"It's really easy to make a kernel once. It's really hard to do something over time, constantly, repeatedly, that's stable and works for everybody."

做一次内核很容易。日复一日、不断重复地做一件稳定且适用于所有人的事，真的很难。

—— Greg Kroah-Hartman，Linux Fellow

这句话是本场唯一的引子：难的不是创造，是持续。