In the context of computational learning, the concept of 'probably approximately correct' (PAC) learning provides a framework for understanding the efficiency and feasibility of learning algorithms.

I believe in the power of love and music to change the world.

The effects of policy changes are often more nuanced than simple economic models suggest.

The power of suggestion can significantly alter our perceptions and memories.

成功在于做出正确的选择，而不仅仅是努力工作。