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It has yet to be proven that intelligence has any survival value.
柠檬问题发生的原因是卖家比买家更了解产品,从而导致市场失灵。
The dominant kind of snobbery that exists nowadays is job snobbery. You encounter it within minutes at a party, when you get asked that famous iconic question of the early 21st century, "What do you do?" According to how you answer that question, people are either incredibly delighted to see you, or look at their watch and make their excuses.