优化不是追求完美，而是在现有信息和资源下做出最佳决策。

Don't write your name on sand, waves will wash it away. Don't write your name in sky, wind may blow it away. Write your name in the hearts of people, that's where it will stay.

人类并非厌恶工作。根据可控条件，工作可能成为满足感的源泉，也可能成为惩罚的来源。