A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
生活就像在博物馆里走过场,要过一阵子你才开始吸收你的所见,思考它们,读书了解它们,记忆它们——因为你不能一下子全部消化。
Go for a business that any idiot can run – because sooner or later, any idiot probably is going to run it.
"The study of mind must be grounded in biology."
真正的竞争不在企业之间,而在技术与视野之间。