最早的正式博弈论，表明，在两人的零和博弈中，向来存在一种均衡。
In 1928, the year Nash was born, von Neumann outlined a first formal theory of games, showing that in two-person, zero-sum games, there would always be an equilibrium.
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