When you can measure what you are speaking about and express it in numbers, you know something about it. But when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind.
——Sir William Thompson, Lord Kelvin
(1824-1907)
当你能够衡量你所谈论的事物,并用数据进行描述时,你对它就有了一定的了解。如果你不能,那么你的认知还十分浅薄。
——开尔文勋爵