The difference between an ordeal and an adventure is your attitude.
The oldest and strongest emotion of mankind is fear, and the oldest and strongest kind of fear is fear of the unknown.
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。
机器学习算法的最终测试是它在新的、未见过的数据上表现良好的能力。