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.

宇宙是由数学定律支配的机器。

The past is a different country, they do things differently there.

挑战是伪装的机会，勇敢地拥抱它们。

生活就是塑造你自己。

Think you're escaping and run into yourself. Longest way round is the shortest way home.