The complexity of a learning problem is often determined by the size and structure of the hypothesis space.

在计算学习理论中，挑战不仅仅是学习，而是理解学习是如何可能的。

Art is not what you see, but what you make others see.

I don't know why people hire architects and then tell them what to do.

自由贸易能够提高国家整体的生产效益。