光是上帝的画笔，每时每刻都在描绘世界。
关于图形：一张图片价值一万个单词-但仅用于描述图片。几乎没有任何10K单词集可以用图片充分描述。
The past is not dead, it is not even past.
If you do something once, people will call it an accident. If you do it twice, they call it a coincidence. But do it a third time and you've just proven a natural law.
The difference between correlation and causation is not just academic—it can have profound policy implications.