遇事要再三考虑，慎重行事，第一重要的是不要自欺欺人。

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.

大多数人的问题在于他们用希望、恐惧或愿望来思考，而不是用他们的头脑。