We have a lot of people revolutionizing the world because they've never had to present a working model.
我们有很多人在改变世界,因为他们从来没有提出过一个可行的模式。
-- Charles F. Kettering 查尔斯·凯特林
We have a lot of people revolutionizing the world because they've never had to present a working model.
我们有很多人在改变世界,因为他们从来没有提出过一个可行的模式。
-- Charles F. Kettering 查尔斯·凯特林