事实是，我们对生活知之甚少，我们真的不知道什么是好消息，什么是坏消息。
释义：通过分析物品的过剩与短缺，就能判断其价值的高低。这句话揭示了市场供求关系对价格的影响。
Identity politics has become a dominant force in contemporary politics, driven by the desire for recognition and dignity.
The market is always changing, but the constant is a deep understanding of customer needs.