We've done price elasticity studies, and the answer is always that we should raise prices. We don't do that, because we believe -- and we have to take this as an article of faith -- that by keeping our prices very, very low, we earn trust with customers over time, and that that actually does maximize free cash flow over the long term.

A great editor knows when to hold back and when to push forward.

在科学领域，每一个被回答的问题都会引出十几个等待探索的新问题。