Q47： 如果你能衡量而能用數據表達你所說的，就表示你知道你在說甚麼，否則你的知識是貧乏而且不完整。

這是原自於Lord Kelvin (1883)所說的話："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 knoledage is of a meager and unsatisfactory kind."這則諺語是『軟體度量』的基本之一。