巨大不再是任何城市组织的一部分。它存在；最多，它共存。
Bigness is no longer part of any urban tissue. It exists; at most, it coexists.
The power of abstraction is that it allows us to reason about systems at a higher level, without getting bogged down in the details.
计算机能否思考的问题就像潜艇能否游泳的问题。
The more you know, the less you need.