【格言】如果你沒辦法解釋給六歲孩童聽，表示你自己根本沒搞懂。  posted on 2017/01/01 (  810 )

如果你沒辦法解釋給六歲孩童聽，表示你自己根本沒搞懂。

If you can't explain it to a six year old, you don't understand it yourself.

-- 亞伯特．愛因斯坦，相對論之父