If you're not failing every now and again, it's a sign you're not doing anything very innovative.
如果你能够察觉我是了解你的那个人,那为什么我一直在这里,可是你却总是视而不见,你应该和我在一起。
我看到了,我忘记了;我听到了,我记住了;我做过了,我理解了。