So you CAN manage what you can't measure?

If You Can’t Measure It, You Can’t Manage It.
Many of us have heard of the phrase, "If You Can’t Measure It, You Can’t Manage It." It's a fun quote, and is becoming increasingly popular in this age of big data. It also has a halo of authority to it, having been attributed to gurus like W.E. Deming or Peter Drucker. I was going to use it in a paper, and casually figured I'd find out who (if either of them) actually coined the phrase.

Little did I know that in fact: (i) Drucker didn't say it, (ii) Deming didn't say it, (iii) Deming said something similar, but meant something completely the opposite.

The actual quote, by Deming, is, "It is wrong to suppose that if you can’t measure it, you can't manage it—a costly myth".

I'm sure there are multiple constructive takeaways here, but what I want to know is who the !@#$% is responsible for twisting this into its current meaning?!