The development of computational complexity theory has shown us that not all problems are created equal.
计算复杂性理论的发展向我们展示了并非所有问题都是平等的。
保持冷静,但要关心。
I don't regret the things I've done, I regret the things I didn't do.
仅仅观察、实验、理论化和计算是不够的。人们还必须想象。