It is indeed an old saw that “to measure is to know”. In the well-known story of Alice in Wonderland, she reaches a fork in the road and asks the cheshire cat as to which way she ought to go. The cat, like a well-trained bureaucrat, purrs that it depends a good deal on where she wishes to go. “I don’t much care where -” Alice replies, at which the cat chips in with: “Then it doesn’t matter which way you go.”… (more)