Which of the following are important mantras that help explain why effective measurement is so important to lean six sigma implementation?

If you can$$t measure it$,$ you can$$t manage it; Only time will tell

What gets measured gets done; If you can$$t measure it$,$ you can$$t manage it

What gets measured gets done; Only time will tell

Measure thrice, cut twice; If you can$$t measure it$,$ you can$$t manage it