Day 2 companies make high-quality decisions, but they make high-quality decisions slowly. To keep the energy and dynamism of Day 1, you have to somehow make high-quality, high-velocity decisions.
Program testing can be used to show the presence of bugs, but never to show their absence!
算法的真正力量不在于它的速度或效率,而在于它揭示所解决问题隐藏结构的能力。