In our business, you got to be inventing new things because software doesn't wear out, it doesn't break, or at least if it breaks it was broken when you finished it, it doesn't break over time the way physical goods do.

在我们行业，你需要不断发明新事物,因为软件并不会磨损，不会坏，或者至少如果坏了,也是在你运行完之后，它并不像物理上的东西会随着时间磨损。

斯坦福公开课 - 微软CEO-Steve.Ballmer谈科技的未来课程节选