NP完全性的概念为理解计算问题的复杂性提供了一个强大的工具。
The concept of NP-completeness has provided a powerful tool for understanding the complexity of computational problems.
Listen to everyone in your company and figure out ways to get them talking. The folks on the front lines—the ones who actually talk to the customer—are the only ones who really know what's going on out there. You'd better find out what they know.
引用自本杰明·格雷厄姆，但斌常引用此句强调长期投资的重要性。
我们所知道的很少，我们所不知道的却是无限的。