有些人learn the hard way,有些人一辈子都过不了 I know that I don’t know 阶段。
“The Four Stages of Life Cognition”
1. Ignorance Stage — I don’t know that I don’t know
2. Awareness Stage — I know that I don’t know
3. Learning & Understanding Stage — I know that I know
4. Wisdom & Transcendence Stage — I don’t know that I know