People who decry the fact that businesses are in business "just to make money" seldom understand the implications of what they are saying. You make money by doing what other people want, not what you want.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

You never know with these things when you're trying something new what can happen. This is all experimental.

互联网的未来不在于技术，而在于人。