PAC学习框架提供了一种正式的方法来分析学习算法的效率和有效性。
恐惧风险的本能，反而让穷人承担更大风险。
故事有能力改变我们看待自己和他人方式。
Technology alone won't save aquaculture—people with vision will.
The most hateful thing for a man is to have knowledge of everything but power over nothing.
