Be prepared: When you are 90% done any large project (a house， a film， an event， an app) the rest of the myriad details will take a second 90% to complete.
真假的问题始终存在，但并不总是可以回答的。
学习如何制作电影的最佳方法就是去制作一部电影。
The key to artificial intelligence has always been the representation.