分布式系统是指一个系统中，即使是你不知道存在的计算机发生故障，也可能导致你自己的计算机无法使用。
Technology should serve the forest, not dominate it.
Make decisions when you are ready, not under pressure. Others will always push you to make a decision for their own purposes, internal politics, or some other external need. But you can almost always say, “I need a little more time to think about this. I’ll get back to you.” This tactic is very effective at defusing even the most difficult and uncomfortable situations.
计算复杂性的本质是理解什么可以被有效地计算的极限。