计算复杂性的本质是理解什么可以被有效地计算的极限。
The essence of computational complexity is to understand the limits of what can be computed efficiently.
The most effective way to help the planet is to stop eating animals.
所以江河不嫌弃小溪的水来灌注,就能汇成巨流。被称为圣人的人,不推辞难事,不违背物理,所以能成为天下的大人物。